AsyncAPI Event-Driven Specifications
Browse 443 event-driven specifications across the APIs.io network
1Forge Forex Stream API
1Forge streams real-time forex and cryptocurrency price updates over a single WebSocket connection at `wss://sockets.1forge.com/socket`. Messages are pipe-delimited text frames: `{action}|{body}`, ...
Ably Realtime Protocol
AsyncAPI 3.0 description of the Ably realtime messaging surface. Ably exposes pub/sub channels, presence, push notifications, and history over a native WebSocket-based protocol, with additional acc...
ActiveCampaign Webhooks
AsyncAPI description of ActiveCampaign's outbound webhook surface. When a webhook is configured (via the dashboard or the REST API at POST /api/3/webhooks), ActiveCampaign delivers events as HTTP P...
Adobe Analytics Livestream API
The Adobe Analytics Livestream API delivers real-time analytics hit data to a connected client as each hit is processed by Adobe Analytics servers. Data is streamed in line-delimited JSON format co...
Adobe Campaign Transactional Messaging Events
Event-driven transactional messaging system for Adobe Campaign. Supports triggering personalized messages across email, SMS, and push notification channels in response to real-time customer events....
Adobe Learning Manager Webhooks API
The Adobe Learning Manager Webhooks API enables real-time event notifications for learning management activities. When configured, Adobe Learning Manager sends HTTP POST requests to registered webh...
Adobe I/O Events
Adobe I/O Events enables developers to receive near-real-time notifications from Adobe services via webhooks and journal polling. Events are emitted when significant changes occur across Adobe Expe...
Adobe Photoshop API Webhook Events
Event-driven notifications for Adobe Photoshop API asynchronous job processing. When registered through Adobe I/O Events, webhooks deliver real-time notifications when Photoshop API jobs complete o...
Adyen Webhooks (Standard Notifications and Platforms)
AsyncAPI description of Adyen's webhook surface. Adyen pushes event-driven messages to a customer-defined HTTPS endpoint using HTTP POST. This document models two webhook surfaces: * Standard Notif...
Affirm Webhooks
Affirm uses webhooks to notify merchant endpoints in real time when events occur during the customer checkout and prequalification flows. Webhooks are available to Key and Enterprise merchants. Aff...
AI21 Studio Streaming API
AsyncAPI description of AI21 Labs' documented streaming surface. The AI21 Studio Jamba chat completions endpoint streams partial responses over HTTP using Server-Sent Events (SSE) when the `stream`...
Airbnb Webhooks API
The Airbnb Webhooks API enables connectivity partners to receive real-time notifications when events occur on the Airbnb platform. It supports webhook subscriptions for reservation changes, message...
Aircall Webhooks
AsyncAPI description of Aircall's outbound webhook surface. Aircall delivers event notifications by issuing HTTP POST requests with a JSON body to a subscriber `url` that is registered through the ...
Airtable Webhooks API
The Airtable Webhooks API delivers lightweight change notifications to a subscriber's notification URL whenever data within a base or table changes. Airtable sends a small "ping" via HTTP POST iden...
Alchemy WebSocket Subscription API
AsyncAPI definition for Alchemy's JSON-RPC WebSocket subscription API. Clients open a `wss://` connection to a per-network Alchemy endpoint and use the standard Ethereum `eth_subscribe` / `eth_unsu...
Alpaca WebSocket Streaming APIs
AsyncAPI 2.6 description of Alpaca's public WebSocket streaming APIs. Covers real-time stock market data (IEX / SIP / delayed SIP / BOATS), real-time crypto market data (US and Global), real-time n...
Amazon EventBridge Event Delivery
Amazon EventBridge delivers events from event sources to targets based on rules you define. This AsyncAPI specification documents the event channels and message schemas for events delivered by Even...
Amazon Kinesis Data Streams
Amazon Kinesis Data Streams is a massively scalable and durable real-time data streaming service. This AsyncAPI specification describes the event-driven consumer patterns for Kinesis Data Streams, ...
Amazon SNS Notifications
Amazon Simple Notification Service (SNS) delivers notifications to subscribed endpoints when messages are published to topics. This AsyncAPI specification describes the notification messages that S...
Amazon Simple Queue Service (SQS) Event Source Mapping
AsyncAPI specification for Amazon SQS event-driven messaging patterns. Amazon SQS provides reliable, highly-scalable hosted queues for storing messages as they travel between applications or micros...
Amdocs connectX BSS Event API
The Amdocs connectX BSS Event API delivers real-time event notifications for telecom BSS operations including customer lifecycle events, subscription changes, billing events, and provisioning statu...
Amplitude Webhooks and Cohort Sync
AsyncAPI description of two outbound, push-style surfaces offered by Amplitude's Data destination catalog: 1. Webhooks Streaming destination - a generic event/user forwarding destination that deliv...
AMQP Messaging API
AsyncAPI specification for AMQP (Advanced Message Queuing Protocol) messaging patterns including publish/subscribe, request/reply, and point-to-point messaging. AMQP 0-9-1 defines exchanges, queues...
Ankr RPC Service — WebSocket Subscriptions
AsyncAPI description of Ankr's WebSocket JSON-RPC surface for blockchain subscriptions. Ankr exposes a single multichain WSS endpoint at `wss://rpc.ankr.com/{chain_slug}/{apiKey}` for every chain i...
Anthropic Claude Messages Streaming API
AsyncAPI specification modeling the Server-Sent Events (SSE) stream produced by Anthropic's Claude Messages API when `"stream": true` is set on a POST to `/v1/messages`. Transport: HTTP/1.1 with `C...
Anthropic Messages Streaming API
AsyncAPI specification modeling the Server-Sent Events (SSE) stream produced by Anthropic's Messages API when `"stream": true` is set on a POST to `/v1/messages`. Transport: HTTP/1.1 with `Content-...
Apache CouchDB _changes Feed
AsyncAPI 2.6 description of the Apache CouchDB database `_changes` feed. CouchDB exposes a per-database, append-only stream of document mutations at `GET /{db}/_changes` (and `POST /{db}/_changes` ...
Apache EventMesh Messaging API
Apache EventMesh provides event-driven messaging via multiple protocols including TCP, HTTP, and gRPC. Events follow the CloudEvents specification. EventMesh decouples event producers and consumers...
Apache Kafka Messaging API
Apache Kafka is a distributed event streaming platform capable of handling trillions of events a day. This spec describes the core messaging protocol for producing and consuming records to/from Kaf...
Apache Pulsar Messaging API
Apache Pulsar is a cloud-native, multi-tenant, high-performance messaging and streaming platform. This spec describes the messaging patterns for producing and consuming messages on Pulsar topics wi...
Appwrite Realtime API
AsyncAPI specification for the Appwrite Realtime WebSocket API. Appwrite Realtime lets clients subscribe to channels and receive callbacks whenever a subscribed resource changes. Subscriptions are ...
Arbitrum Public WebSocket APIs
AsyncAPI description of the WebSocket surface that Arbitrum exposes from publicly documented endpoints. ## Important scope notes (from Arbitrum docs) Arbitrum's public RPC endpoints — `arb1.arbitru...
Argo Events
Argo Events is a Kubernetes-native event-driven automation framework that listens to over 20 event sources and triggers Argo Workflows, Kubernetes objects, HTTP requests, and other actions in respo...
Arkham Intelligence Transfers WebSocket API
Real-time streaming of blockchain transfers from Arkham Intelligence. Clients subscribe with filter payloads (from, to, chains, tokens, usdGte) and receive matching transfer events as they are obse...
Asana Webhooks Events API
The Asana Webhooks Events API delivers real-time event notifications to your application when changes occur on Asana resources. Webhooks use HTTP POST to deliver events to a target URL you configur...
AssemblyAI Universal Streaming Speech-to-Text API
AsyncAPI specification for the AssemblyAI Universal Streaming Speech-to-Text WebSocket API (v3). Clients open a WebSocket to `wss://streaming.assemblyai.com/v3/ws`, send raw binary PCM audio frames...
AT Protocol Firehose & Event Streams
AsyncAPI definition for the AT Protocol event subscription surface. AT Protocol defines streaming endpoints as Lexicon "subscription" types, served over WebSocket using length-prefixed binary frame...
athenahealth FHIR Subscriptions Events
Event-driven notifications from the athenahealth Event Subscription Platform. Delivered as FHIR Bundle notifications (R5 Backport) over rest-hook channel with id-only payloads. Subscriber webhooks ...
Auth0 Log Streams and Actions Event Delivery
AsyncAPI 2.6 description of Auth0's two primary outbound event-delivery surfaces: 1. Log Streams — Custom Webhook (HTTP) destination Auth0 streams tenant log events to a customer-hosted HTTPS endpo...
Autodesk Construction Cloud Webhooks
Autodesk Construction Cloud (ACC) and APS Webhooks deliver event notifications for project activities including issue creation, document updates, RFI changes, submittal status changes, and model co...
Avalara CertCapture AWS SQS Notifications
AsyncAPI description of the Avalara CertCapture event surface. CertCapture does not publish HTTP webhooks; instead, Avalara provisions a unique per-client AWS SQS queue and publishes change-notific...
Amazon API Gateway WebSocket API Protocol
AsyncAPI description of the *platform protocol* exposed by Amazon API Gateway WebSocket APIs. Customer-deployed WebSocket APIs are message-routed based on a route selection expression evaluated aga...
AWS Lambda Event Triggers
AWS Lambda integrates with other AWS services to invoke functions in response to events. Lambda functions can be triggered by event sources including Amazon S3, Amazon DynamoDB Streams, Amazon Kine...
Axiom Custom Webhook Notifier
Axiom delivers monitor-triggered alerts to user-configured HTTP endpoints via the Custom Webhook Notifier. A monitor (match, threshold, or anomaly) runs a periodic query over event data, and when i...
Azure DevOps Service Hooks (Webhooks)
Azure DevOps Service Hooks deliver event notifications for work item changes, build completions, pull request events, code pushes, and release deployments. Service hooks are configured in Azure Dev...
Azure OpenAI Service - Streaming and Realtime APIs
AsyncAPI 2.6 description of the asynchronous and streaming surfaces of the Azure OpenAI Service (part of Microsoft Foundry Models): * The **Realtime API** over a WebSocket connection used for low-l...
Azure Service Bus Messaging
Azure Service Bus is a fully managed enterprise message broker with message queues and publish-subscribe topics. This AsyncAPI spec describes the messaging patterns for sending and receiving messag...
Backpack Exchange WebSocket Streams API
Real-time market data and account event streams for Backpack Exchange. Clients connect to a single WebSocket endpoint and manage many streams over that connection by sending `SUBSCRIBE` / `UNSUBSCR...
Backstage Events System
The Backstage Events system provides a publish-subscribe mechanism for broadcasting and consuming events within a Backstage instance. It enables plugins to emit events when significant actions occu...
Bandwidth Messaging Events
Bandwidth Messaging API sends webhooks to your application for real-time message delivery notifications and inbound message alerts. Callbacks are sent via HTTP POST to the callback URL configured o...
Bandwidth Voice Events
Bandwidth Voice API sends webhooks (BXML callbacks) to your application for real-time call event notifications. These webhooks inform your application of call state changes and request BXML instruc...
Basecamp Webhook Events
The Basecamp webhook system delivers real-time HTTP notifications to registered HTTPS endpoints when events occur within a Basecamp project. Webhooks are configured per project with a payload URL a...
beehiiv Webhooks
AsyncAPI 2.6 description of the beehiiv outbound webhook surface. beehiiv posts JSON event payloads to a customer-configured endpoint URL when selected events occur on a publication. The set of eve...
BigCommerce Webhooks
AsyncAPI description of BigCommerce's outbound webhook surface. BigCommerce delivers near real-time event notifications by issuing HTTP POST requests with a JSON body to a customer-configured desti...
BILL Webhooks
Outbound webhook event notifications delivered by the BILL v3 API Platform to subscriber `notificationUrl` endpoints. Subscribers register through the BILL v3 webhook subscription endpoints; BILL P...
Binance Pay Webhooks
Binance Pay sends webhook notifications to merchants for real-time payment status updates. When a customer completes a payment or a refund is processed, Binance Pay sends an HTTPS POST request to t...
Binance Spot WebSocket API
The Binance Spot WebSocket API provides an alternative way to access spot trading functionality through persistent WebSocket connections. It is functionally equivalent to the REST API, accepting th...
Binance Spot WebSocket Streams
Binance Spot WebSocket Streams deliver real-time market data updates via persistent WebSocket connections. Developers can subscribe to individual symbol ticker streams, aggregate trade streams, kli...
Bitbucket Cloud Webhook Events
Bitbucket Cloud webhooks deliver event payloads to a subscriber URL via HTTP POST whenever a configured event occurs in a repository or workspace. Each event request includes an X-Event-Key header ...
Bitfinex WebSocket API v2
AsyncAPI description of the Bitfinex public and authenticated WebSocket v2 API. The Bitfinex WebSocket API streams real-time market data and authenticated account information using a compact array-...
BitMEX Realtime WebSocket API
AsyncAPI 2.6 specification for the BitMEX public Realtime WebSocket API. BitMEX exposes a single WebSocket endpoint at `wss://ws.bitmex.com/realtime`. Clients subscribe to one or more topics ("tabl...
Bitquery Streaming GraphQL Subscriptions
AsyncAPI description of Bitquery's real-time blockchain data streams, delivered as GraphQL subscriptions over WebSocket. The same V2 GraphQL schema served from the HTTP endpoint (`https://streaming...
Bitso WebSocket API
Bitso's public real-time WebSocket feed for the Bitso cryptocurrency exchange. Clients connect to a single endpoint and subscribe to one or more channels per order book (e.g. btc_mxn). Three public...
Blockchain.com WebSocket APIs
Real-time WebSocket APIs published by Blockchain.com covering two distinct surfaces: 1. Bitcoin / blockchain.info Explorer WebSocket — subscribe to unconfirmed transactions, new blocks, address act...
Bluesky / AT Protocol Event Streams
AsyncAPI definition for the public event streams of the Bluesky network and the underlying AT Protocol. Three streams are documented: * **`com.atproto.sync.subscribeRepos`** - the primary repositor...
Boomi Event Streams
Boomi Event Streams provides a publish-subscribe messaging system within the Boomi Enterprise Platform. Topics act as channels where producers publish messages and consumers receive them via Boomi ...
Braintree Webhooks
Braintree Webhooks deliver automated HTTP POST notifications to a merchant-configured destination URL when specific events occur within the payment gateway. Webhook notifications are triggered by t...
Brevo Webhook Events
Brevo delivers real-time event notifications via webhooks for transactional emails, marketing campaigns, transactional SMS, and conversations. When configured, Brevo sends HTTP POST requests to you...
Brex Webhooks API
AsyncAPI 2.6 description of the Brex Webhooks surface. Brex uses webhooks to deliver real-time notifications when events happen in the accounts that you manage. Subscribers register an HTTPS callba...
Bringg Webhooks
Bringg sends server-to-server webhook callbacks to subscriber URLs when events occur on orders, drivers, runs, customers, and waypoints. Bringg retries failed deliveries three times before recordin...
Bugsnag Webhook Events
Bugsnag webhooks deliver real-time notifications about error events to a configured callback URL via HTTP POST. The webhook integration sends JSON payloads containing information about the triggeri...
Buildxact Webhooks
Buildxact webhook delivery channel. Subscribers register a target URL inside the Buildxact web app ("My Business > API"), pick the events they want, and verify each payload with a signing secret. S...
Bunny.net Stream Webhooks
AsyncAPI definition of the Bunny Stream webhook surface. Bunny Stream sends a signed HTTP POST callback to the `WebhookUrl` configured on a Video Library whenever the state of a video changes (uplo...
Bybit V5 WebSocket API
AsyncAPI definition for the Bybit V5 WebSocket API. Bybit exposes five public WebSocket endpoints split by product (spot, linear, inverse, option, spread) plus a single authenticated private endpoi...
Cal.com Webhooks
AsyncAPI definition for Cal.com's webhook surface. Cal.com webhooks are HTTP POST deliveries from Cal.com to a developer-defined `subscriberUrl` registered via the Cal.com Webhooks API (`/v2/webhoo...
Calendly Webhook Events
The Calendly Webhook API enables developers to receive real-time notifications when scheduling events occur in Calendly. By creating webhook subscriptions, applications can automatically receive da...
Capital.com WebSocket Streaming API
Real-time streaming API from Capital.com for market data and OHLC candlestick updates. Clients connect over WebSocket using session tokens (CST and X-SECURITY-TOKEN) obtained from the Capital.com R...
CargoSmart Shipment Events API
The CargoSmart Shipment Events API delivers real-time event notifications for container movements, shipment milestones, and vessel arrivals/departures via webhooks or server-sent events. Subscribe ...
Fortellis Event Relay Data API
Provides an Event Source (Publisher) the ability to post event through Fortellis Event Relay.
Celigo integrator.io Webhook Listeners
AsyncAPI description of Celigo integrator.io's inbound webhook surface. integrator.io exposes "webhook listeners" that receive HTTP POST or PUT requests from third-party source applications. Each l...
Chainstack RPC WebSocket APIs
AsyncAPI 2.6 specification for Chainstack's JSON-RPC WebSocket (WSS) subscription APIs. Chainstack-managed nodes expose a persistent WebSocket endpoint per node that accepts JSON-RPC 2.0 messages. ...
Chargebee Webhooks
AsyncAPI description of Chargebee's webhook (event) surface. When a notable change occurs on a Chargebee site (customer created, subscription cancelled, invoice generated, payment failed, etc.) Cha...
Cilium Hubble Events
The Hubble event streaming API provides real-time observability into network flows, DNS queries, HTTP requests, and service-to-service communication within Kubernetes clusters. Hubble exposes gRPC-...
Circle Webhook Notifications
AsyncAPI description of Circle's outbound webhook (notification) surfaces. Circle delivers event notifications by POSTing a JSON body to a subscriber endpoint that is registered via product-specifi...
CircleCI Webhooks
CircleCI Webhooks allow developers to receive real-time notifications about events in their CI/CD pipelines by configuring HTTP callbacks. Webhooks can be set up through project settings or the API...
Cisco Voice Portal Call Events API
The Cisco Unified Customer Voice Portal (CVP) generates real-time events during call processing that can be consumed for monitoring, analytics, and integration purposes. CVP publishes call lifecycl...
Clerk Webhooks
AsyncAPI 2.6 specification for Clerk's webhook surface. Clerk delivers webhook events via Svix to customer-configured endpoints. Each delivery is an HTTP POST of a JSON envelope signed with three S...
ClickHouse Kafka Table Engine (Consumer-Side Streaming)
AsyncAPI description of the documented streaming surface that ClickHouse offers through the Kafka table engine. ClickHouse itself does NOT publish a public WebSocket, Server-Sent Events, or push-st...
ClickUp Webhooks Events
The ClickUp Webhooks event system delivers real-time notifications when changes occur within a ClickUp Workspace. When subscribed events happen, ClickUp sends HTTP POST requests to a registered end...
Cloud Custodian c7n-mailer Notification Events
The Cloud Custodian c7n-mailer AsyncAPI defines the event-driven notification interface used by the Cloud Custodian policy engine to deliver policy violation alerts. When a policy's notify action f...
CloudEvents HTTP Delivery
AsyncAPI definition for CloudEvents delivery over HTTP. This document describes the event-driven interface by which a CloudEvents-compatible broker pushes events to a subscriber's HTTP sink endpoin...
Cloudflare Notifications Webhooks
Cloudflare Notifications sends webhook events to configured endpoints when various alerts fire across your account. Webhooks deliver JSON payloads for events including DDoS attacks, SSL certificate...
Cloudflare Stream Webhooks
Cloudflare Stream sends webhook notifications when videos finish processing and are ready to stream, or when a video enters an error state. Webhooks can also be configured for live streaming events...
Cloudinary Notifications
AsyncAPI description of Cloudinary's outbound notification (webhook) surface. Cloudinary delivers event notifications by issuing HTTP POST requests with a JSON body to a notification URL the custom...
CockroachDB CHANGEFEED Sinks
AsyncAPI description of CockroachDB CHANGEFEED INTO sinks. CockroachDB Enterprise CHANGEFEEDs stream row-level change data to external systems. This document models the publicly documented sink tar...
Coda Automations Push API
AsyncAPI description of Coda's documented automation/webhook surface. Coda does NOT publish an outbound webhook subscription API in the public REST reference. The documented eventing surface is inb...
Codehooks Events API
Asynchronous event API for Codehooks serverless backend hooks and queue workers. Covers CRUD lifecycle hooks triggered on collection document operations and asynchronous queue worker processing for...
Cohere Streaming API
AsyncAPI definition for Cohere's HTTP+SSE streaming endpoints. Cohere's streaming responses are NOT delivered via WebSockets. They are delivered as Server-Sent Events (SSE) over plain HTTPS, return...
CoinAPI Market Data WebSocket API
Real-time cryptocurrency market data streaming over WebSocket using a Subscribe-Publish model. After establishing the WebSocket connection the client sends a `hello` (or `subscribe`) message contai...
Coinbase WebSocket APIs
AsyncAPI specification covering the two publicly documented Coinbase real-time WebSocket feeds: 1. **Coinbase Exchange (formerly Coinbase Pro) WebSocket Feed** - URL: `wss://ws-feed.exchange.coinba...
Coinbase Advanced Trade WebSocket
The Coinbase Advanced Trade WebSocket API provides real-time market data streaming including heartbeats, ticker updates, candle data, market trades, level2 order book updates, and user order status...
Coinbase Commerce Webhooks
Coinbase Commerce sends webhook events to notify your application when charges are created, confirmed, delayed, pending, failed, or resolved. Each webhook event is signed with a SHA-256 HMAC signat...
Coinbase Exchange WebSocket Feed
The Coinbase Exchange WebSocket Feed provides real-time market data for the Exchange platform. It supports multiple channels including heartbeat, ticker, level2 order book, full order feed, and use...
CoinDCX Streaming Socket.IO API
AsyncAPI 2.6 description of CoinDCX's public and authenticated streaming interface. CoinDCX exposes a Socket.IO endpoint at https://stream.coindcx.com that delivers real-time orderbook, trade, pric...
CoinGecko WebSocket API
Real-time cryptocurrency price streaming via WebSocket. ## Authentication Required To use this WebSocket, you need a CoinGecko Pro API key.
commercetools Subscriptions Events
The commercetools Subscriptions system delivers real-time change notifications and domain messages to external message queue destinations when resources are created, updated, or deleted within a Co...
Conductor Events API
Asynchronous event API for Conductor workflow orchestration platform. Conductor emits events when workflows and tasks change state, enabling reactive event-driven architectures. Event handlers can ...
Confluence Cloud Webhooks
Asynchronous event notifications from Confluence Cloud. Webhooks allow applications to receive real-time notifications when content, spaces, or other entities are created, updated, or deleted in Co...
Contentstack Webhooks
Contentstack Webhooks provide event-driven notifications for content lifecycle events within a stack. When configured, Contentstack sends HTTP POST requests to your specified endpoint URL whenever ...
Convex Sync Protocol
AsyncAPI description of the Convex WebSocket sync protocol used between Convex client SDKs (browser/Node/React/React Native) and a Convex deployment's sync worker. The client opens a WebSocket to `...
Copper CRM Webhooks
AsyncAPI definition for the Copper CRM webhook surface. Copper webhooks are HTTP POST deliveries from Copper to a subscriber-defined `target` URL that was registered via the Copper Developer API (`...
Coralogix Streaming Surfaces
AsyncAPI description of Coralogix's publicly documented streaming and event-driven surfaces. This document covers only what Coralogix publishes in https://coralogix.com/docs/ and does not enumerate...
Courier Inbox Real-Time API
AsyncAPI definition for Courier's Inbox WebSocket service used by the Courier client SDKs (JS, React, React Native, iOS, Android, Flutter, Web Components) to receive real-time, in-app notification ...
GoldRush Streaming API
Real-time blockchain data from GoldRush (Covalent) delivered over a single WebSocket endpoint that speaks the GraphQL over WebSocket protocol (`graphql-transport-ws`, the protocol implemented by th...
CrewAI AMP Webhook Streaming
Outbound webhook events published by CrewAI AMP during crew execution. Three callback URLs can be supplied per kickoff — `taskWebhookUrl`, `stepWebhookUrl`, and `crewWebhookUrl`. AMP POSTs JSON eve...
Crisp Realtime Surface (Webhooks + RTM)
AsyncAPI description of Crisp's two realtime delivery surfaces: * **Web Hooks (v1)** — HTTP POST callbacks delivered to a subscriber URL registered on a Crisp website or Crisp plugin. Payload envel...
CryptoCompare Streaming API
AsyncAPI 2.6 description of the CryptoCompare (now CoinDesk) WebSocket streaming API. Clients open a single secure WebSocket to `wss://streamer.cryptocompare.com/v2` and multiplex any number of sub...
Cumulocity MQTT and SmartREST API
Constrained-device MQTT broker fronting the Cumulocity REST API with a CSV-based SmartREST 2.0 payload format that saves up to 80% of mobile traffic versus JSON. Supports static templates for commo...
Customer.io Reporting Webhooks
Customer.io Reporting Webhooks send real-time message activity events as JSON payloads via HTTP POST to a configured endpoint. These events include message sends, deliveries, opens, clicks, bounces...
Cyclr Webhook Events
AsyncAPI specification for Cyclr webhook events. Cyclr is an embedded iPaaS/integration platform that emits webhook notifications when key events occur within accounts, cycles, connectors, and temp...
Dapr Pub/Sub Messaging API
The Dapr Pub/Sub AsyncAPI defines the event-driven messaging interfaces for Dapr publish and subscribe operations. Applications publish events to topics and subscribe to receive events using the Cl...
DataHub Actions Framework Events
Event-driven interface for responding to real-time changes in the DataHub metadata graph. The Actions Framework consumes Metadata Change Log events and Platform Events from Kafka topics, enabling s...
Deel Webhooks
AsyncAPI definition for Deel's webhook surface. Deel webhooks are HTTP POST deliveries from Deel to a subscriber-controlled `url` registered via the Deel Webhooks API (`POST /rest/v2/webhooks`). A ...
Deepgram Speech-to-Text Streaming Events
The Deepgram Speech-to-Text streaming API provides real-time transcription of audio using a WebSocket connection. Audio data is sent as binary WebSocket messages and transcription results are retur...
Deepgram Text-to-Speech Streaming Events
The Deepgram Text-to-Speech streaming API provides real-time speech synthesis over a WebSocket connection. Text is sent as JSON messages and audio data is returned as binary WebSocket messages, ena...
Deepgram Voice Agent Events
The Deepgram Voice Agent API is an end-to-end solution that combines speech-to-text, LLM orchestration, and text-to-speech into a single real-time WebSocket API. It simplifies building conversation...
DeepL Voice API - WebSocket Streaming
WebSocket streaming API for real-time voice transcription and translation. After obtaining a streaming URL and token via the REST API (POST /v3/voice/realtime), establish a WebSocket connection to ...
DeepSeek Streaming API (HTTP + SSE)
AsyncAPI definition for the streaming surface of the DeepSeek API. DeepSeek exposes an OpenAI-compatible HTTP API. When the `stream` request parameter is set to `true`, the server upgrades the resp...
Deliveroo Webhooks
Event-driven webhook callbacks delivered by the Deliveroo Developer Portal APIs. Integrators configure HTTPS webhook URLs for Order Events, Rider Events, and Menu (upload result) events. Each deliv...
Dev.to Webhooks Events
The Dev.to Webhooks event-driven interface allows applications to receive real-time HTTP POST callbacks when specific events occur on the Dev.to platform. Webhook subscriptions are managed via the ...
Discord Gateway API
The Discord Gateway API provides persistent, stateful WebSocket connections between your client and Discord servers. These connections are used for sending and receiving real-time events your clien...
Discord Voice API
The Discord Voice API provides the protocol for establishing and managing voice connections between clients and Discord voice servers. It handles UDP-based voice data transmission, encryption with ...
DocuSign Connect Webhooks
DocuSign Connect is a webhook notification service that sends real-time updates about envelope and recipient events to your application. Connect pushes notifications to your listener endpoint when ...
DoorDash Drive Delivery Webhooks
DoorDash Drive sends webhook notifications for delivery status updates, enabling near-real-time information flow from DoorDash and Dashers to partner applications. Webhooks support scenarios like m...
DoorDash Marketplace Webhooks
DoorDash Marketplace sends webhook notifications for order events, menu processing status, delivery status updates, and store onboarding events. Each environment (Sandbox and Production) supports o...
DoorDash Reporting Webhooks
DoorDash Reporting API sends webhook notifications when report generation is complete and the report is ready for download. Partners configure a webhook endpoint to receive these notifications inst...
DreamFactory System API Events
Asynchronous event model for the DreamFactory System API. DreamFactory provides a comprehensive event scripting system that fires events before and after every API call, allowing server-side script...
Dropbox Sign Events and Callbacks
AsyncAPI description of the Dropbox Sign (formerly HelloSign) outbound event / callback surface. Dropbox Sign delivers event notifications by issuing HTTP POST requests to a subscriber-configured U...
dYdX v4 Indexer WebSocket API
AsyncAPI definition for the dYdX v4 Indexer WebSocket API. The Indexer exposes a single WebSocket endpoint that multiplexes subscriptions across several named channels (markets, trades, orderbook, ...
Amazon DynamoDB Streams
Amazon DynamoDB Streams captures a time-ordered sequence of item-level modifications in any DynamoDB table and stores this information in a log for up to 24 hours. Applications can access this log ...
Dynatrace Problem Notifications API
Dynatrace delivers problem lifecycle notifications to client-provided webhook endpoints via HTTP POST. When a problem is opened, updated, merged, or resolved, Dynatrace sends a notification payload...
EasyPost Webhooks API
AsyncAPI specification for EasyPost's webhook surface. EasyPost dispatches Event objects to subscriber URLs whenever asynchronous objects (batches, trackers, scan forms, refunds, reports, payments,...
EBANX Payment Notifications
EBANX sends HTTP POST callbacks to a merchant-configured Notification URL whenever a payment changes state — approved, pending, cancelled, refunded, or chargeback. Each request includes a digital s...
EigenDA Streaming Surface
Bidirectional gRPC streaming surface exposed by the EigenDA v1 Disperser. EigenDA is the data-availability service secured by EigenLayer restakers; the Disperser is the consumer-facing entry point ...
elastic.io Platform Events API
The elastic.io Platform Events API describes the asynchronous event-driven interactions of the elastic.io iPaaS platform. This includes webhook triggers that initiate integration flows when externa...
ElevenLabs Conversational AI Events
The ElevenLabs Conversational AI WebSocket API enables real-time, interactive voice conversations with AI agents. It supports bidirectional audio streaming, text events, and conversation lifecycle ...
ElevenLabs Text to Speech Streaming Events
The ElevenLabs Text to Speech WebSocket API enables bidirectional streaming for text-to-speech conversion. Clients send text chunks incrementally and receive audio chunks as they are generated, ena...
ElevenLabs Webhook Events
The ElevenLabs Webhook system delivers event notifications to configured endpoints when specific actions occur within the platform. This includes post-call webhooks from Conversational AI conversat...
Etsy Open API v3 Webhooks
AsyncAPI description of Etsy's outbound webhook surface for the Open API v3. Etsy delivers event notifications by issuing HTTP POST requests with a JSON body to a subscriber-configured callback URL...
fal Event-Driven APIs
AsyncAPI description of fal's event-driven inference surfaces. fal exposes two real-time channels in addition to its REST queue: (1) a Server-Sent Events stream that pushes incremental status updat...
Fastly Streaming, Logging, and Event Surfaces
AsyncAPI 2.6 description of the asynchronous and streaming surfaces exposed by Fastly across three documented capabilities: 1. Real-Time Analytics (rt.fastly.com) - long-polling stream of one-secon...
FastSpring Webhooks
AsyncAPI 2.6 description of FastSpring's outbound webhook surface. FastSpring delivers events to a seller-configured HTTPS endpoint as HTTP POSTs with a JSON envelope of one or more events. Each re...
Fauna Event Streaming
The Fauna Event Streaming API enables real-time change data capture by maintaining an open connection to the Fauna database and pushing events to clients as they occur. Developers can subscribe to ...
Fieldwire Webhooks
Outbound webhook events delivered by Fieldwire to subscriber `post_url` endpoints. Subscribers register through the Webhooks REST API; Fieldwire POSTs JSON payloads describing entity changes (creat...
Figma Webhooks
Figma Webhooks allow applications to receive real-time notifications when events occur in Figma files and projects. Webhooks are configured at the team level and send HTTP POST requests with JSON p...
Filevine Webhook Events
Filevine emits webhook events to subscribed callback URLs when activity occurs in the platform. Subscriptions are configured per organization and select from a curated event catalog. Each subscript...
Finnhub WebSocket API
AsyncAPI specification for Finnhub's real-time streaming WebSocket APIs. A single WebSocket endpoint (wss://ws.finnhub.io) multiplexes three documented streams selected by the envelope `type` field...
Fireworks AI Streaming Inference API
AsyncAPI description of the Fireworks AI streaming inference surface. Fireworks streams generation deltas over HTTP using Server-Sent Events (SSE) on a single `text/event-stream` response when `str...
Fiserv Payment Events
Fiserv provides webhook-based event notifications across the payments lifecycle. Merchants can subscribe to webhooks to receive real-time notifications for key events including transaction status c...
Fitbit Subscriptions Webhooks
Fitbit's Subscription API streams sync notifications to a registered Subscriber endpoint each time a user has new data available for a subscribed collection. Five collections are subscribable per u...
Flagsmith Webhook Events
Flagsmith provides two types of webhooks for receiving event notifications. Environment webhooks automatically send flag evaluations for identified users whenever an identity's flags are evaluated ...
Flowdock Streaming API
Historical streaming surface for CA Flowdock. Long-lived HTTP connection that emitted real-time message events from one or more flows. Two content types were supported: a newline-delimited JSON str...
Fluentd Forward Protocol
The Fluentd Forward Protocol is a binary MessagePack-based protocol used to transport event streams between Fluentd nodes, Fluent Bit agents, and compatible forwarders over TCP or TLS. It supports ...
Fly.io Extensions Webhook Events
The Fly.io Extensions webhook system delivers real-time event notifications in both directions between Fly.io and extension providers. Fly.io sends CloudEvents-format payloads to the provider's reg...
FreshBooks Webhooks (Callbacks API)
Best-effort AsyncAPI 2.6 description of the FreshBooks Webhooks (Callbacks API) surface. FreshBooks delivers webhook notifications as HTTP POST requests with an `application/x-www-form-urlencoded` ...
Freshdesk Webhook Events
The Freshdesk Webhook API enables real-time communication between Freshdesk and external systems by sending HTTP POST requests when specific events occur within the helpdesk. Webhooks can be trigge...
Freshworks Webhook Events
Freshworks products support webhook callbacks that notify external applications when specific events occur within the helpdesk, service desk, CRM, and messaging platforms. Webhooks are configured t...
Frontegg Webhooks
AsyncAPI 2.6 description of Frontegg's outbound webhook surface. Frontegg signs each delivery with an `x-webhook-secret` header containing the configured signing secret, and treats any 2XX HTTP res...
FullStory Webhook Events
FullStory delivers real-time webhook notifications when specific events occur within the platform. Supported event types include segment creation, segment threshold alerts, custom event processing,...
Gate.io WebSocket API V4
AsyncAPI 2.6 description of Gate.io's WebSocket API V4 covering the public Spot and Futures channels, plus the private user-data channels reached via the same WebSocket connections. Source document...
Ghost Webhooks
Ghost Webhooks allow developers to receive real-time HTTP notifications when specific events occur within a Ghost publication, such as publishing a new post, updating a page, or gaining a new membe...
GitBook Webhook Events
AsyncAPI specification for GitBook webhook events. GitBook emits webhook notifications when key events occur within organizations, spaces, pages, change requests, docs sites, collections, and user ...
GitHub Webhooks
GitHub Webhooks deliver HTTP POST payloads to a configured URL whenever specified events occur on GitHub, such as pushes, pull requests, issues, releases, and more. Webhooks can be configured at th...
GitLab Webhooks
GitLab Webhooks deliver HTTP POST payloads to a configured URL whenever specified events occur in a GitLab project or group, such as pushes, merge requests, issues, pipeline status changes, and dep...
GoCardless Webhooks
AsyncAPI description of the GoCardless webhook surface. GoCardless POSTs a JSON envelope containing one or more events (up to 250 per request) to each subscribed `webhook_endpoint`. Every request i...
Google Cloud Datastream CDC Events
Google Cloud Datastream is a serverless change data capture (CDC) and replication service that streams change events from supported source databases and applications into Google Cloud destinations....
Google Cloud Pub/Sub Messaging Surface
Google Cloud Pub/Sub is a fully managed, real-time messaging service for sending and receiving messages between independent applications. This AsyncAPI document describes Pub/Sub's event-driven sur...
Google Gemini Streaming and Live API
AsyncAPI specification describing Google Gemini's real-time and streaming surface area: * The Live API bidirectional WebSocket service (BidiGenerateContent) used for low-latency multimodal voice, v...
Google Cloud Pub/Sub
Google Cloud Pub/Sub is a fully managed real-time messaging service that allows you to send and receive messages between independent applications. This AsyncAPI spec describes the event-driven mess...
Gorgias Webhooks (HTTP Integrations)
Best-effort AsyncAPI 2.6 description of the Gorgias webhook surface, delivered through Gorgias HTTP Integrations. When the configured triggers fire inside a Gorgias account, Gorgias performs an HTT...
GoToWebinar Webhook Events
Outbound webhook events delivered by the GoToWebinar webhook infrastructure to a developer-supplied callback URL. All events are HTTP POSTs signed via the `X-Webhook-Signature` header so receivers ...
Groove Webhooks
AsyncAPI 2.6 description of Groove's webhook surface as documented for the legacy Groove REST API v1. Groove enables customers to register webhook subscriptions through `POST https://api.groovehq.c...
Groq Chat Completions Streaming (HTTP + SSE)
AsyncAPI 2.6 description of Groq's **chat completion streaming** surface. Groq does not publish a WebSocket API. The only asynchronous / event-style transport documented at https://console.groq.com...
Grubhub Delivery Events
Event-driven interface for receiving real-time delivery status updates from Grubhub. Partners can subscribe to webhook notifications for delivery updates including driver assignment, courier locati...
Grubhub Order Events
Event-driven interface for receiving real-time order notifications from Grubhub. When a diner places an order, Grubhub monitors that order and sends notifications based on the current status. The w...
Guidewire Integration Gateway Events
Guidewire Integration Gateway AsyncAPI specification for event-driven integrations. The gateway publishes webhook events when key policy, claim, and billing lifecycle events occur in Guidewire Clou...
Hasura GraphQL Subscriptions over WebSocket
AsyncAPI definition for Hasura GraphQL Engine real-time subscriptions delivered over WebSocket at the `/v1/graphql` endpoint. Hasura supports two WebSocket subprotocols, negotiated via the `Sec-Web...
Healthie Webhooks
Best-effort AsyncAPI 2.6 description of the Healthie webhook surface. Healthie delivers webhook notifications as HTTP POST requests with an `application/json` body whenever a subscribed event occur...
Helius WebSocket APIs
AsyncAPI 2.6 description of Helius's real-time WebSocket interfaces for Solana. Coverage: * Standard Solana JSON-RPC PubSub subscriptions exposed by Helius RPC. * Helius enhanced subscriptions (tra...
Help Scout Webhooks
Help Scout publishes webhook events from the Mailbox, Beacon, Docs, and organization surfaces to subscriber-configured URLs. Each delivery is an HTTP POST containing a JSON body, an X-HelpScout-Eve...
HipChat Webhooks API
Event-driven webhook deliveries from Atlassian's discontinued HipChat platform. Every webhook POST included a `signed_request` query parameter containing a JWT that the receiver was expected to ver...
HiveMQ MQTT Broker
AsyncAPI description of the message-oriented surface of a HiveMQ enterprise MQTT broker. HiveMQ implements MQTT 3.1, MQTT 3.1.1, and MQTT 5 over plain TCP, TLS, WebSocket, and Secure WebSocket list...
Honeybadger Outbound Webhook Notifications
AsyncAPI description of the outbound webhook notifications Honeybadger delivers to subscriber URLs that have been configured via Project Settings > Alerts & Integrations. This surface covers the ge...
Honeycomb Streaming, OTLP Ingest & Trigger Webhooks
AsyncAPI description of Honeycomb's event-driven and streaming-style surfaces. Honeycomb does not publish a long-lived bidirectional streaming API (no public Kafka topic, no WebSocket, no Server-Se...
HubSpot Webhooks API
The HubSpot Webhooks API enables real-time event notifications for changes to CRM objects and conversations in a HubSpot portal. When subscribed events occur, HubSpot delivers HTTP POST requests to...
Hume AI WebSocket APIs
Consolidated AsyncAPI definition for Hume AI's two production WebSocket surfaces: - **Empathic Voice Interface (EVI)** — bidirectional speech-to-speech voice conversation at `wss://api.hume.ai/v0/e...
Huobi / HTX WebSocket API
AsyncAPI 2.6 specification for Huobi (HTX) public WebSocket Market Data API and WebSocket v2 Asset & Order subscription API. ## Envelope conventions ### Market data (v1, /ws) - Subscribe: `{ "sub":...
Hyperliquid WebSocket API
AsyncAPI 2.6 specification for the Hyperliquid public WebSocket API. Clients connect to wss://api.hyperliquid.xyz/ws (mainnet) or wss://api.hyperliquid-testnet.xyz/ws (testnet) and send subscribe /...
IBM MQ Messaging
Asynchronous messaging interface for IBM MQ, supporting point-to-point queue-based messaging and publish/subscribe topic-based messaging. Defines the channels, operations, and message formats for a...
Infor ION Events
Infor ION event framework AsyncAPI specification for event-driven integrations with Infor CloudSuite applications. The ION Event Hub publishes business events when transactions occur in Infor appli...
Infura (MetaMask Developer) WebSocket Subscription API
AsyncAPI specification for Infura's (now MetaMask Developer Services) Ethereum-compatible WebSocket JSON-RPC subscription interface. Infura now defers its Ethereum reference documentation to the Me...
Luciq Webhook Events
Luciq (formerly Instabug) webhooks deliver real-time notifications about bug reports, crash reports, and APM events to a configured callback URL via HTTP POST. The webhook integration is configured...
Instacart Connect Event Callbacks
Instacart Connect notifies retailers of order status changes and fulfillment events through webhook callbacks. Retailers configure callback endpoints to receive real-time notifications about order ...
Interactive Brokers Client Portal API WebSocket
AsyncAPI definition for the Interactive Brokers (IBKR) Client Portal Web API streaming WebSocket endpoint. The Client Portal API exposes a single WebSocket endpoint at `/v1/api/ws` over which clien...
Intercom Webhooks
AsyncAPI description of Intercom's outbound webhook surface. Intercom delivers workspace events to a single subscriber URL configured per app under the Developer Hub > Webhooks settings. Each deliv...
QuickBooks Online Webhooks
QuickBooks Online Webhooks provide near real-time notifications when data changes in a QuickBooks Online company. When an entity is created, updated, merged, deleted, or voided, Intuit sends an HTT...
Inworld AI Runtime WebSocket APIs
AsyncAPI description of Inworld AI's publicly documented runtime WebSocket surface. Inworld exposes three independent WebSocket endpoints: * **TTS streaming** — bidirectional text-to-speech synthes...
App Store Server Notifications V2
App Store Server Notifications V2 is Apple's webhook surface for in-app purchase and subscription lifecycle events. Apple POSTs a JWS-signed payload to the production and sandbox URLs registered in...
Iterable System Webhooks
Iterable system webhooks send real-time event data from an Iterable project to external systems via HTTP POST requests whenever specified events occur. System webhooks can be configured to fire on ...
Jack Henry Enterprise Event System
Real-time, pub/sub-based event system for Jack Henry platform events. Lets partners and institutions subscribe to account events, transaction events, alert events, and user-lifecycle events without...
Jira Cloud Webhooks
Jira Cloud webhooks deliver HTTP POST payloads to a configured URL whenever specified events occur in your Jira instance. Webhooks can be registered via the Jira REST API or through the Jira admini...
Jito Streaming Surfaces
Real-time streaming endpoints exposed by Jito infrastructure: the WebSocket bundle tip stream and the gRPC ShredStream for low-latency Solana shred delivery. These are the canonical out-of-band fee...
Jotform Webhooks AsyncAPI
AsyncAPI definition for Jotform's webhook surface. Jotform delivers a POST request to a configured webhook URL each time a form receives a submission. The request body is sent as multipart/form-dat...
Jumio KYX Workflow Callback
Server-to-server callback delivered by the Jumio KYX Platform once a workflow execution reaches a terminal or notable state. Jumio POSTs a JSON document to a customer-configured callback URL (set e...
Junos Telemetry Interface (JTI) Streaming
Junos Telemetry Interface provides real-time streaming telemetry from Juniper Networks devices using gRPC or UDP protocols. JTI pushes operational data from Junos devices at configured intervals, r...
Juniper Mist Webhooks
Juniper Mist delivers real-time webhook notifications for network events, device state changes, alarms, audits, and client activity. Webhooks are configured at the organization or site level throug...
Jupyter Kernel Messaging Protocol
The Jupyter Kernel Messaging Protocol defines the WebSocket-based communication between Jupyter clients (notebooks, consoles) and computational kernels. Messages are exchanged over WebSocket channe...
Apache Kafka
Generic AsyncAPI 2.6 reference template for Apache Kafka. Apache Kafka is a distributed event streaming platform where producers publish records to topics partitioned across a cluster of brokers, a...
Kalshi WebSocket Streaming API
Real-time WebSocket streaming feed for the Kalshi CFTC-regulated event contracts exchange. Publishes orderbook updates, public trades, market tickers, user orders, user fills, market positions, mar...
Keap REST Hooks
AsyncAPI 2.6 description of the Keap (formerly Infusionsoft) REST Hooks webhook surface. Keap REST Hooks are subscriptions that are created and managed via the v1 REST API (`POST /rest/v1/hooks`). ...
KEDA CloudEvent Source
KEDA emits CloudEvents to configured HTTP or Azure Event Grid destinations when scaling events occur. The CloudEventSource and ClusterCloudEventSource custom resources define the destination endpoi...
Kimi (Moonshot AI) Streaming Chat Completions API
AsyncAPI definition for Moonshot AI's Kimi `POST /v1/chat/completions` streaming response channel. Moonshot's chat completions surface is OpenAI-compatible. When the request body sets `"stream": tr...
Kit Webhooks
AsyncAPI 2.6 description of the Kit (formerly ConvertKit) webhook surface. Kit delivers webhook notifications via HTTP `POST` requests with a JSON body to a `target_url` registered through the Kit ...
Klarna Push Notifications
AsyncAPI 2.6 description of Klarna's outbound HTTP push surface — the set of server-to-server callbacks that Klarna issues to merchant-hosted endpoints when payment, checkout, and order lifecycle e...
Klaviyo Webhooks
AsyncAPI 2.6 description of Klaviyo's system webhook surface. Klaviyo delivers webhook events to subscriber URLs configured via the Webhooks API (POST /api/webhooks). Each delivery is an HTTP POST ...
Knative Eventing CloudEvents
Knative Eventing uses HTTP POST requests conforming to the CloudEvents specification to deliver events between event sources, Brokers, Triggers, Channels, and Subscriptions. Events can carry struct...
Knock Outbound Webhooks
Knock fires outbound webhook events for message lifecycle (sent, delivered, seen, read, interacted, archived, link_clicked, bounced, undelivered) and for environment changes (workflow / email_layou...
Knock Real-Time In-App Feed (Phoenix Channels)
AsyncAPI specification for Knock's real-time in-app notification feed transport. Knock exposes a Phoenix Channels WebSocket that pushes feed updates to subscribed clients. The connection is initiat...
Kraken Spot WebSocket API v2
Public WebSocket API for the Kraken cryptocurrency exchange (Spot v2). Provides real-time market data through subscribe/unsubscribe semantics over JSON. Channels documented here are restricted to t...
Kubernetes Operators Watch Events
The Kubernetes Operators watch API provides streaming event notifications for operator-related resources including CustomResourceDefinitions, OLM resources (CatalogSources, Subscriptions, InstallPl...
Kubernetes Services Watch Events
The Kubernetes Services watch API provides streaming event notifications for networking resources including Services, Ingresses, EndpointSlices, NetworkPolicies, and Gateway API resources. Clients ...
Kubernetes Watch Events
The Kubernetes Watch API provides a streaming event interface for receiving real-time notifications about changes to cluster resources. Clients subscribe to resource types and receive a stream of A...
KuCoin Public WebSocket API
AsyncAPI 2.6 description of KuCoin's public WebSocket streaming API for the Classic (Spot/Margin) account. ## Obtaining the connection endpoint The WebSocket endpoint and a short-lived bearer token...
Kustomer Outbound Webhook Events
Kustomer's outbound webhook surface delivers event notifications when resources in a Kustomer organization are created or updated. Apps subscribe to a configured array of event names in their app d...
Lambda Inference API Chat Completions Streaming (HTTP + SSE)
AsyncAPI 2.6 description of the Lambda (formerly Lambda Labs) **Inference API** chat completion streaming surface. The Lambda Inference API is an OpenAI-compatible REST gateway hosted at `https://a...
LaunchDarkly Webhooks Events
LaunchDarkly sends webhook notifications as HTTP POST requests when changes occur within the platform. The webhook payload format is identical to audit log entries and includes details about what c...
Leonardo.AI Webhook Callbacks
AsyncAPI description of Leonardo.AI's outbound webhook callback surface. Leonardo delivers asynchronous job-completion notifications to a customer- hosted HTTPS endpoint that is configured per Prod...
Lichess Streaming API
AsyncAPI description of Lichess's streaming surface. Lichess does NOT expose its public real-time API over WebSocket; instead, streams are delivered over plain HTTPS using chunked transfer encoding...
LINE Messaging Webhook Event Surface
AsyncAPI description of the webhook event surface published by the LINE Messaging API to bot servers. The Messaging API delivers webhook events as HTTPS POST requests to the configured webhook URL ...
Linear Webhooks API
Linear webhooks deliver HTTP push notifications whenever data is created, updated, or removed. Webhooks are organization-scoped and can be configured for all public teams or a single team, enabling...
LiveKit Signaling Protocol
AsyncAPI description of LiveKit's signaling WebSocket protocol. LiveKit clients connect to a LiveKit server (Cloud or self-hosted) over a WebSocket at the `/rtc` endpoint. Once connected, the clien...
LogRocket Galileo Highlights Webhook
The LogRocket Galileo Highlights webhook delivers AI-generated session highlights to a customer-specified URL when processing completes. When a highlights request includes a webhookURL parameter, L...
Luma Dream Machine API Callback
Server-to-server callback delivered by the Luma Dream Machine API when an asynchronous generation transitions between states. Luma POSTs a JSON document carrying the `Generation` object to a custom...
Adobe Commerce Eventing
Adobe Commerce Eventing provides an asynchronous event-driven integration framework that publishes Commerce business events to Adobe I/O Events, enabling App Builder applications and other Adobe Ex...
Adobe Commerce Webhooks
Adobe Commerce Webhooks enable developers to configure synchronous HTTP callbacks that fire when specific events occur within a Commerce instance, allowing external systems to react in real time to...
MailerLite Webhooks
AsyncAPI 2.6 description of MailerLite's outbound webhook surface. MailerLite delivers event notifications by issuing HTTP POST requests with a JSON body to a callback URL the customer registers th...
Mango Markets v4 Feeds API
AsyncAPI definition for the two public Mango Markets v4 WebSocket feed services operated by Blockworks Foundation: the Fills Feed (service-mango-fills) and the Orderbook Feed (service-mango-orderbo...
Mantle Network WebSocket JSON-RPC
AsyncAPI description of the Mantle Network WebSocket JSON-RPC interface. Mantle is an EVM-compatible Ethereum Layer 2 built on a modified OP Stack with EigenDA for data availability. Its WebSocket ...
Marketo Engage Events
AsyncAPI 2.6 description of the two event-shaped surfaces Marketo Engage (Adobe) exposes to integrators: 1. Outbound Webhooks fired from Smart Campaign "Call Webhook" flow steps. Marketo issues an ...
Marqeta Webhooks
Marqeta delivers real-time event notifications to a developer-configured HTTPS endpoint when specific events occur within a card program. Each program supports up to five active webhook configurati...
Mastodon Streaming and Web Push API
AsyncAPI 2.6 description of the Mastodon real-time surface. Mastodon exposes two complementary asynchronous interfaces: * Streaming API - delivers timeline and notification events to a connected cl...
Materialize Streaming Sources and Sinks
AsyncAPI description of Materialize's streaming integration surface. Materialize is an operational data warehouse that ingests events from external message brokers and HTTP webhooks (sources) and e...
Matrix Client-Server Sync API
AsyncAPI description of the Matrix Client-Server sync mechanism. Matrix delivers real-time events to clients through the `/_matrix/client/v3/sync` endpoint, which is a long-lived HTTPS GET request ...
Mattermost WebSocket API
Mattermost's WebSocket API delivers real-time events from a Mattermost server to authenticated clients and accepts a small set of WebSocket actions for client-to-server interaction. A client opens ...
Mercado Pago Webhooks (IPN / Webhooks v2)
Mercado Pago webhook notifications for payments, refunds, chargebacks, merchant orders, subscriptions, and POS events. Webhook payloads include `x-signature` and `x-request-id` headers — receivers ...
Mercury Webhooks
AsyncAPI description of Mercury Banking's outbound webhook surface. Mercury delivers event notifications by issuing HTTP POST requests with a JSON body to a subscriber HTTPS endpoint that is regist...
MessageBird Conversations Events
The MessageBird Conversations webhook system delivers real-time notifications for conversation events across all messaging channels including SMS, WhatsApp, Facebook Messenger, Telegram, and more. ...
Azure DevOps Service Hooks AsyncAPI
AsyncAPI specification for Azure DevOps Service Hooks (webhooks and event subscriptions). Azure DevOps delivers event notifications via HTTP POST requests to subscriber endpoints when events occur ...
Azure Event Hubs Messaging API
Azure Event Hubs is a big data streaming platform and event ingestion service that can receive and process millions of events per second. This AsyncAPI specification describes the event-driven mess...
Azure Web PubSub
Azure Web PubSub is a fully managed real-time messaging service from Microsoft Azure that lets clients exchange publish/subscribe messages over WebSockets without operating WebSocket infrastructure...
Microsoft Graph Change Notifications
Microsoft Graph change notifications enable applications to receive real-time notifications when data changes occur in Microsoft Graph resources. Applications create subscriptions specifying which ...
Microsoft Outlook Change Notifications
AsyncAPI specification for Microsoft Graph change notifications (webhooks) for Outlook mail resources. Enables real-time event-driven architecture by subscribing to changes in messages, mail folder...
Midjourney Image Generation Webhooks
The Midjourney Image Generation webhook interface delivers real-time notifications about image generation job status changes. When a webhook URL is provided during job creation, Midjourney sends HT...
Mistral AI Streaming Completions API
AsyncAPI definition for Mistral AI streaming completion endpoints. Mistral is OpenAI-compatible and delivers streamed completions as Server-Sent Events (SSE) over HTTP when `stream: true` is set on...
Mixpanel Webhooks
AsyncAPI 2.6 description of Mixpanel's outbound webhook surfaces. Mixpanel delivers two distinct, documented webhook event streams to customer-hosted HTTPS endpoints: 1. Alert Webhooks (Custom Aler...
monday.com Webhooks
AsyncAPI 2.6 description of the monday.com webhook surface. monday.com webhooks deliver real-time board, item, subitem, column, and update events to a consumer-controlled HTTPS endpoint via HTTP PO...
Moonshot AI Chat Completions Streaming API
AsyncAPI 2.6 description of the Moonshot AI streaming chat completions surface. Moonshot's `/v1/chat/completions` endpoint is OpenAI-compatible and, when invoked with `stream: true`, delivers incre...
Moov Webhooks
Moov delivers real-time event notifications to your application via webhooks when state changes occur on your platform. When an event occurs, Moov sends an HTTP POST request with a JSON payload to ...
Nasdaq Cloud Data Service (NCDS) — Kafka Streams
AsyncAPI 2.6 description of the Nasdaq Cloud Data Service (NCDS) public delivery surface. NCDS delivers real-time exchange data over Apache Kafka (TLS) using SASL/OAUTHBEARER against a Keycloak `pr...
NATS Core and JetStream Messaging API
NATS provides cloud-native messaging with core pub-sub, request-reply, and queue group patterns, plus JetStream for persistent streaming with streams, consumers, key-value stores, and object stores.
Neon Auth Webhook Events
Neon Auth webhooks deliver HTTP POST requests when authentication events occur, including OTP delivery, magic link delivery, and user creation. Webhooks can be used to replace built-in email delive...
Netlify Webhooks and Build Hooks
AsyncAPI description of Netlify's asynchronous event surface. Two documented surfaces are modelled here: 1. Outgoing webhooks (deploy / form / split test notifications). Netlify issues an HTTP POST...
New Relic Streaming and Event-Driven Surfaces
Describes New Relic's documented event-driven and streaming surfaces. New Relic does not publish a customer-facing WebSocket or Server-Sent Events streaming endpoint, and the NerdGraph GraphQL API ...
HashiCorp Nomad Event Stream
The Nomad Event Stream provides a way to subscribe to Job, Allocation, Evaluation, Deployment, Node, Node Pool, and Service changes in near real time. The /v1/event/stream endpoint streams events a...
Nomba Webhook Events
The Nomba Webhooks system delivers real-time event notifications via HTTP POST callbacks when activities occur within a customer account. Events include payment successes and failures, payout compl...
Nostr Relay Protocol
AsyncAPI definition of the canonical Nostr relay-client protocol as specified by NIP-01 (basic protocol) and NIP-42 (authentication). Nostr relays expose a single WebSocket endpoint that exchanges ...
Notion Webhooks
AsyncAPI 2.6 description of the Notion webhooks surface. Notion delivers workspace events (page, database, data source, and comment changes) to a subscriber-hosted HTTPS endpoint via signed POST re...
Novita AI Streaming & Webhook API
AsyncAPI 2.6 description of the asynchronous surfaces of the Novita AI platform: 1. **Server-Sent Events (SSE) streaming** for OpenAI-compatible chat completions (`POST /openai/v1/chat/completions`...
Novu Notification Center WebSocket API
Real-time WebSocket interface used by the Novu Notification Center / Inbox (the `` React component, `@novu/react-native`, the headless `@novu/js` SDK, and any custom client). The transport is Socke...
npm Hooks Events
The npm Hooks event system delivers HTTP POST payloads to subscriber endpoints whenever changes occur in the npm registry. Hooks can be configured to watch for changes to individual packages, all p...
Nuvei Direct Merchant Notifications (DMN)
Asynchronous webhook notifications delivered from Nuvei to a merchant-configured notificationUrl when payments, payouts, refunds, voids, settles, or Control Panel events reach their final state. Pa...
OddsJam (OpticOdds) Streaming API
Real-time streaming surface for the OddsJam / OpticOdds Sports Betting API. Two delivery mechanisms are publicly documented: 1. Server-Sent Events (SSE) over long-lived HTTPS connections for odds, ...
OKX V5 WebSocket API
AsyncAPI 2.6 description of the OKX (formerly OKEx) V5 public, private, and business WebSocket APIs. OKX exposes three WebSocket endpoints, each carrying a distinct family of channels. All channels...
Olo Webhooks
Olo emits outbound HTTP webhooks to partner-registered endpoints for order lifecycle, loyalty, gift-card, tender, and marketplace status events. Each delivery includes an X-Olo-Message-Id header (a...
Onfleet Webhooks
Real-time event stream delivered as HTTPS POST callbacks from Onfleet to a URL you register via the Webhooks API. Each webhook is bound to a single triggerId; payloads share a common envelope with ...
OpenAI Realtime API
The OpenAI Realtime API provides low-latency, bidirectional, event-driven communication with multimodal models that natively support speech-to-speech, text, and audio in a single conversation. This...
OpenTelemetry Protocol (OTLP) Telemetry Events
The OpenTelemetry Protocol (OTLP) defines the event-driven telemetry export pipeline through which instrumented applications and OpenTelemetry Collectors push batches of traces, metrics, and logs t...
OpsGenie Webhook Events
OpsGenie sends webhook notifications for alert actions to configured webhook URLs. When alert events occur such as create, acknowledge, close, or delete, OpsGenie posts a JSON payload to the regist...
Optimism (OP Stack) WebSocket JSON-RPC API
AsyncAPI 2.6 description of the WebSocket JSON-RPC subscription surface exposed by op-geth — the OP Stack execution client used by OP Mainnet (chain ID 10) and OP Sepolia (chain ID 11155420). ## Pu...
Optimizely CMP Webhooks
The Optimizely Content Marketing Platform (CMP) provides webhook notifications when content events occur, such as when assets are published, tasks are completed or modified, and content items are u...
Optimizely Feature Experimentation Webhooks
Optimizely Feature Experimentation provides webhook notifications when configuration changes occur, such as datafile updates. Webhooks notify external servers of changes, eliminating the need to co...
Oracle Transactional Event Queues (TxEventQ) API
Oracle Transactional Event Queues provide Kafka-compatible event streaming and message queuing capabilities built into Oracle Database. TxEventQ enables event-driven architectures with transactiona...
Oracle Siebel CRM Event Pub/Sub
Event-driven integration framework enabling real-time communication between Oracle Siebel CRM and external systems using Apache Kafka. The Event Pub/Sub system supports publishing events from Siebe...
Orion Health Rhapsody Messaging Events
The Orion Health Rhapsody Integration Engine processes healthcare messages in real-time across connected healthcare systems. This specification describes the event-driven messaging patterns support...
PagerDuty Events
AsyncAPI description of PagerDuty's event-driven surface. Two complementary channels are modelled: 1. Outbound V3 Webhooks — PagerDuty POSTs a JSON envelope to subscriber URLs whenever a configured...
Cortex XDR Webhooks
Cortex XDR Webhooks provide real-time incident and alert notifications for security events detected across endpoints, networks, and cloud workloads. Webhooks are configured in Cortex XDR Settings >...
Cortex XSIAM Data Ingestion
Cortex XSIAM Data Ingestion provides streaming log and event ingestion endpoints for collecting security telemetry from external data sources into the XSIAM data lake. The ingestion service accepts...
Prisma Cloud CSPM Webhooks
Prisma Cloud Cloud Security Posture Management (CSPM) Webhooks deliver real-time event notifications for policy violations and security alerts across multi-cloud environments including AWS, Azure, ...
SASE Multitenant Notifications
Palo Alto Networks SASE (Secure Access Service Edge) delivers real-time notifications for security incidents, platform announcements, dataplane upgrades, and certificate expiration warnings across ...
Strata Logging Service Log Forwarding
Strata Logging Service Log Forwarding enables security operations teams to forward security logs from Palo Alto Networks next-generation firewalls, Prisma Access, and other Strata products to exter...
PandaDoc Webhook Events
The PandaDoc webhook system delivers real-time event notifications to registered subscriber endpoints when document lifecycle and platform events occur. PandaDoc sends HTTP POST requests containing...
PartyKit Realtime Protocol
AsyncAPI description of the PartyKit realtime protocol. PartyKit is a realtime backend framework (acquired by Cloudflare) that wraps Cloudflare Durable Objects with an opinionated developer experie...
Paystack Webhooks
AsyncAPI 2.6 description of Paystack's outbound webhook surface. Paystack notifies a single merchant-configured POST endpoint (the "webhook URL") whenever an event occurs against your integration. ...
Phonely Webhooks
Phonely delivers post-call event data to any HTTPS endpoint configured via the "Send Call Data" post-call action in the workflow builder. The event is delivered as an HTTP POST with a JSON body con...
Pipedrive Webhooks v2
AsyncAPI description of the Pipedrive Webhooks v2 surface. Pipedrive delivers webhook notifications as HTTP `POST` requests carrying a JSON body. A webhook subscription is identified by combining t...
Plaid Webhooks
AsyncAPI 2.6 specification for the Plaid webhook surface. Plaid delivers asynchronous notifications via HTTP POST to the URL registered on an Item (`webhook` parameter in `/link/token/create`) or c...
PlanetScale Webhook Events
PlanetScale webhooks deliver HTTP POST callbacks to a configured URL when specific events occur within a PlanetScale organization. Webhooks enable real-time notifications for database branch lifecy...
PlayAI Realtime WebSocket APIs
AsyncAPI 2.6 description of the PlayAI (formerly PlayHT) realtime WebSocket APIs. Covers the Text-to-Speech (TTS) streaming WebSocket used to synthesize audio from text in real time, and the Voice ...
Plivo Audio Streaming WebSocket API
The Plivo Audio Streaming API delivers near real-time raw audio from active Plivo voice calls to a customer-operated WebSocket server, and (when bidirectional streaming is enabled) accepts audio an...
Poloniex WebSocket API
AsyncAPI 2.6 description of the Poloniex public, private (spot) and futures (v3) WebSocket interfaces. All channels and message field names are derived from Poloniex's official Java and Python SDKs...
Polygon.io WebSocket APIs
Streaming WebSocket APIs from Polygon.io (now operating as Massive) for real-time and delayed US Stocks, Options, Forex, Crypto, Indices, and Futures market data. Clients connect to a market-specif...
Polygon WebSocket Streaming API
Polygon real-time market data WebSocket clusters. Each asset class (stocks, options, indices, forex, crypto) has its own dedicated cluster at `wss://socket.polygon.io/{cluster}`. Clients authentica...
Polymarket CLOB WebSocket API
Real-time streaming feed for Polymarket's central-limit order book (CLOB). Two channels are exposed: a public market channel that streams order book snapshots, price level updates, tick size change...
Portbase Vessel Events API
Portbase publishes real-time vessel call and cargo events via webhooks to connected port community members. Events notify subscribers of vessel status changes, customs release notifications, and co...
PostHog Webhook Destinations
PostHog's Customer Data Platform (CDP) exposes a webhook destination that sends event and person data from PostHog to any external HTTP endpoint in real time. The generic Webhook destination suppor...
Postman Webhooks
Postman Webhooks enable you to receive incoming HTTP POST requests that trigger collection runs. When an external system sends a POST request to a Postman webhook URL, the webhook triggers a collec...
Postmark Webhooks
AsyncAPI description of Postmark's outbound webhook surface. Postmark delivers event notifications by issuing HTTP POST requests with a JSON body to a URL the customer configures per server (and pe...
project44 Shipment Events API
project44 publishes real-time freight visibility events via webhooks. Events include shipment status updates, position changes, ETA revisions, and exception alerts across TL, LTL, ocean, air, and p...
Prometheus Alertmanager Webhook Events
The Prometheus Alertmanager webhook receiver sends HTTP POST requests to configured endpoints when alert groups are triggered. Each webhook payload contains a group of alerts sharing common routing...
PTC ThingWorx AlwaysOn WebSocket API
PTC ThingWorx AlwaysOn WebSocket API enables persistent bidirectional connections for industrial edge devices and remote assets. Supports real-time telemetry streaming, command and control, event n...
PubNub Realtime Streaming API
AsyncAPI description of PubNub's realtime subscribe surface — the event stream that delivers messages, signals, presence updates, file events, message-action events, and App Context (object) events...
Pusher Channels WebSocket Protocol
AsyncAPI definition of the Pusher Channels public WebSocket wire protocol (protocol version 7). Pusher Channels is a pub/sub realtime messaging service. Clients connect over WebSocket to `ws-{clust...
QuickBooks Online Webhooks
AsyncAPI 2.6 description of the QuickBooks Online (QBO) Data Services webhook surface. QuickBooks Online delivers asynchronous notifications of data-change events on the configured Intuit App by is...
QuickNode WebSocket Subscription API
AsyncAPI definition for QuickNode WebSocket subscription endpoints across Ethereum (and EVM-compatible chains) and Solana. All subscriptions use the JSON-RPC 2.0 envelope. After a successful subscr...
RabbitMQ AMQP Messaging API
RabbitMQ messaging via AMQP 0-9-1 protocol. Producers publish messages to exchanges which route them to queues based on bindings and routing keys. Consumers subscribe to queues to receive messages.
Ramp Developer API Webhooks
Event-driven surface for the Ramp Developer API. Ramp delivers webhook events to subscriber-provided HTTPS endpoints whenever state changes occur on resources such as transactions, bills, reimburse...
Razorpay Webhooks
AsyncAPI description of Razorpay's webhook surface. Razorpay POSTs JSON event payloads to a merchant-configured webhook URL whenever a subscribed event occurs (payments, orders, refunds, subscripti...
ReadMe Personalized Docs Webhook
AsyncAPI 2.6 description of ReadMe's Personalized Docs Webhook surface. The Personalized Docs Webhook is the integration that lets ReadMe inject a logged-in end user's account data into a project's...
Realtor.com Connections Plus Events
The Realtor.com Connections Plus API provides a direct connection between the Realtor.com lead delivery system and supporting CRM platforms. It enables real estate agents, brokers, and offices to r...
Realtor.com Lead Delivery Events
The Realtor.com Lead Delivery API is an end-to-end integration layer that delivers real estate leads directly from Realtor.com to third-party CRM systems. It provides faster and more secure lead de...
Red Hat Streams for Apache Kafka Bridge Events
The Red Hat Streams for Apache Kafka Bridge provides an HTTP-based interface for producing and consuming messages to and from Apache Kafka topics without requiring a native Kafka client. Deployed o...
Red Hat Hybrid Cloud Console Notifications Events
The Red Hat Hybrid Cloud Console notifications service delivers event-driven notifications when significant events occur across Insights services, including advisor recommendations, vulnerability a...
Red5 Pro WebRTC Streaming Events
AsyncAPI specification for the Red5 Pro WebRTC streaming event system, covering WebSocket signaling messages exchanged during publish and subscribe sessions. Red5 Pro WebRTC uses WebSocket connecti...
LSEG (Refinitiv) Real-Time WebSocket API
Standards-based WebSocket API providing real-time streaming market data using JSON message formats following the Open Message Model (OMM). Connects to Refinitiv Real-Time Distribution Systems (RTDS...
Refinitiv Real-Time WebSocket API
Low-latency streaming API for real-time market data using WebSocket connections. It supports the Open Message Model (OMM) and allows applications to connect directly to Refinitiv Real-Time distribu...
Regal Reporting Webhooks
Regal Reporting Webhooks deliver 40+ event types covering agent activity, call lifecycle, recordings and transcripts, AI analysis, tasks, SMS, MMS, email, voicemail, contact lifecycle, scheduling, ...
Remitian Tax Payment Events
Real-time webhook events from the Remitian Tax Payment API. These events provide status updates for tax payments as they move through initiation, validation, processing, and completion. All webhook...
Remote Webhooks
Remote emits webhook events for nearly every state change across its Companies, Employments, Contractors, Payroll, Billing, Time Off, Timesheets, Benefits, Identity Verification, and SSO surfaces. ...
Render Webhooks
AsyncAPI 2.6 description of Render's outbound webhook surface. Render delivers event notifications by issuing HTTP POST requests with a JSON body to a subscriber URL configured in the Render dashbo...
Reown / WalletConnect v2 Relay
AsyncAPI description of the Reown (formerly WalletConnect) v2 Relay WebSocket protocol. The relay is a JSON-RPC over WebSocket transport that routes end-to-end encrypted messages between paired pee...
Replicate Streaming and Webhooks API
AsyncAPI definition for Replicate's event-driven surfaces: - Server-Sent Events (SSE) stream returned for predictions where the model supports streaming output. The stream URL is published by the P...
Resend Webhooks
AsyncAPI 2.6 description of the Resend webhook surface. Resend delivers webhook events to subscriber-configured HTTPS endpoints using Svix as the underlying delivery and signing infrastructure. Eve...
Retell AI WebSocket APIs
AsyncAPI 2.6 description of Retell AI's publicly documented WebSocket surfaces. All events are sourced from the official Retell AI documentation (https://docs.retellai.com) and cover: * Custom LLM ...
Revel Webhooks
Revel Systems delivers event notifications to partner-registered HTTPS endpoints via webhooks. Each event type is delivered by HTTP POST with a JSON body. Requests carry an HMAC-SHA1 signature in t...
RingCentral Subscriptions and Event Notifications
AsyncAPI 2.6 description of the asynchronous event surface exposed by the RingCentral Subscription API. RingCentral delivers events from the RingCentral platform to subscribers via two documented t...
Rippling Partner Webhooks
Rippling Partner Applications listed in the Rippling App Shop can register a webhook URL to receive event-triggered notifications when relevant changes occur in a customer's Rippling tenant. Rippli...
Rockwell FactoryTalk Hub Real-Time Events API
Rockwell FactoryTalk Hub provides real-time industrial event streaming via webhooks and subscriptions. Events include tag value changes, alarm activations, and device connectivity notifications for...
Rollbar Webhook Events
Rollbar's webhook notification system delivers real-time event notifications to configured endpoints when errors, deployments, and other significant events occur. Webhooks are triggered based on co...
RubyGems Webhook Events
The RubyGems webhook event system delivers HTTP POST notifications when gems are pushed to RubyGems.org. Webhook subscribers receive a JSON payload containing the full gem metadata whenever a new v...
RudderStack Event Streaming API
AsyncAPI 2.6 specification describing RudderStack's event-streaming surfaces over HTTP. RudderStack ingests customer events server-side via the HTTP Tracking API (identify, track, page, screen, gro...
Runway Characters Realtime Events
The Runway Characters realtime event interface describes the WebRTC-based communication protocol for live conversational avatar sessions powered by GWM-1. Once a realtime session is created via the...
Sage Webhooks
AsyncAPI 2.6 description of the documented webhook / event surface across Sage developer products. Sage's webhook story is fragmented across product lines and only a subset of products publish a we...
Salesforce Service Cloud Streaming API
Real-time event streaming API for Salesforce Service Cloud using the Bayeux protocol over CometD. Supports PushTopic events for sObject changes, Platform Events for custom event-driven architecture...
Sanity GROQ-Powered Webhooks
AsyncAPI specification for Sanity's GROQ-powered webhook surface. Sanity delivers event-driven HTTP callbacks when documents in a Content Lake dataset are created, updated, or deleted. Subscribers ...
SAP Event Mesh Events
Event-driven messaging API for SAP Business Technology Platform supporting AMQP, MQTT, and REST protocols. Enables publish/subscribe patterns for business events across SAP and third-party applicat...
Segment Webhook Events
Segment Webhooks submit real-time user data to HTTP endpoints as POST requests. When configured as a destination, Segment forwards identify, track, page, screen, group, and alias events to up to fi...
Brevo (Sendinblue) Webhooks
AsyncAPI description of the outbound webhook surface for Brevo (formerly Sendinblue). Brevo delivers event notifications by issuing HTTP POST requests with a JSON body to a URL configured by the cu...
Sendle Tracking Webhooks
Sendle pushes parcel tracking events to a callback URL configured in the account Settings -> API page. Subscriptions are created per parcel via the Tracking API. Sendle expects 2xx responses; faile...
Sentry Integration Platform Webhooks
Sentry Integration Platform delivers webhook notifications to registered integrations when events occur in Sentry. Webhooks are sent as HTTP POST requests signed with HMAC-SHA256 using the client s...
ServiceNow Events and Notifications
ServiceNow supports outbound event-driven integrations through business rules, event management, and outbound REST messages. When records are created, updated, or deleted in ServiceNow tables, busi...
ShipBob Webhooks
AsyncAPI 2.6 specification modeling the ShipBob webhook event surface. ShipBob webhooks allow applications to subscribe to events that occur in a ShipBob merchant account (order shipments, returns,...
Shippo Webhooks
AsyncAPI 2.6 description of the Shippo Webhooks surface. Shippo delivers webhook events over HTTPS as POST requests to a subscriber-registered URL. Each delivery carries a JSON body with an envelop...
ShipStation Webhooks
AsyncAPI description of the ShipStation V1 outbound webhook surface. ShipStation delivers event notifications by issuing HTTP POST requests with a JSON body to a `target_url` that the customer regi...
Shodan Streaming API
Real-time streaming firehose of banner data collected by Shodan, delivered as newline-separated JSON or Server-Sent Events. Subscribers can consume the full firehose or filter by ASN, country, port...
Shopify Admin Webhooks
AsyncAPI 2.6 specification modeling the Shopify Admin webhook event surface. Shopify webhooks allow apps to subscribe to events that occur in a Shopify store. When a subscribed event occurs, Shopif...
Signal Server Real-Time Events
The Signal Server real-time messaging interface provides WebSocket connections for persistent, bidirectional communication between Signal clients and the server. When a client has an active WebSock...
Sinch Conversation API Webhooks
Event-driven webhooks for the Sinch Conversation API. The Conversation API delivers contact messages, delivery receipts, and various notifications through HTTP POST callbacks. Up to 5 webhooks can ...
Sinch SMS Webhooks
Event-driven webhooks for the Sinch SMS API. The SMS API delivers delivery reports and inbound messages via HTTP POST callbacks to your configured webhook URL. Delivery reports notify you of the de...
Sinch Verification Callbacks
Event-driven callbacks for the Sinch Verification API. The Verification API sends HTTP POST callbacks to your application during the verification lifecycle. These include verification request event...
Sinch Voice Callbacks
Event-driven callbacks for the Sinch Voice API. The Voice API sends HTTP POST callbacks to your application during the lifecycle of a voice call. Your application responds with SVAML (Sinch Voice A...
Sitecore CDP Stream API
The Sitecore CDP Stream API enables applications to send real-time behavioral and transactional events about users to the Sitecore Customer Data Platform. It is designed for high-throughput event i...
Slack Events API
The Slack Events API enables apps to respond to activities in Slack by subscribing to specific event types. Rather than polling for changes, apps receive HTTP POST payloads when subscribed events o...
Socure DocV Webhooks
Webhook event stream emitted by the Socure Predictive DocV service to notify the integrator of session lifecycle events. The customer registers a webhook URL when creating a DocV transaction; Socur...
Socure Global Watchlist Monitoring Webhooks
Webhook event stream emitted by the Socure Global Watchlist Monitoring service. Once a profile is enrolled for continuous monitoring, Socure POSTs alert events to the integrator's registered webhoo...
Kensho Scribe Real Time API
Real-time streaming transcription WebSocket API from Kensho Technologies (a wholly-owned S&P Global subsidiary). Companion to the Kensho Scribe v2 batch REST API. Streams uncompressed PCM audio chu...
SPAN eBus MQTT API
Publish/subscribe streaming API hosted directly on SPAN Panel using the Electrification Bus (eBus) integration framework and the Homie Convention for MQTT topic and payload structure. SPAN Panel ho...
SPIFFE Workload API Events
The SPIFFE Workload API is a gRPC streaming interface through which workloads request and receive SPIFFE Verifiable Identity Documents (SVIDs) and trust bundle updates. Workloads subscribe to the A...
SPIRE Workload API Events
The SPIRE Workload API is a gRPC streaming interface exposed by the SPIRE Agent on each node, through which workloads request and receive SPIFFE Verifiable Identity Documents (SVIDs) and trust bund...
Square Webhooks
AsyncAPI 2.6 description of the Square webhook event surface. Square delivers HTTPS POST notifications to a subscriber-provided `notification_url` whenever an event occurs on a seller's account. Ea...
Squarespace Webhook Events
The Squarespace webhook system delivers real-time event notifications to registered endpoint URLs when commerce activity occurs on a merchant site. Supported events include order creation, order up...
Starknet WebSocket RPC API
AsyncAPI 2.6 description of the Starknet WebSocket JSON-RPC API as defined by the upstream `starknet_ws_api.json` OpenRPC specification (https://github.com/starkware-libs/starknet-specs/blob/master...
DogStatsD Wire Protocol
The DogStatsD wire protocol — Datadog's StatsD-compatible ingestion format. A strict superset of vanilla StatsD that adds first-class tag syntax (`|#k:v,k:v`), histogram (`|h`) and distribution (`|...
StatsD Wire Protocol
The StatsD wire protocol: a UTF-8, line-oriented, UDP-by-default text format used by application code to push metrics to a StatsD daemon for in-memory aggregation. Each datagram contains one or mor...
Statsig Webhook Events
Statsig's webhook system provides real-time event-driven notifications for exposure events and configuration changes. Webhooks are triggered at runtime as users are assigned to gates and experiment...
Statuspage Webhook Notifications
AsyncAPI description of the webhook notifications that Atlassian Statuspage delivers to subscriber endpoints. Statuspage POSTs a JSON body to a customer-configured URL whenever a component changes ...
Storyblok Webhooks
The Storyblok Webhook system delivers real-time event notifications to registered HTTP endpoints when content events occur in a Storyblok space. Events are triggered by actions such as story public...
Strapi Webhooks
Strapi includes a built-in webhook system that notifies external services whenever certain events occur in the CMS. Rather than polling the Strapi API for changes, you can configure Strapi to send ...
Strava Webhooks API
AsyncAPI definition for Strava's Webhook Events API. Strava uses a push subscription model: an application creates a single push subscription with a callback URL and an application-defined verify_t...
Stream Chat WebSocket API
AsyncAPI description of the Stream (GetStream) Chat realtime WebSocket API. Clients connect to `wss://chat.stream-io-api.com/connect` with a JWT user token and receive a stream of JSON events. Even...
Stripe Webhooks
Stripe uses webhooks to notify your application when an event happens in your account. Webhooks are particularly useful for asynchronous events like when a customer's bank confirms a payment, a cus...
Suki Speech Service Streaming API
AsyncAPI description for the three WebSocket audio-streaming channels exposed by the Suki Speech Service (Suki for Partners). Each REST session-create call (Ambient, Dictation, Form Filling) return...
Sumo Logic Webhook Connections
AsyncAPI description of Sumo Logic's outbound webhook surfaces. Sumo Logic delivers alert and recovery notifications via HTTP POST to user-configured webhook connections. Each connection type targe...
Supabase Realtime API
The Supabase Realtime API enables real-time communication over WebSocket connections using the Phoenix Channel protocol (v2). It supports three main features: Postgres Changes for subscribing to IN...
SurveyMonkey Webhooks
AsyncAPI 2.6 description of the SurveyMonkey v3 webhook surface. SurveyMonkey delivers events as HTTP POST requests to a `subscription_url` that the consumer registers via the REST endpoint `POST /...
Syndica Solana RPC PubSub & ChainStream WebSocket API
AsyncAPI 2.6 specification for Syndica's Solana WebSocket surface. Covers two products: 1. **Solana RPC PubSub** — JSON-RPC 2.0 subscriptions served from `wss://solana-mainnet.api.syndica.io/api-ke...
Talkdesk Webhook Surface
AsyncAPI 2.6 description of Talkdesk's publicly documented outbound webhook surface. Talkdesk does not publish a single unified "Subscriptions Service" catalog of events such as call_started / call...
Teller Webhooks
AsyncAPI specification describing Teller's outbound webhook surface. Teller sends signed HTTPS POST callbacks to a developer-configured endpoint when notable events occur on enrollments and account...
Temenos Banking Events
Event-driven architecture for Temenos banking platform providing asynchronous integration through business and system events published to Apache Kafka topics. Enables loose coupling of Packaged Bus...
Tensor WebSocket API
Realtime subscription stream for the Tensor Solana NFT marketplace. Clients open a single WebSocket connection authenticated with `x-tensor-api-key`, then send JSON subscribe/unsubscribe control fr...
ThingSpeak MQTT API
ThingSpeak's MQTT broker at `mqtt3.thingspeak.com`. Devices publish channel updates and subscribe to channel/field feeds using MQTT credentials (Client ID, Username, Password) provisioned in the Th...
TIBCO Messaging API
Enterprise messaging API supporting TIBCO Enterprise Message Service (EMS) and FTL (TIBCO FTL) for reliable, high-performance messaging. Supports JMS-compatible publish-subscribe and point-to-point...
Together AI Streaming Inference API
AsyncAPI 2.6 description of Together AI's streaming (Server-Sent Events) inference surface. Together AI exposes OpenAI-compatible HTTP endpoints that upgrade to a `text/event-stream` response when ...
TradeStation Streaming API
The TradeStation Streaming API provides real-time HTTP streaming endpoints for market data and brokerage events. Streams use HTTP chunked transfer encoding with newline-delimited JSON objects. Each...
Tradier Streaming WebSocket API
AsyncAPI 2.6 description of Tradier's WebSocket streaming for market events and account events. A streaming session must first be created via the brokerage REST endpoints (POST /v1/markets/events/s...
Trello Webhooks Events
The Trello Webhooks API delivers real-time notifications when changes occur on Trello models such as boards, lists, cards, and members. Rather than polling the REST API for updates, webhooks push e...
Tripleseat Webhooks
Tripleseat webhooks POST a JSON package to a subscriber URL when a lead or booking lifecycle event occurs. Each request carries an X-Signature header computed with SHA256-HMAC using the webhook end...
Twilio Real-Time WebSocket APIs
AsyncAPI 2.6 specification for Twilio's public WebSocket APIs: - **Media Streams** — Bidirectional and one-way raw audio over WebSocket. Twilio acts as the WebSocket *client* and connects out to a ...
Twitch EventSub
EventSub is Twitch's event-driven subscription service for receiving real-time notifications about events on Twitch. Supports webhook, WebSocket, and conduit transport methods. Subscribe to events ...
Typeform Webhooks
AsyncAPI description of Typeform's webhook surface. Typeform delivers a single event type (`form_response`) via HTTP POST to a subscriber-configured HTTPS URL every time a respondent submits a type...
UiPath Orchestrator Webhook Events
The UiPath Orchestrator webhook system delivers real-time event notifications to registered HTTP endpoints when automation events occur within the platform. Webhooks cover events for jobs, robots, ...
Uniblock Webhook Events
Uniblock webhooks enable real-time notifications for blockchain events without the need to poll endpoints. By configuring webhooks through the Uniblock dashboard or API, developers can receive HTTP...
Upvest Investment Events
The Upvest Investment API uses an asynchronous, event-driven architecture where events represent state changes within the system. Webhook subscriptions allow your application to receive real-time n...
Vapi Realtime API (WebSocket Transport + Server URL Events)
AsyncAPI description of Vapi's realtime surfaces: 1. The WebSocket Transport (`wss://api.vapi.ai/{callId}/transport`) used to stream binary audio and JSON control messages to and from an active cal...
Vercel Webhooks
AsyncAPI definition for Vercel's webhook surface. Vercel webhooks are HTTP POST deliveries from Vercel to a subscriber-configured endpoint URL registered either as an Account Webhook (Team Settings...
Vonage Voice WebSocket API
AsyncAPI 2.6 description of Vonage's publicly-documented WebSocket surface. The only Vonage product whose realtime protocol is publicly specified frame-by-frame is the Voice API WebSocket endpoint:...
Wahoo Cloud Webhooks
Wahoo Cloud delivers `workout_summary` webhook events to a callback URL registered against a developer application. Webhooks require the `offline_data` OAuth scope. Failed deliveries (non-200) are ...
wasmCloud Control Interface API
AsyncAPI specification for the wasmCloud Control Interface, a NATS-based API for managing the wasmCloud lattice. Operators and tooling (wash CLI, wasmCloud dashboard, wadm) interact with wasmCloud ...
wasmCloud Lattice Events
The wasmCloud lattice event system publishes CloudEvents-format messages to NATS subjects describing the lifecycle of components, capability providers, links, and hosts within a wasmCloud lattice. ...
wasmCloud wadm Application Deployment Manager API
The wasmCloud Application Deployment Manager (wadm) API is exposed entirely as a NATS service using a subject-per-operation model. All API requests and responses are JSON-encoded and published on s...
Webflow Webhooks
AsyncAPI specification for Webflow webhook events. Webflow delivers webhook payloads via HTTP POST to a URL you register through the Webflow API. Each payload includes a signature header (`X-Webflo...
Spring WebFlux WebSocket API
AsyncAPI specification describing WebSocket communication patterns for Spring WebFlux applications. Spring WebFlux provides reactive WebSocket support via WebSocketHandler and WebSocketSession, ena...
WeChat Webhooks (Official Accounts, WeChat Pay APIv3, WeCom)
AsyncAPI description of the publicly documented WeChat (Weixin) webhook surfaces. WeChat does not expose a public WebSocket / streaming endpoint for third-party developers — its event-driven surfac...
WhatsApp Webhooks
WhatsApp Business Platform webhooks deliver real-time notifications for incoming messages, message status updates, template status changes, account updates, phone number quality changes, and securi...
Wise Platform Webhooks
AsyncAPI 2.6 description of the Wise Platform webhook surface. Wise pushes HTTP `POST` notifications to subscriber-defined HTTPS endpoints when events occur against profiles, transfers, balances, c...
Wistia Webhooks API
AsyncAPI 2.6 description of Wistia's webhook surface. Wistia delivers real-time notifications about media lifecycle events to a consumer endpoint configured in your Wistia account. All webhooks are...
Wix Webhooks
AsyncAPI specification for the documented Wix webhook surface. Wix delivers webhook events as signed JSON Web Tokens (JWTs) POSTed to subscriber URLs registered in the Wix Dev Center. The JWT body ...
WooCommerce Webhook Events
The WooCommerce webhook system delivers real-time HTTP POST event notifications to a subscriber-configured endpoint URL whenever specific store events occur. Supported topics cover create, update, ...
Workato Event Streams
Workato Event Streams provides a publish-subscribe messaging system within the Workato platform. Topics act as channels through which producers publish messages and consumers retrieve them. Event S...
Wufoo Webhooks
Wufoo webhooks POST a form-submission payload to a subscriber URL the moment an entry is created. Each form supports up to 10 active webhooks. When the subscription is created with `metadata=true`,...
xAI Realtime WebSocket APIs
AsyncAPI 2.6 description of xAI's documented WebSocket APIs: - Real-time Speech-to-Text (STT) streaming at wss://api.x.ai/v1/stt - Voice Agent (bidirectional speech-to-speech) at wss://api.x.ai/v1/...
Xero Webhooks
AsyncAPI 2.6 description of Xero's outbound webhook surface for the INVOICE and CONTACT event categories. Xero delivers event notifications by issuing HTTP POST requests with a JSON body to a singl...
Zendesk Webhooks
Zendesk Webhooks allow you to receive real-time HTTP notifications when events occur in your Zendesk account. Webhooks are the modern replacement for legacy targets and support event types for tick...
zkSync Era WebSocket JSON-RPC PubSub API
AsyncAPI description for the zkSync Era WebSocket JSON-RPC PubSub endpoint. zkSync Era is fully compatible with Geth's pubsub API, except for the `syncing` subscription. Clients open a WebSocket co...
Zoho CRM Notifications API
AsyncAPI 2.6 specification for the Zoho CRM Notifications (Instant Notifications) API surface. Subscribers register a notify_url (channel) with Zoho CRM via the REST "actions/watch" endpoint and re...
Zoom Meeting Webhooks
Zoom delivers webhook event notifications to your application when meeting-related events occur on the Zoom platform. These webhooks enable real-time integration with meeting lifecycle events inclu...
Zulip Events API
The Zulip Events API delivers real-time updates from a Zulip server to a client via an HTTPS long-poll. Clients first register an event queue by calling POST /api/v1/register, then repeatedly call ...