AsyncAPI channel · Dapr · Dapr Pub/Sub Messaging API

publish

Channel for publishing events to a topic on a named pub/sub component. The Dapr sidecar wraps payloads in CloudEvents format unless raw payload mode is enabled.

Open source AsyncAPI → All Dapr channels Dapr provider profile
Provider: Dapr AsyncAPI: v2.6.0 Spec: Dapr Pub/Sub Messaging API Operations: 1 Messages: 1

Channel address

publish

Operations

publish
publishEvent
Publish Event

Messages

CloudEvent
A message conforming to the CloudEvents 1.0 specification used for all Dapr pub/sub event payloads.
Content-Type: application/cloudevents+json

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

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Tools for event channels

4 MCP tools reach this
  • find_channelsBrowse and filter every channel in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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