AsyncAPI channel · PubNub
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message
Standard published messages delivered to all subscribers of a channel. Received by SDK listeners as a "message" event.
Channel address
message
Operations
subscribe
receiveMessage
Receive published messages on a channel.
Messages
Message
A user-published message delivered to channel subscribers.
Content-Type:
application/jsonAbout 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.
Browse every event-driven channel on the APIs.io network or compare with the broader Naftiko capability, Agent Skill, and MCP server surfaces of the same providers.