AsyncAPI channel · PubNub · PubNub Realtime Streaming API

signal

Lightweight signals delivered to subscribers of a channel. Signals are capped at 64 bytes of payload and are intended for high-volume, low-latency use cases. Received by SDK listeners as a "signal" event.

Open source AsyncAPI → All PubNub channels PubNub provider profile
Provider: PubNub AsyncAPI: v2.6.0 Spec: PubNub Realtime Streaming API Operations: 1 Messages: 1

Channel address

signal

Operations

receiveSignal
Receive signals on a channel.

Messages

Signal
A signal event delivered to channel subscribers (payload ≤ 64 bytes).
Content-Type: application/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.

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.