AsyncAPI channel · Polygon
· Polygon WebSocket Streaming API
control
Client-to-server control messages (auth, subscribe, unsubscribe).
Channel address
control
Operations
send
sendControl
Messages
Auth
Send API key to authenticate the WebSocket session.
Content-Type:
Subscribe
Subscribe To Channels
Content-Type:
Unsubscribe
Unsubscribe From Channels
Content-Type:
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.