AsyncAPI channel · Polygon.io
· Polygon.io WebSocket APIs
forex/CAS
Stream per-second aggregates for a forex currency pair.
Channel address
forex/CAS
Operations
subscribe
subscribeForexSecAggregates
Receive per-second forex aggregate events.
Messages
ForexAggregateSecond
Forex per-second aggregate (CAS)
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.