AsyncAPI channel · Financial Modeling Prep
· Financial Modeling Prep WebSocket API
/
Single duplex channel: send login/subscribe/unsubscribe events, receive login confirmations, quote updates, and heartbeats.
Channel address
/
Operations
send
sendLogin
Authenticate the session by sending your API key in a login event.
send
sendSubscribe
Subscribe to live price updates for tickers, or to a predefined market stream.
send
sendUnsubscribe
Stop receiving updates for a ticker or market stream.
receive
receiveQuote
Receive real-time quote updates for subscribed tickers/streams.
receive
receiveHeartbeat
Regular heartbeat events signal an active connection; use to auto-reconnect.
Messages
login
Authenticate with API key
Content-Type:
subscribe
Subscribe to tickers (tickers) or a market stream (stream)
Content-Type:
unsubscribe
Unsubscribe a ticker or market stream
Content-Type:
loginResponse
Login confirmation
Content-Type:
quote
Real-time quote update
Content-Type:
heartbeat
Connection heartbeat
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 Agent Skill and MCP server surfaces of the same providers.