AsyncAPI channel · Interactive Brokers
· Interactive Brokers Client Portal API WebSocket
umh+{serverId}
Unsubscribe from a historical data subscription using its server-assigned id.
Channel address
umh+{serverId}
Parameters
serverId— Server-assigned subscription id returned by the `smh` response.
Operations
publish
unsubscribeHistorical
Unsubscribe from historical bars
Messages
UnsubscribeHistorical
umh+serverId
Content-Type:
text/plainAbout 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.