AsyncAPI channel · Helius
· Helius WebSocket APIs
slotSubscribe
Subscribe to slot processing notifications.
Channel address
slotSubscribe
Operations
publish
slotSubscribe
Open a slotSubscribe subscription.
subscribe
slotNotification
Slot notifications.
Messages
slotSubscribe
slotSubscribe request
Content-Type:
application/jsonslotUnsubscribe
slotUnsubscribe request
Content-Type:
application/jsonjsonRpcResponse
Response to a subscribe / unsubscribe request — carries the subscription id (subscribe) or a boolean (unsubscribe).
Content-Type:
application/jsonslotNotification
slotNotification
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.