AsyncAPI channel · Chainstack · Chainstack RPC WebSocket APIs

ethereum/eth_subscribe/newHeads

Subscribe to new Ethereum block headers via WebSocket. Server pushes one notification per new canonical block.

Open source AsyncAPI → All Chainstack channels Chainstack provider profile
Provider: Chainstack AsyncAPI: v2.6.0 Spec: Chainstack RPC WebSocket APIs Operations: 2 Messages: 2

Channel address

ethereum/eth_subscribe/newHeads

Operations

publish
ethereumSubscribeNewHeads
Subscribe to newHeads on Ethereum
ethereumNewHeadsNotification
Receive Ethereum newHeads notifications

Messages

ethSubscribeNewHeads
JSON-RPC 2.0 request to subscribe to new block headers.
Content-Type: application/json
ethSubscriptionNewHeads
Push notification carrying a new block header.
Content-Type: application/json

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.

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