AsyncAPI channel · QuickNode · QuickNode WebSocket Subscription API

`ethereum/syncing`

Subscribe to node sync state changes via `eth_subscribe` with the `syncing` subscription type. Notifications are emitted when the node starts or stops syncing and with periodic progress reports.

Open source AsyncAPI → All QuickNode channels QuickNode provider profile

Provider: QuickNode AsyncAPI: v2.6.0 Spec: QuickNode WebSocket Subscription API Operations: 2 Messages: 5

Channel address

ethereum/syncing

Operations

publish

subscribeEthSyncing

Send eth_subscribe / eth_unsubscribe for syncing

receiveEthSyncing

Receive subscription id and syncing notifications

Messages

EthSubscribeSyncingRequest

Subscribe to node sync state notifications

Content-Type: application/json

EthUnsubscribeRequest

Cancel an active eth_subscribe subscription

Content-Type: application/json

EthSubscribeResponse

Returned subscription id (hex string)

Content-Type: application/json

EthUnsubscribeResponse

eth_unsubscribe response

Content-Type: application/json

EthSyncingNotification

eth_subscription syncing notification

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.

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.