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JSON-RPC Reference

eth_unsubscribe

WebSocket required: eth_unsubscribe is only available over a persistent WebSocket connection (wss://). Starting August 4, 2026 at 12:00 PM PST, WebSocket connections require an authenticated Conduit account — append an API key to your WSS URL; anonymous connections are rejected. It cannot be used over HTTP, and the subscription ID is only valid on the same WebSocket connection that created it via eth_subscribe.

Cancels an existing subscription by subscription ID.

⚡ Compute Units: 10 CU

Request

This endpoint expects an object.
subscriptionIdstringRequiredformat: "^0x[0-9a-fA-F]+$"

Opaque subscription ID returned by eth_subscribe.

Response

True if the subscription was successfully cancelled, otherwise false