eth_subscribe
Subscribes to specific event types and returns a subscription ID to receive asynchronous notifications via the `eth_subscription` method.
⚠️ **WARNING: WebSocket-Only Method** ⚠️
> This method REQUIRES a WebSocket connection using `wss://` protocol. It will NOT work with standard HTTP/HTTPS requests or `curl`.
> See the [WebSocket documentation](https://docs.alchemy.com/reference/subscription-api) for examples.
Path Parameters
apiKey
Request
This endpoint expects an object.
Subscription Type
The type of event to subscribe to (e.g., “newHeads”, “logs”, “newPendingTransactions”, “syncing”).
Options
Optional subscription parameters, such as filtering topics for logs.
Response
A unique identifier for the subscription, returned as a 32-byte hex string.
