eth_sendUserOperation | Alchemy Docs

Sends a UserOperation to the given EVM network.

Supported EntryPoints

eth_sendUserOperation supports versions v0.6 and v0.7 of ERC-4337. Check our FAQs to determine which version you should use.

Replacement Underpriced Error

You might get a "Replacement Underpriced Error" when using eth_sendUserOperation. View our FAQs for a description of this error along with resolution steps.

Path parameters

apiKeystringRequired

Request

This endpoint expects an object.

UserOperationobjectRequired

The UserOperation object. This can be either a v0.6 or v0.7 user operation, but MUST match the version of the entry point at the address of the second parameter.

Entrypoint addressstringRequiredformat: "^0x[0-9a-fA-F]{40}$"

The entrypoint address the request should be sent through. This MUST be one of the entry points returned by the supportedEntryPoints RPC call.

Response

The calculated userOpHash for the UserOperation.

1	import requests
2
3	url = "https://eth-mainnet.g.alchemy.com/v2/:apiKey"
4
5	payload = { "1": "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789" }
6	headers = {"Content-Type": "application/json"}
7
8	response = requests.post(url, json=payload, headers=headers)
9
10	print(response.json())

1	{
2	"jsonrpc": "2.0",
3	"id": "1",
4	"result": {
5	"result": "0x1234...5678"
6	}
7	}