eth_sendUserOperation

Please refer to 1Balance & Relay to create a sponsorApiKey.

The maxFeePerGas and paymasterAndData fields must be zero to avoid on-chain EntryPoint fee payments. This decreases overhead and leads to gas savings.

See Advantages & Highlights.

eth_sendUserOperation

Sends a UserOperation to the specified network.

post

/bundlers/{chainId}/rpc

Path parameters

chainIdnumberrequired

Target network chain identifier.

Query parameters

sponsorApiKeystringrequired

1Balance API key which covers transaction costs.

retriesnumber · default: 5

Number of times to retry failing transactions.

Body

idnumber

jsonrpcstring · default: 2.0

methodstring · default: eth_sendUserOperation

paramsone of[]

1. Object - The UserOperation object
2. String - The EntryPoint address the request should be sent through. This MUST be one of the entry points returned by the eth_supportedEntryPoints rpc call.

Responses

application/json

application/json

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --request POST \
  --url 'https://api.gelato.digital/bundlers/{chainId}/rpc?sponsorApiKey=text' \
  --header 'Content-Type: application/json' \
  --data '{"jsonrpc":"2.0","method":"eth_sendUserOperation","params":[{"paymasterAndData":"0x","preVerificationGas":"0x0","maxFeePerGas":"0x0"}]}'

200

400

200

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x13574b2256b73bdc33fb121052f64b3803161e5ec602a6dc9e56177ba387e700"
}

Successful response