sendUserOperation

Learn how to use the sendUserOperation JSON-RPC method.

POST /#eth_sendUserOperation

sendUserOperation

cURL

curl --request POST \
  --url 'https://bundler.particle.network/#eth_sendUserOperation' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 1,
  "chainId": 80001,
  "params": [
    {
      "sender": "0xSenderAddress",
      "nonce": "0x1",
      "initCode": "0xInitCode",
      "callData": "0xCallData",
      "callGasLimit": "0x5208",
      "verificationGasLimit": "0x5208",
      "maxFeePerGas": "0x3B9ACA00",
      "maxPriorityFeePerGas": "0x3B9ACA00",
      "paymasterAndData": "0xPaymasterData",
      "preVerificationGas": "0x5208",
      "signature": "0xSignature"
    }
  ]
}
'

200

{
  "jsonrpc": "2.0",
  "id": 1,
  "chainId": 80001,
  "result": "0xTransactionHash"
}

Contextualizing sendUserOperation

• sendUserOperation pushes a signed UserOperation to the network, in this case through the Particle Bundler. It takes:
  • UserOperation object.
  • entrypointAddress - string.

---

Query example

JSON

{
  "method": "eth_sendUserOperation",
  "params": [
    // user operation
    {
      "sender": "0x8Fb859E944561678be40Cdd2dB16551396c0b074",
      "nonce": "0x0150",
      "initCode": "0x",
      "callData": "0x9e5d4c49000000000000000000000000329a7f8b91ce7479035cb1b5d62ab41845830ce8000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000",
      "callGasLimit": "0xa13c",
      "verificationGasLimit": "0xe2d8",
      "maxFeePerGas": "0x7ca702cd",
      "maxPriorityFeePerGas": "0x7ca702b0",
      "paymasterAndData": "0x000031dd6d9d3a133e663660b959162870d755d4000000000000000000000000329a7f8b91ce7479035cb1b5d62ab41845830ce8000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000416665636080709b968ebec098bf71fb0e79b3b480cc9ff809f192afb478c84ec50ad2de74b93a67860542099b11a1b5dbfa9bc21a2790c58e10015ce992a02f411b00000000000000000000000000000000000000000000000000000000000000",
      "preVerificationGas": "0x011120",
      "signature": "0x7cc0a2ae350b79c5b189bd36d55ab6a2756097d6d37537e3ec2c26daaa82c6d909fed87ff9d79a6fa127bd798126259ee72fa9395ecbeb1f70ed22ca35983aea1c"
    },
    // entrypoint contract address
    "0x5ff137d4b0fdcd49dca30c7cf57e578a026d2789"
  ],
  "id": 1695717470,
  "jsonrpc": "2.0",
  "chainId": 80001
}

Body

application/json

Request to send a user operation.

jsonrpc · string · default: 2.0 · required

Version of the JSON-RPC protocol, should be 2.0.

Example:

"2.0"

id · integer · default: 1 · required

The request identifier.

Example:

1

chainId · integer · required

The chain ID.

Example:

80001

method · enum<string> · required

API method being called.

Available options: eth_sendUserOperation

params · (object | string)[] · required

Parameters for sending a user operation.

Show child attributes

Response

200 - application/json

Successful response with the result of the user operation.

jsonrpc · string · default: 2.0 · required

Version of the JSON-RPC protocol, should be 2.0.

Example:

"2.0"

id · integer · default: 1 · required

The request identifier.

Example:

1

chainId · integer · required

The chain ID.

Example:

80001

result · string · required

Transaction hash of the user operation.

Example:

"0xTransactionHash"