wallet_prepareCalls

POST

https://api.g.alchemy.com/v2/{apiKey}

This method is used to prepare a user operation for submission. It will return a built user operation and a signature request which needs to be signed by the user before submitting to wallet_sendPreparedCalls

Path Parameters

stringrequireddefaults to docs-demo

For higher throughput, create your own API key

Request

objectrequired

Responses

200

POST/v2/{apiKey}

curl --request POST \  --url https://api.g.alchemy.com/v2/docs-demo \  --header 'Content-Type: application/json' \  --data '{  "jsonrpc": "2.0",  "id": 1,  "method": "wallet_prepareCalls",  "params": [    {      "calls": [        {          "to": "0x1234567890123456789012345678901234567890",          "data": "0x"        }      ],      "from": "0xa363219d7C0b8673df17529D469Db9eFF0f35D2A",      "chainId": "0x01",      "capabilities": {        "paymasterService": {          "policyId": "11111111-2222-3333-4444-555555555555"        }      }    }  ]}'

200Success

{  "jsonrpc": "2.0",  "id": 1,  "result": {    "type": "user-operation-v070",    "data": {      "sender": "0xa363219d7C0b8673df17529D469Db9eFF0f35D2A",      "nonce": "0x10000000000000000",      "callData": "0x34fcd5be0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000200000000000000000000000001234567890123456789012345678901234567890000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000",      "paymaster": "0x3f222Df6aB18C1E10d0Ec136503c3B0dfd929048",      "paymasterData": "0x0000000000000000682d7e7c9fa6f71c28c31141a11ac9eb2bdbe898ddbd42a4f7085f8bb3380ba75dd9231a386e24fe5a84777217c907391e983b5b0f78a4a9d0fd1c8631dd22c10e106b461c",      "paymasterPostOpGasLimit": "0x0",      "paymasterVerificationGasLimit": "0x74d3",      "maxPriorityFeePerGas": "0x60e4b0",      "maxFeePerGas": "0x1bf52290",      "callGasLimit": "0x2bb8",      "verificationGasLimit": "0xc845",      "preVerificationGas": "0x14b74"    },    "chainId": "0x66eee",    "signatureRequest": {      "type": "personal_sign",      "data": {        "raw": "0xc69e468aa6fafb5c7298c02841e76f976b433018266af39a5807bc29ea9ad392"      },      "rawPayload": "0x2a8073568c8fad3edf15f70c3471a7fff18e1d57c650a501ab47f57a5c1f0e39"    },    "feePayment": {      "sponsored": false,      "tokenAddress": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",      "maxAmount": "0x1f34"    },    "details": {      "type": "user-operation",      "data": {        "hash": "0xc69e468aa6fafb5c7298c02841e76f976b433018266af39a5807bc29ea9ad392",        "calls": [          {            "to": "0x1234567890123456789012345678901234567890",            "data": "0x"          }        ]      }    }  }}

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wallet_prepareCalls

Path Parameters

apiKey

Request

params[0]

Responses

200