# alchemy_requestGasAndPaymasterAndData > For the complete documentation index, see [llms.txt](/docs/llms.txt). POST https://eth-mainnet.g.alchemy.com/v2/{apiKey} Requests gas coverage for a `UserOperation`. Optionally accepts fee parameter overrides to be used in the `UserOperation`. Reference: https://www.alchemy.com/docs/wallets/api-reference/gas-manager-admin-api/gas-abstraction-api-endpoints/alchemy-request-gas-and-paymaster-and-data ## Parameters | Name | Type | Required | Description | |------|------|----------|-------------| | params[0] | object | Yes | Object containing the sponsorship request parameters. | ## Result **Response** (object): The response depends on the EntryPoint version used in the request. ## Example ### Request ```json { "jsonrpc": "2.0", "method": "alchemy_requestGasAndPaymasterAndData", "params": [ { "webhookData": "example webhook data", "policyId": "69d524a7-e932-4214-8673-dcdcba31bb42", "entryPoint": "0x0000000071727De22E5E9d8BAf0edAc6f37da032", "dummySignature": "0xfffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c", "userOperation": { "sender": "0x1234567890123456789012345678901234567890", "nonce": "0x1", "callData": "0xabcdef", "callGasLimit": "0x5208", "verificationGasLimit": "0x5208", "preVerificationGas": "0x5208", "maxFeePerGas": "0x1", "maxPriorityFeePerGas": "0x1" } } ], "id": 1 } ``` ### Response ```json { "jsonrpc": "2.0", "result": { "paymaster": "0x4685d4c74BaC297e23D5C7D1a2bFc1b4581e6704", "paymasterData": "0x00000067890abcdef1234567890abcdef1234567890abcdef", "callGasLimit": "0x5208", "verificationGasLimit": "0x5208", "preVerificationGas": "0x5208", "maxFeePerGas": "0x1", "maxPriorityFeePerGas": "0x1", "paymasterVerificationGasLimit": "0x5208", "paymasterPostOpGasLimit": "0x5208" }, "id": 1 } ``` ## Code Examples ### cURL ```bash curl --request POST \ --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \ --header 'Content-Type: application/json' \ --data '{ "jsonrpc": "2.0", "id": 1, "method": "alchemy_requestGasAndPaymasterAndData", "params": [ { "policyId": "string", "erc20Context": { "tokenAddress": "string", "maxTokenAmount": 1, "permit": "string" }, "entryPoint": "string", "dummySignature": "string", "userOperation": { "sender": "string", "nonce": "string", "initCode": "string", "callData": "string", "callGasLimit": "string", "verificationGasLimit": "string", "preVerificationGas": "string", "maxFeePerGas": "string", "maxPriorityFeePerGas": "string", "eip7702Auth": { "chain_id": "string", "address": "string", "nonce": "string", "y_parity": "string", "r": "string", "s": "string" } }, "overrides": { "maxFeePerGas": "string", "maxPriorityFeePerGas": "string", "callGasLimit": "string", "verificationGasLimit": "string", "preVerificationGas": "string" }, "stateOverrideSet": { "balance": "string", "nonce": "string", "code": "string", "state": { "property1": "string" }, "stateDiff": { "property1": "string" } }, "webhookData": "string" } ] }' ``` ### JavaScript ```javascript const options = { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify({ jsonrpc: '2.0', id: 1, method: 'alchemy_requestGasAndPaymasterAndData', params: [ { policyId: 'string', erc20Context: {tokenAddress: 'string', maxTokenAmount: 1, permit: 'string'}, entryPoint: 'string', dummySignature: 'string', userOperation: { sender: 'string', nonce: 'string', initCode: 'string', callData: 'string', callGasLimit: 'string', verificationGasLimit: 'string', preVerificationGas: 'string', maxFeePerGas: 'string', maxPriorityFeePerGas: 'string', eip7702Auth: { chain_id: 'string', address: 'string', nonce: 'string', y_parity: 'string', r: 'string', s: 'string' } }, overrides: { maxFeePerGas: 'string', maxPriorityFeePerGas: 'string', callGasLimit: 'string', verificationGasLimit: 'string', preVerificationGas: 'string' }, stateOverrideSet: { balance: 'string', nonce: 'string', code: 'string', state: {property1: 'string'}, stateDiff: {property1: 'string'} }, webhookData: 'string' } ] }) }; fetch('https://eth-mainnet.g.alchemy.com/v2/docs-demo', options) .then(res => res.json()) .then(res => console.log(res)) .catch(err => console.error(err)); ``` ### Python ```python import requests url = "https://eth-mainnet.g.alchemy.com/v2/docs-demo" payload = { "jsonrpc": "2.0", "id": 1, "method": "alchemy_requestGasAndPaymasterAndData", "params": [ { "policyId": "string", "erc20Context": { "tokenAddress": "string", "maxTokenAmount": 1, "permit": "string" }, "entryPoint": "string", "dummySignature": "string", "userOperation": { "sender": "string", "nonce": "string", "initCode": "string", "callData": "string", "callGasLimit": "string", "verificationGasLimit": "string", "preVerificationGas": "string", "maxFeePerGas": "string", "maxPriorityFeePerGas": "string", "eip7702Auth": { "chain_id": "string", "address": "string", "nonce": "string", "y_parity": "string", "r": "string", "s": "string" } }, "overrides": { "maxFeePerGas": "string", "maxPriorityFeePerGas": "string", "callGasLimit": "string", "verificationGasLimit": "string", "preVerificationGas": "string" }, "stateOverrideSet": { "balance": "string", "nonce": "string", "code": "string", "state": { "property1": "string" }, "stateDiff": { "property1": "string" } }, "webhookData": "string" } ] } headers = {"Content-Type": "application/json"} response = requests.post(url, json=payload, headers=headers) print(response.text) ``` ### Go ```go package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://eth-mainnet.g.alchemy.com/v2/docs-demo" payload := strings.NewReader("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"alchemy_requestGasAndPaymasterAndData\",\n \"params\": [\n {\n \"policyId\": \"string\",\n \"erc20Context\": {\n \"tokenAddress\": \"string\",\n \"maxTokenAmount\": 1,\n \"permit\": \"string\"\n },\n \"entryPoint\": \"string\",\n \"dummySignature\": \"string\",\n \"userOperation\": {\n \"sender\": \"string\",\n \"nonce\": \"string\",\n \"initCode\": \"string\",\n \"callData\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\",\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"eip7702Auth\": {\n \"chain_id\": \"string\",\n \"address\": \"string\",\n \"nonce\": \"string\",\n \"y_parity\": \"string\",\n \"r\": \"string\",\n \"s\": \"string\"\n }\n },\n \"overrides\": {\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\"\n },\n \"stateOverrideSet\": {\n \"balance\": \"string\",\n \"nonce\": \"string\",\n \"code\": \"string\",\n \"state\": {\n \"property1\": \"string\"\n },\n \"stateDiff\": {\n \"property1\": \"string\"\n }\n },\n \"webhookData\": \"string\"\n }\n ]\n}") req, _ := http.NewRequest("POST", url, payload) req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(string(body)) } ``` ### Java ```java HttpResponse response = Unirest.post("https://eth-mainnet.g.alchemy.com/v2/docs-demo") .header("Content-Type", "application/json") .body("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"alchemy_requestGasAndPaymasterAndData\",\n \"params\": [\n {\n \"policyId\": \"string\",\n \"erc20Context\": {\n \"tokenAddress\": \"string\",\n \"maxTokenAmount\": 1,\n \"permit\": \"string\"\n },\n \"entryPoint\": \"string\",\n \"dummySignature\": \"string\",\n \"userOperation\": {\n \"sender\": \"string\",\n \"nonce\": \"string\",\n \"initCode\": \"string\",\n \"callData\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\",\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"eip7702Auth\": {\n \"chain_id\": \"string\",\n \"address\": \"string\",\n \"nonce\": \"string\",\n \"y_parity\": \"string\",\n \"r\": \"string\",\n \"s\": \"string\"\n }\n },\n \"overrides\": {\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\"\n },\n \"stateOverrideSet\": {\n \"balance\": \"string\",\n \"nonce\": \"string\",\n \"code\": \"string\",\n \"state\": {\n \"property1\": \"string\"\n },\n \"stateDiff\": {\n \"property1\": \"string\"\n }\n },\n \"webhookData\": \"string\"\n }\n ]\n}") .asString(); ``` ### C# ```csharp using RestSharp; var options = new RestClientOptions("https://eth-mainnet.g.alchemy.com/v2/docs-demo"); var client = new RestClient(options); var request = new RestRequest(""); request.AddJsonBody("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"alchemy_requestGasAndPaymasterAndData\",\n \"params\": [\n {\n \"policyId\": \"string\",\n \"erc20Context\": {\n \"tokenAddress\": \"string\",\n \"maxTokenAmount\": 1,\n \"permit\": \"string\"\n },\n \"entryPoint\": \"string\",\n \"dummySignature\": \"string\",\n \"userOperation\": {\n \"sender\": \"string\",\n \"nonce\": \"string\",\n \"initCode\": \"string\",\n \"callData\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\",\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"eip7702Auth\": {\n \"chain_id\": \"string\",\n \"address\": \"string\",\n \"nonce\": \"string\",\n \"y_parity\": \"string\",\n \"r\": \"string\",\n \"s\": \"string\"\n }\n },\n \"overrides\": {\n \"maxFeePerGas\": \"string\",\n \"maxPriorityFeePerGas\": \"string\",\n \"callGasLimit\": \"string\",\n \"verificationGasLimit\": \"string\",\n \"preVerificationGas\": \"string\"\n },\n \"stateOverrideSet\": {\n \"balance\": \"string\",\n \"nonce\": \"string\",\n \"code\": \"string\",\n \"state\": {\n \"property1\": \"string\"\n },\n \"stateDiff\": {\n \"property1\": \"string\"\n }\n },\n \"webhookData\": \"string\"\n }\n ]\n}", false); var response = await client.PostAsync(request); Console.WriteLine("{0}", response.Content); ``` ## OpenRPC Method Specification ```yaml name: alchemy_requestGasAndPaymasterAndData description: | Requests gas coverage for a `UserOperation`. Optionally accepts fee parameter overrides to be used in the `UserOperation`. params: - name: params[0] required: true description: Object containing the sponsorship request parameters. schema: type: object required: - policyId - entryPoint - dummySignature - userOperation properties: policyId: description: The Gas Manager Policy ID or list of Gas Manager Policy IDs. oneOf: - type: string title: policyId format: uuid - type: array title: policyId Array items: type: string format: uuid erc20Context: description: Erc20 context, required to enable users to pay gas with ERC-20 tokens. title: Context for Erc20 paymaster type: object properties: tokenAddress: description: Erc20 contract address title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ maxTokenAmount: description: Maximum allowed amount of value in raw token amount title: positive decimal number type: number minimum: 0 permit: description: A 7597 typed permit title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ entryPoint: type: string pattern: ^0[xX][0-9a-fA-F]*$ description: The EntryPoint address the request should be sent through. This MUST be one of the EntryPoints returned by the `supportedEntryPoints` RPC call and match the version of the userOperation in the `userOperation` field. dummySignature: type: string description: Dummy signature for the userOperation. This is useful for estimating gas costs. Check our [FAQs](/docs/reference/bundler-faqs#what-is-a-dummy-signature) to learn what a dummy signature is. userOperation: title: User Operation, either v0.6 or v0.7 (missing signature, paymasterData, and gas fields) description: An object containing optional gas parameters, `paymasterAndData`, and signature fields. It can be either a v0.6 or v0.7 userOperation but must match the version of the EntryPoint at the specified `entryPoint`. oneOf: - title: User Operation v0.6 type: object properties: sender: description: The account making the operation title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ nonce: description: Anti-replay parameter; used as salt for first-time account creation title: hex encoded unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]*|0)$ initCode: description: The initCode of the account (needed if the account is not yet on-chain and needs creation) title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ callData: description: Encoded data for the primary function call or operation title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ callGasLimit: description: Gas allocated for the main execution call title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ verificationGasLimit: description: Gas allocated for verification title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ preVerificationGas: description: Gas for pre-verification execution and calldata title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxFeePerGas: description: Maximum fee per gas (EIP-1559) title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxPriorityFeePerGas: description: Max priority fee per gas (EIP-1559) title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ eip7702Auth: description: The authorization tuple that an EOA account delegates to in EIP-7702 title: Eip 7702 Auth type: object properties: chain_id: description: The chain Id of the authorization title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ address: description: The address of the authorization title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ nonce: description: The nonce for the authorization title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ y_parity: description: Y parity of signed authorizzation tuple title: hex encoded unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]*|0)$ r: description: R of signed authorizzation tuple title: hex encoded 256 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,31})|0$ s: description: S of signed authorizzation tuple title: hex encoded 256 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,31})|0$ - title: User Operation v0.7 type: object properties: sender: description: Account initiating operation title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ nonce: description: Account nonce or creation salt title: hex encoded unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]*|0)$ callData: description: Data for operation call title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ callGasLimit: description: Gas allocated for call title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ verificationGasLimit: description: Gas allocated for verification title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxFeePerGas: description: Max fee per gas (EIP-1559) title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxPriorityFeePerGas: description: Priority fee per gas (EIP-1559) title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ paymaster: description: Paymaster contract address title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ paymasterVerificationGasLimit: description: The gas limit for paymaster verification. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ factory: description: The account factory address (needed if and only if the account is not yet on-chain and needs to be created) title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ factoryData: description: Data for the account factory (only if the account factory exists) title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ preVerificationGas: description: The amount of gas to pay for to compensate the bundler for pre-verification execution and calldata title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ paymasterPostOpGasLimit: description: The amount of gas to allocate for the paymaster post-op code (only if a paymaster exists) title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ eip7702Auth: description: The authorization tuple that an EOA account delegates to in EIP-7702 title: Eip 7702 Auth type: object properties: chain_id: description: The chain Id of the authorization title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ address: description: The address of the authorization title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ nonce: description: The nonce for the authorization title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ y_parity: description: Y parity of signed authorizzation tuple title: hex encoded unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]*|0)$ r: description: R of signed authorizzation tuple title: hex encoded 256 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,31})|0$ s: description: S of signed authorizzation tuple title: hex encoded 256 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,31})|0$ overrides: type: object description: | Optional fields that override our gas and fee estimates. Use this parameter to override: `maxFeePerGas`, `maxPriorityFeePerGas`, `callGasLimit`, `verificationGasLimit`, or `preVerificationGas`. This will apply either: - absolutes overrides (using a hex string) simply overriding estimated values entirely OR - multiplier overrides relative to our estimates (in the format of { "multiplier": number } with max precision of 4 decimal places). For example, if the override value is { multiplier: 1.1 } for the `maxPriorityFeePerGas` field, then a 1.1 multiplier, or a 10% increase, is applied to the estimated `maxPriorityFeePerGas` of the userOp. A higher buffer may give userOps a better chance to mine if the L1/L2 gas and fees change. ```json "overrides": { "maxFeePerGas": "hex string" | { "multiplier": number }, "maxPriorityFeePerGas": "hex string" | { "multiplier": number }, "callGasLimit": "hex string" | { "multiplier": number }, "verificationGasLimit": "hex string" | { "multiplier": number }, "preVerificationGas": "hex string" | { "multiplier": number }, } ``` properties: maxFeePerGas: oneOf: - type: string description: Hex string. - type: object properties: multiplier: type: number description: Multiplier value. maxPriorityFeePerGas: oneOf: - type: string description: Hex string. - type: object properties: multiplier: type: number description: Multiplier value. callGasLimit: oneOf: - type: string description: Hex string. - type: object properties: multiplier: type: number description: Multiplier value. verificationGasLimit: oneOf: - type: string description: Hex string. - type: object properties: multiplier: type: number description: Multiplier value. preVerificationGas: oneOf: - type: string description: Hex string. - type: object properties: multiplier: type: number description: Multiplier value. stateOverrideSet: type: object description: | Allows changes to the state of a contract before executing the call. For example, you can modify variable values (like balances or approvals) for that call without changing the contract itself on the blockchain. In more technical terms, the state override set is an optional parameter that allows executing the call against a modified chain state. It is an address-to-state mapping, where each entry specifies some state to be overridden prior to executing the call. properties: balance: type: string description: Fake balance to set for the account before executing the call (<= 32 bytes) nonce: type: string description: Fake nonce to set for the account before executing the call (<= 8 bytes). code: type: string description: Fake EVM bytecode to inject into the account before executing the call. state: type: object description: Fake key-value mapping to override all slots in the account storage before executing the call. stateDiff: type: object description: Fake key-value mapping to override individual slots in the account storage before executing the call. webhookData: type: string description: Additional data you can include in the request, such as proof of humanity, if you have enabled custom rules in your Gas Manager policy. result: name: Response description: The response depends on the EntryPoint version used in the request. schema: oneOf: - title: Entrypoint v0.6 Response type: object required: - paymasterAndData properties: paymasterAndData: description: The 0x‑prefixed hex string for the user to put into the UO's paymasterAndData field. Contains gas manager address, sigTimeRange, and secp256k1 signature. title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ callGasLimit: description: The amount of gas to allocate for the main execution call. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ verificationGasLimit: description: The amount of gas to allocate for the verification step. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ preVerificationGas: description: The amount of gas to compensate the bundler for pre-verification execution and calldata. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxFeePerGas: description: The maximum fee per gas to pay for the execution of this operation (similar to EIP-1559 max_fee_per_gas). title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxPriorityFeePerGas: description: Maximum priority fee per gas (similar to EIP-1559 max_priority_fee_per_gas). title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ - title: Entrypoint v0.7 Response type: object required: - paymaster - paymasterData properties: paymaster: description: The paymaster address used in the operation. title: hex encoded address type: string pattern: ^0x[0-9a-fA-F]{40}$ paymasterData: description: The data for the paymaster in the operation. title: hex encoded bytes type: string pattern: ^0x[0-9a-f]*$ callGasLimit: description: The amount of gas to allocate for the main execution call. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ verificationGasLimit: description: The amount of gas to allocate for the verification step. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ preVerificationGas: description: The amount of gas to compensate the bundler for pre-verification execution and calldata. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxFeePerGas: description: The maximum fee per gas to pay for the execution of this operation (similar to EIP-1559 max_fee_per_gas). title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ maxPriorityFeePerGas: description: Maximum priority fee per gas (similar to EIP-1559 max_priority_fee_per_gas). title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ paymasterVerificationGasLimit: description: The gas limit for paymaster verification. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ paymasterPostOpGasLimit: description: The gas limit for paymaster post-operation. title: hex encoded 64 bit unsigned integer type: string pattern: ^0x([1-9a-f]+[0-9a-f]{0,15})|0$ examples: - name: alchemy_requestGasAndPaymasterAndData example params: - name: params value: webhookData: example webhook data policyId: 69d524a7-e932-4214-8673-dcdcba31bb42 entryPoint: '0x0000000071727De22E5E9d8BAf0edAc6f37da032' dummySignature: '0xfffffffffffffffffffffffffffffff0000000000000000000000000000000007aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1c' userOperation: sender: '0x1234567890123456789012345678901234567890' nonce: '0x1' callData: '0xabcdef' callGasLimit: '0x5208' verificationGasLimit: '0x5208' preVerificationGas: '0x5208' maxFeePerGas: '0x1' maxPriorityFeePerGas: '0x1' result: name: alchemy_requestGasAndPaymasterAndData response value: paymaster: '0x4685d4c74BaC297e23D5C7D1a2bFc1b4581e6704' paymasterData: '0x00000067890abcdef1234567890abcdef1234567890abcdef' callGasLimit: '0x5208' verificationGasLimit: '0x5208' preVerificationGas: '0x5208' maxFeePerGas: '0x1' maxPriorityFeePerGas: '0x1' paymasterVerificationGasLimit: '0x5208' paymasterPostOpGasLimit: '0x5208' ```