> ## Documentation Index > Fetch the complete documentation index at: https://docs.gelato.cloud/llms.txt > Use this file to discover all available pages before exploring further. # gelato_getUserOperationQuote > Returns a detailed quote for a `UserOperation` including gas limits, fees, and total cost. ## OpenAPI ````yaml /paymaster-&-bundler/bundler-api-endpoints/erc4337/gelato_getUserOperationQuote.json post /rpc/{chainId} openapi: 3.1.0 info: title: gelato_getUserOperationQuote version: 1.0.0 servers: - url: https://api.gelato.cloud security: [] paths: /rpc/{chainId}: post: summary: gelato_getUserOperationQuote description: >- Returns a detailed quote for a `UserOperation` including gas limits, fees, and total cost. parameters: - name: chainId in: path required: true schema: type: number description: Target network chain identifier. - name: X-API-Key in: header required: true schema: type: string description: >- Gelato API key for higher rate limits. This must be provided if sponsoring off-chain via Gas Tank. requestBody: content: application/json: schema: $ref: '#/components/schemas/Request' example: id: 1 jsonrpc: '2.0' method: gelato_getUserOperationQuote params: - sender: 0x.... nonce: 0x.... factory: 0x.... factoryData: 0x.... callData: 0x.... signature: 0x.... maxFeePerGas: 0x.... maxPriorityFeePerGas: 0x.... paymaster: 0x.... paymasterData: 0x.... eip7702Auth: address: 0x.... chainId: 0x.... nonce: 0x.... r: 0x.... s: 0x.... yParity: 0x.... - '0x0000000071727De22E5E9d8BAf0edAc6f37da032' - 0xsender: balance: 0x.... nonce: 0x.... code: 0x.... required: true responses: '200': description: Successful response content: application/json: schema: $ref: '#/components/schemas/Response' '400': description: Validation error content: application/json: schema: type: object properties: message: type: string components: schemas: Request: type: object properties: id: type: number default: 1 jsonrpc: type: string default: '2.0' method: type: string default: gelato_getUserOperationQuote params: type: array description: >- 1. Object - The `UserOperation` object (gas limits and prices are optional) 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. 3. Object - Optional state override set that allows changes to the state of a contract before executing the call. minItems: 2 maxItems: 3 items: oneOf: - $ref: '#/components/schemas/UserOperationEntryPoint0.7' - $ref: '#/components/schemas/UserOperationEntryPoint0.6' - $ref: '#/components/schemas/EntryPointAddress' - $ref: '#/components/schemas/StateOverrideSet' Response: type: object properties: id: type: number default: 1 jsonrpc: type: string default: '2.0' result: type: object properties: callGasLimit: type: string description: Gas used by inner account execution example: '0x358e' fee: type: string description: Total fee for the UserOperation example: '0x2386f26fc10000' gas: type: string description: Total gas limit for the UserOperation example: '0x5208' l1Fee: type: string description: L1 fee for L2 networks (optional, only present on L2 chains) example: '0x0' preVerificationGas: type: string description: Gas overhead of this `UserOperation` example: '0x0' verificationGasLimit: type: string description: Gas used by the validation of this `UserOperation` example: '0x148a6' required: - callGasLimit - fee - gas - preVerificationGas - verificationGasLimit UserOperationEntryPoint0.7: type: object title: '`UserOperationEntryPoint0.7`' properties: sender: type: string description: >- The address of the account initiating the UserOperation. Can be a counterfactual address if the account is yet to be deployed. nonce: type: string description: >- A unique sequential number used to prevent replay attacks and ensure correct execution ordering. factory: type: string description: >- The address of the contract responsible for deploying the smart account, if the account is not yet deployed. factoryData: type: string description: >- Encoded constructor or init data to be passed to the factory contract for creating the smart account. eip7702Auth: $ref: '#/components/schemas/eip7702Auth' signature: type: string description: >- Cryptographic signature (or authorization data) from the account, used to prove that the operation is valid and authorized. callData: type: string description: >- Encoded data specifying one or more function calls the smart account will execute during the operation. maxFeePerGas: type: string description: Maximum fee per gas for the UserOperation maxPriorityFeePerGas: type: string description: Maximum priority fee per gas for the UserOperation paymaster: type: string description: Paymaster address (Empty for sponsored and native payments) paymasterData: type: string description: Paymaster data (Empty for sponsored and native payments) required: - sender - nonce - callData - signature - maxFeePerGas - maxPriorityFeePerGas UserOperationEntryPoint0.6: type: object title: '`UserOperationEntryPoint0.6`' properties: sender: type: string description: >- The address of the account initiating the UserOperation. Can be a counterfactual address if the account is yet to be deployed. nonce: type: string description: >- A unique sequential number used to prevent replay attacks and ensure correct execution ordering. initCode: type: string description: Applicable when account is not deployed eip7702Auth: $ref: '#/components/schemas/eip7702Auth' callData: type: string description: >- Encoded data specifying one or more function calls the smart account will execute during the operation. signature: type: string description: >- Cryptographic signature (or authorization data) from the account, used to prove that the operation is valid and authorized. maxFeePerGas: type: string description: Maximum fee per gas for the UserOperation maxPriorityFeePerGas: type: string description: Maximum priority fee per gas for the UserOperation paymasterAndData: type: string description: Paymaster data (Empty for sponsored and native payments) required: - sender - nonce - callData - signature - maxFeePerGas - maxPriorityFeePerGas EntryPointAddress: type: string title: '`EntryPointAddress`' default: '0x0000000071727De22E5E9d8BAf0edAc6f37da032' StateOverrideSet: type: object title: '`StateOverrideSet`' description: >- Enables temporary modifications to contract state during call execution. This allows testing scenarios with altered variable values such as balances or approvals without permanently modifying the blockchain state. additionalProperties: type: object properties: balance: type: string description: >- Temporary balance value to assign to the account during call execution (maximum 32 bytes) nonce: type: string description: >- Temporary nonce value to assign to the account during call execution (maximum 8 bytes) code: type: string description: >- Temporary EVM bytecode to insert into the account during call execution state: type: object description: >- Temporary key-value pairs to replace all storage slots in the account during call execution stateDiff: type: object description: >- Temporary key-value pairs to modify specific storage slots in the account during call execution eip7702Auth: type: object title: eip7702Auth description: The authorization object that an EOA account delegates to in EIP-7702 properties: address: type: string description: The address of the authorization chainId: type: string description: The chain Id of the authorization nonce: type: string description: The nonce for the authorization r: type: string description: R parameter of signed authorization s: type: string description: S parameter of signed authorization yParity: type: string description: Y parity parameter of signed authorization ````