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Faremeter API
Faremeter API / payment-evm/src / exact

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exact

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Type Aliases

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eip712Domain

eip712Domain = typeof eip712Domain.infer
Defined in: packages/payment-evm/src/exact/constants.ts:97

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x402ExactPayload

x402ExactPayload = typeof x402ExactPayload.infer
Defined in: packages/payment-evm/src/exact/constants.ts:79

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Variables

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EIP712_TYPES

const EIP712_TYPES: object
Defined in: packages/payment-evm/src/exact/constants.ts:64

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Type declaration

TransferWithAuthorization
readonly TransferWithAuthorization: readonly [{ name: "from"; type: "address"; }, { name: "to"; type: "address"; }, { name: "value"; type: "uint256"; }, { name: "validAfter"; type: "uint256"; }, { name: "validBefore"; type: "uint256"; }, { name: "nonce"; type: "bytes32"; }]

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eip712Domain

const eip712Domain: Type<{ chainId?: number; name?: string; verifyingContract?: string; version?: string; }, { }>
Defined in: packages/payment-evm/src/exact/constants.ts:97 Validator for EIP-712 domain parameters provided in payment requirements.

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TRANSFER_WITH_AUTHORIZATION_ABI

const TRANSFER_WITH_AUTHORIZATION_ABI: readonly [{ inputs: readonly [{ name: "from"; type: "address"; }, { name: "to"; type: "address"; }, { name: "value"; type: "uint256"; }, { name: "validAfter"; type: "uint256"; }, { name: "validBefore"; type: "uint256"; }, { name: "nonce"; type: "bytes32"; }, { name: "v"; type: "uint8"; }, { name: "r"; type: "bytes32"; }, { name: "s"; type: "bytes32"; }]; name: "transferWithAuthorization"; outputs: readonly []; stateMutability: "nonpayable"; type: "function"; }, { inputs: readonly [{ name: "authorizer"; type: "address"; }, { name: "nonce"; type: "bytes32"; }]; name: "authorizationState"; outputs: readonly [{ name: ""; type: "bool"; }]; stateMutability: "view"; type: "function"; }, { inputs: readonly []; name: "name"; outputs: readonly [{ name: ""; type: "string"; }]; stateMutability: "view"; type: "function"; }, { inputs: readonly []; name: "version"; outputs: readonly [{ name: ""; type: "string"; }]; stateMutability: "view"; type: "function"; }, { inputs: readonly []; name: "DOMAIN_SEPARATOR"; outputs: readonly [{ name: ""; type: "bytes32"; }]; stateMutability: "view"; type: "function"; }]
Defined in: packages/payment-evm/src/exact/constants.ts:13

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X402_EXACT_SCHEME

const X402_EXACT_SCHEME: "exact" = "exact"
Defined in: packages/payment-evm/src/exact/constants.ts:11

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x402ExactPayload

const x402ExactPayload: Type<{ authorization: { from: (In) => Out<`0x${string}`>; nonce: (In) => Out<`0x${string}`>; to: (In) => Out<`0x${string}`>; validAfter: string; validBefore: string; value: string; }; signature: (In) => Out<`0x${string}`>; }, { }>
Defined in: packages/payment-evm/src/exact/constants.ts:79 Validator for the x402 exact payment payload containing an EIP-3009 authorization and signature.

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Functions

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createFacilitatorHandler()

createFacilitatorHandler(chain, privateKey, assetNameOrInfo, opts): Promise<FacilitatorHandler>
Defined in: packages/payment-evm/src/exact/facilitator.ts:70 Creates a facilitator handler for the EVM exact payment scheme. The handler verifies EIP-3009 authorization signatures and executes the transferWithAuthorization call on the token contract.

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Parameters

chain
ChainInfoWithRPC Chain configuration including RPC URLs
privateKey
string Private key for signing settlement transactions
assetNameOrInfo
AssetNameOrContractInfo Asset name or contract info for the token
opts
CreateFacilitatorHandlerOpts = {} Optional configuration for network and transport

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Returns

Promise<FacilitatorHandler> A FacilitatorHandler for processing EVM exact payments

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createPaymentHandler()

createPaymentHandler(wallet, opts): PaymentHandler
Defined in: packages/payment-evm/src/exact/client.ts:59 Creates a payment handler for the EVM exact payment scheme. The handler generates EIP-3009 transferWithAuthorization signatures that can be executed by the facilitator to complete payments.

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Parameters

wallet
WalletForPayment Wallet providing chain context and signing capabilities
opts
CreatePaymentHandlerOpts = {} Optional configuration for the asset

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Returns

PaymentHandler A PaymentHandler function for use with the x402 client