{"version":3,"sources":["../../src/exact/client/eip3009.ts","../../src/exact/client/scheme.ts","../../src/exact/client/register.ts"],"sourcesContent":["import { PaymentRequirements, PaymentPayloadResult } from \"@x402/core/types\";\nimport { getAddress } from \"viem\";\nimport { authorizationTypes } from \"../../constants\";\nimport { ClientEvmSigner } from \"../../signer\";\nimport { ExactEIP3009Payload } from \"../../types\";\nimport { createNonce, getEvmChainId } from \"../../utils\";\n\n/**\n * Creates an EIP-3009 (transferWithAuthorization) payload.\n *\n * @param signer - The EVM signer for client operations\n * @param x402Version - The x402 protocol version\n * @param paymentRequirements - The payment requirements\n * @returns Promise resolving to a payment payload result\n */\nexport async function createEIP3009Payload(\n signer: ClientEvmSigner,\n x402Version: number,\n paymentRequirements: PaymentRequirements,\n): Promise {\n const nonce = createNonce();\n const now = Math.floor(Date.now() / 1000);\n\n const authorization: ExactEIP3009Payload[\"authorization\"] = {\n from: signer.address,\n to: getAddress(paymentRequirements.payTo),\n value: paymentRequirements.amount,\n validAfter: \"0\",\n validBefore: (now + paymentRequirements.maxTimeoutSeconds).toString(),\n nonce,\n };\n\n const signature = await signEIP3009Authorization(signer, authorization, paymentRequirements);\n\n const payload: ExactEIP3009Payload = {\n authorization,\n signature,\n };\n\n return {\n x402Version,\n payload,\n };\n}\n\n/**\n * Sign the EIP-3009 authorization using EIP-712.\n *\n * @param signer - The EVM signer\n * @param authorization - The authorization to sign\n * @param requirements - The payment requirements\n * @returns Promise resolving to the signature\n */\nasync function signEIP3009Authorization(\n signer: ClientEvmSigner,\n authorization: ExactEIP3009Payload[\"authorization\"],\n requirements: PaymentRequirements,\n): Promise<`0x${string}`> {\n const chainId = getEvmChainId(requirements.network);\n\n if (!requirements.extra?.name || !requirements.extra?.version) {\n throw new Error(\n `EIP-712 domain parameters (name, version) are required in payment requirements for asset ${requirements.asset}`,\n );\n }\n\n const { name, version } = requirements.extra;\n\n const domain = {\n name,\n version,\n chainId,\n verifyingContract: getAddress(requirements.asset),\n };\n\n const message = {\n from: getAddress(authorization.from),\n to: getAddress(authorization.to),\n value: BigInt(authorization.value),\n validAfter: BigInt(authorization.validAfter),\n validBefore: BigInt(authorization.validBefore),\n nonce: authorization.nonce,\n };\n\n return await signer.signTypedData({\n domain,\n types: authorizationTypes,\n primaryType: \"TransferWithAuthorization\",\n message,\n });\n}\n","import {\n SchemeNetworkClient,\n PaymentRequirements,\n PaymentPayloadResult,\n PaymentPayloadContext,\n} from \"@x402/core/types\";\nimport { ClientEvmSigner } from \"../../signer\";\nimport { AssetTransferMethod } from \"../../types\";\nimport { createEIP3009Payload } from \"./eip3009\";\nimport { createPermit2Payload } from \"./permit2\";\nimport {\n trySignEip2612PermitExtension,\n trySignErc20ApprovalExtension,\n} from \"../../shared/extensions\";\nimport { ExactEvmSchemeOptions } from \"./rpc\";\n\n/**\n * EVM client implementation for the Exact payment scheme.\n * Supports both EIP-3009 (transferWithAuthorization) and Permit2 flows.\n *\n * Routes to the appropriate authorization method based on\n * `requirements.extra.assetTransferMethod`. Defaults to EIP-3009\n * for backward compatibility with older facilitators.\n *\n * When the server advertises `eip2612GasSponsoring` and the asset transfer\n * method is `permit2`, the scheme automatically signs an EIP-2612 permit\n * if the user lacks Permit2 approval. This requires `readContract` on the signer.\n */\nexport class ExactEvmScheme implements SchemeNetworkClient {\n readonly scheme = \"exact\";\n\n /**\n * Creates a new ExactEvmClient instance.\n *\n * @param signer - The EVM signer for client operations.\n * Base flow only requires `address` + `signTypedData`.\n * Extension enrichment (EIP-2612 / ERC-20 approval sponsoring) additionally\n * requires optional capabilities like `readContract` and tx signing helpers.\n * @param options - Optional RPC configuration used to backfill extension capabilities.\n */\n constructor(\n private readonly signer: ClientEvmSigner,\n private readonly options?: ExactEvmSchemeOptions,\n ) {}\n\n /**\n * Creates a payment payload for the Exact scheme.\n * Routes to EIP-3009 or Permit2 based on requirements.extra.assetTransferMethod.\n *\n * For Permit2 flows, if the server advertises `eip2612GasSponsoring` and the\n * signer supports `readContract`, automatically signs an EIP-2612 permit\n * when Permit2 allowance is insufficient.\n *\n * @param x402Version - The x402 protocol version\n * @param paymentRequirements - The payment requirements\n * @param context - Optional context with server-declared extensions\n * @returns Promise resolving to a payment payload result (with optional extensions)\n */\n async createPaymentPayload(\n x402Version: number,\n paymentRequirements: PaymentRequirements,\n context?: PaymentPayloadContext,\n ): Promise {\n const assetTransferMethod =\n (paymentRequirements.extra?.assetTransferMethod as AssetTransferMethod) ?? \"eip3009\";\n\n if (assetTransferMethod === \"permit2\") {\n const result = await createPermit2Payload(this.signer, x402Version, paymentRequirements);\n\n const eip2612Extensions = await trySignEip2612PermitExtension(\n this.signer,\n this.options,\n paymentRequirements,\n result,\n context,\n );\n\n if (eip2612Extensions) {\n return {\n ...result,\n extensions: eip2612Extensions,\n };\n }\n\n const erc20Extensions = await trySignErc20ApprovalExtension(\n this.signer,\n this.options,\n paymentRequirements,\n context,\n );\n if (erc20Extensions) {\n return {\n ...result,\n extensions: erc20Extensions,\n };\n }\n\n return result;\n }\n\n return createEIP3009Payload(this.signer, x402Version, paymentRequirements);\n }\n}\n","import { x402Client, SelectPaymentRequirements, PaymentPolicy } from \"@x402/core/client\";\nimport { Network } from \"@x402/core/types\";\nimport { ClientEvmSigner } from \"../../signer\";\nimport { ExactEvmScheme } from \"./scheme\";\nimport { ExactEvmSchemeOptions } from \"./rpc\";\nimport { ExactEvmSchemeV1 } from \"../v1/client/scheme\";\nimport { NETWORKS } from \"../../v1\";\n\n/**\n * Configuration options for registering EVM schemes to an x402Client\n */\nexport interface EvmClientConfig {\n /**\n * The EVM signer to use for creating payment payloads\n */\n signer: ClientEvmSigner;\n\n /**\n * Optional payment requirements selector function\n * If not provided, uses the default selector (first available option)\n */\n paymentRequirementsSelector?: SelectPaymentRequirements;\n\n /**\n * Optional policies to apply to the client\n */\n policies?: PaymentPolicy[];\n\n /**\n * Optional Exact EVM client scheme options.\n * Supports either a single config ({ rpcUrl }) or per-chain configs\n * keyed by EVM chain ID ({ 8453: { rpcUrl: \"...\" } }).\n */\n schemeOptions?: ExactEvmSchemeOptions;\n\n /**\n * Optional specific networks to register.\n * If not provided, registers wildcard support (eip155:*).\n */\n networks?: Network[];\n}\n\n/**\n * Registers EVM exact payment schemes to an x402Client instance.\n *\n * This function registers:\n * - V2: eip155:* wildcard scheme with ExactEvmScheme (or specific networks if provided)\n * - V1: All supported EVM networks with ExactEvmSchemeV1\n *\n * @param client - The x402Client instance to register schemes to\n * @param config - Configuration for EVM client registration\n * @returns The client instance for chaining\n *\n * @example\n * ```typescript\n * import { registerExactEvmScheme } from \"@x402/evm/exact/client/register\";\n * import { x402Client } from \"@x402/core/client\";\n * import { privateKeyToAccount } from \"viem/accounts\";\n *\n * const account = privateKeyToAccount(\"0x...\");\n * const client = new x402Client();\n * registerExactEvmScheme(client, { signer: account });\n * ```\n */\nexport function registerExactEvmScheme(client: x402Client, config: EvmClientConfig): x402Client {\n const evmScheme = new ExactEvmScheme(config.signer, config.schemeOptions);\n\n // Register V2 scheme\n // EIP-2612 gas sponsoring is handled internally by the scheme when the\n // server advertises support - no separate extension registration needed.\n if (config.networks && config.networks.length > 0) {\n // Register specific networks\n config.networks.forEach(network => {\n client.register(network, evmScheme);\n });\n } else {\n // Register wildcard for all EVM chains\n client.register(\"eip155:*\", evmScheme);\n }\n\n // Register all V1 networks\n NETWORKS.forEach(network => {\n client.registerV1(network as Network, new ExactEvmSchemeV1(config.signer));\n });\n\n // Apply policies if provided\n if (config.policies) {\n config.policies.forEach(policy => {\n client.registerPolicy(policy);\n });\n }\n\n return client;\n}\n"],"mappings":";;;;;;;;;;;;;;;;;;;;AACA,SAAS,kBAAkB;AAc3B,eAAsB,qBACpB,QACA,aACA,qBAC+B;AAC/B,QAAM,QAAQ,YAAY;AAC1B,QAAM,MAAM,KAAK,MAAM,KAAK,IAAI,IAAI,GAAI;AAExC,QAAM,gBAAsD;AAAA,IAC1D,MAAM,OAAO;AAAA,IACb,IAAI,WAAW,oBAAoB,KAAK;AAAA,IACxC,OAAO,oBAAoB;AAAA,IAC3B,YAAY;AAAA,IACZ,cAAc,MAAM,oBAAoB,mBAAmB,SAAS;AAAA,IACpE;AAAA,EACF;AAEA,QAAM,YAAY,MAAM,yBAAyB,QAAQ,eAAe,mBAAmB;AAE3F,QAAM,UAA+B;AAAA,IACnC;AAAA,IACA;AAAA,EACF;AAEA,SAAO;AAAA,IACL;AAAA,IACA;AAAA,EACF;AACF;AAUA,eAAe,yBACb,QACA,eACA,cACwB;AACxB,QAAM,UAAU,cAAc,aAAa,OAAO;AAElD,MAAI,CAAC,aAAa,OAAO,QAAQ,CAAC,aAAa,OAAO,SAAS;AAC7D,UAAM,IAAI;AAAA,MACR,4FAA4F,aAAa,KAAK;AAAA,IAChH;AAAA,EACF;AAEA,QAAM,EAAE,MAAM,QAAQ,IAAI,aAAa;AAEvC,QAAM,SAAS;AAAA,IACb;AAAA,IACA;AAAA,IACA;AAAA,IACA,mBAAmB,WAAW,aAAa,KAAK;AAAA,EAClD;AAEA,QAAM,UAAU;AAAA,IACd,MAAM,WAAW,cAAc,IAAI;AAAA,IACnC,IAAI,WAAW,cAAc,EAAE;AAAA,IAC/B,OAAO,OAAO,cAAc,KAAK;AAAA,IACjC,YAAY,OAAO,cAAc,UAAU;AAAA,IAC3C,aAAa,OAAO,cAAc,WAAW;AAAA,IAC7C,OAAO,cAAc;AAAA,EACvB;AAEA,SAAO,MAAM,OAAO,cAAc;AAAA,IAChC;AAAA,IACA,OAAO;AAAA,IACP,aAAa;AAAA,IACb;AAAA,EACF,CAAC;AACH;;;AC9DO,IAAM,iBAAN,MAAoD;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,EAYzD,YACmB,QACA,SACjB;AAFiB;AACA;AAbnB,SAAS,SAAS;AAAA,EAcf;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,EAeH,MAAM,qBACJ,aACA,qBACA,SAC+B;AAC/B,UAAM,sBACH,oBAAoB,OAAO,uBAA+C;AAE7E,QAAI,wBAAwB,WAAW;AACrC,YAAM,SAAS,MAAM,qBAAqB,KAAK,QAAQ,aAAa,mBAAmB;AAEvF,YAAM,oBAAoB,MAAM;AAAA,QAC9B,KAAK;AAAA,QACL,KAAK;AAAA,QACL;AAAA,QACA;AAAA,QACA;AAAA,MACF;AAEA,UAAI,mBAAmB;AACrB,eAAO;AAAA,UACL,GAAG;AAAA,UACH,YAAY;AAAA,QACd;AAAA,MACF;AAEA,YAAM,kBAAkB,MAAM;AAAA,QAC5B,KAAK;AAAA,QACL,KAAK;AAAA,QACL;AAAA,QACA;AAAA,MACF;AACA,UAAI,iBAAiB;AACnB,eAAO;AAAA,UACL,GAAG;AAAA,UACH,YAAY;AAAA,QACd;AAAA,MACF;AAEA,aAAO;AAAA,IACT;AAEA,WAAO,qBAAqB,KAAK,QAAQ,aAAa,mBAAmB;AAAA,EAC3E;AACF;;;ACtCO,SAAS,uBAAuB,QAAoB,QAAqC;AAC9F,QAAM,YAAY,IAAI,eAAe,OAAO,QAAQ,OAAO,aAAa;AAKxE,MAAI,OAAO,YAAY,OAAO,SAAS,SAAS,GAAG;AAEjD,WAAO,SAAS,QAAQ,aAAW;AACjC,aAAO,SAAS,SAAS,SAAS;AAAA,IACpC,CAAC;AAAA,EACH,OAAO;AAEL,WAAO,SAAS,YAAY,SAAS;AAAA,EACvC;AAGA,WAAS,QAAQ,aAAW;AAC1B,WAAO,WAAW,SAAoB,IAAI,iBAAiB,OAAO,MAAM,CAAC;AAAA,EAC3E,CAAC;AAGD,MAAI,OAAO,UAAU;AACnB,WAAO,SAAS,QAAQ,YAAU;AAChC,aAAO,eAAe,MAAM;AAAA,IAC9B,CAAC;AAAA,EACH;AAEA,SAAO;AACT;","names":[]}