{"version":3,"sources":["../../src/exact/v1/client/scheme.ts","../../src/constants.ts","../../src/utils.ts","../../src/exact/v1/facilitator/scheme.ts","../../src/v1/index.ts"],"sourcesContent":["import {\n  Network,\n  PaymentPayload,\n  PaymentRequirements,\n  SchemeNetworkClient,\n} from \"@x402/core/types\";\nimport { PaymentRequirementsV1 } from \"@x402/core/types/v1\";\nimport { getAddress } from \"viem\";\nimport { authorizationTypes } from \"../../../constants\";\nimport { ClientEvmSigner } from \"../../../signer\";\nimport { ExactEvmPayloadV1 } from \"../../../types\";\nimport { createNonce } from \"../../../utils\";\nimport { EvmNetworkV1, getEvmChainIdV1 } from \"../../../v1\";\n\n/**\n * EVM client implementation for the Exact payment scheme (V1).\n */\nexport class ExactEvmSchemeV1 implements SchemeNetworkClient {\n  readonly scheme = \"exact\";\n\n  /**\n   * Creates a new ExactEvmClientV1 instance.\n   *\n   * @param signer - The EVM signer for client operations\n   */\n  constructor(private readonly signer: ClientEvmSigner) {}\n\n  /**\n   * Creates a payment payload for the Exact scheme (V1).\n   *\n   * @param x402Version - The x402 protocol version\n   * @param paymentRequirements - The payment requirements\n   * @returns Promise resolving to a payment payload\n   */\n  async createPaymentPayload(\n    x402Version: number,\n    paymentRequirements: PaymentRequirements,\n  ): Promise<\n    Pick<PaymentPayload, \"x402Version\" | \"payload\"> & { scheme: string; network: Network }\n  > {\n    const selectedV1 = paymentRequirements as unknown as PaymentRequirementsV1;\n    const nonce = createNonce();\n    const now = Math.floor(Date.now() / 1000);\n\n    const authorization: ExactEvmPayloadV1[\"authorization\"] = {\n      from: this.signer.address,\n      to: getAddress(selectedV1.payTo),\n      value: selectedV1.maxAmountRequired,\n      validAfter: (now - 600).toString(), // 10 minutes before\n      validBefore: (now + selectedV1.maxTimeoutSeconds).toString(),\n      nonce,\n    };\n\n    // Sign the authorization\n    const signature = await this.signAuthorization(authorization, selectedV1);\n\n    const payload: ExactEvmPayloadV1 = {\n      authorization,\n      signature,\n    };\n\n    return {\n      x402Version,\n      scheme: selectedV1.scheme,\n      network: selectedV1.network,\n      payload,\n    };\n  }\n\n  /**\n   * Sign the EIP-3009 authorization using EIP-712\n   *\n   * @param authorization - The authorization to sign\n   * @param requirements - The payment requirements\n   * @returns Promise resolving to the signature\n   */\n  private async signAuthorization(\n    authorization: ExactEvmPayloadV1[\"authorization\"],\n    requirements: PaymentRequirementsV1,\n  ): Promise<`0x${string}`> {\n    const chainId = getEvmChainIdV1(requirements.network as EvmNetworkV1);\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 this.signer.signTypedData({\n      domain,\n      types: authorizationTypes,\n      primaryType: \"TransferWithAuthorization\",\n      message,\n    });\n  }\n}\n","// EIP-3009 TransferWithAuthorization types for EIP-712 signing\nexport const authorizationTypes = {\n  TransferWithAuthorization: [\n    { name: \"from\", type: \"address\" },\n    { name: \"to\", type: \"address\" },\n    { name: \"value\", type: \"uint256\" },\n    { name: \"validAfter\", type: \"uint256\" },\n    { name: \"validBefore\", type: \"uint256\" },\n    { name: \"nonce\", type: \"bytes32\" },\n  ],\n} as const;\n\n/**\n * Permit2 EIP-712 types for signing PermitWitnessTransferFrom.\n * Must match the exact format expected by the Permit2 contract.\n * Note: Types must be in ALPHABETICAL order after the primary type (TokenPermissions < Witness).\n */\nexport const permit2WitnessTypes = {\n  PermitWitnessTransferFrom: [\n    { name: \"permitted\", type: \"TokenPermissions\" },\n    { name: \"spender\", type: \"address\" },\n    { name: \"nonce\", type: \"uint256\" },\n    { name: \"deadline\", type: \"uint256\" },\n    { name: \"witness\", type: \"Witness\" },\n  ],\n  TokenPermissions: [\n    { name: \"token\", type: \"address\" },\n    { name: \"amount\", type: \"uint256\" },\n  ],\n  Witness: [\n    { name: \"to\", type: \"address\" },\n    { name: \"validAfter\", type: \"uint256\" },\n  ],\n} as const;\n\n// EIP3009 ABI for transferWithAuthorization function\nexport const eip3009ABI = [\n  {\n    inputs: [\n      { name: \"from\", type: \"address\" },\n      { name: \"to\", type: \"address\" },\n      { name: \"value\", type: \"uint256\" },\n      { name: \"validAfter\", type: \"uint256\" },\n      { name: \"validBefore\", type: \"uint256\" },\n      { name: \"nonce\", type: \"bytes32\" },\n      { name: \"v\", type: \"uint8\" },\n      { name: \"r\", type: \"bytes32\" },\n      { name: \"s\", type: \"bytes32\" },\n    ],\n    name: \"transferWithAuthorization\",\n    outputs: [],\n    stateMutability: \"nonpayable\",\n    type: \"function\",\n  },\n  {\n    inputs: [\n      { name: \"from\", type: \"address\" },\n      { name: \"to\", type: \"address\" },\n      { name: \"value\", type: \"uint256\" },\n      { name: \"validAfter\", type: \"uint256\" },\n      { name: \"validBefore\", type: \"uint256\" },\n      { name: \"nonce\", type: \"bytes32\" },\n      { name: \"signature\", type: \"bytes\" },\n    ],\n    name: \"transferWithAuthorization\",\n    outputs: [],\n    stateMutability: \"nonpayable\",\n    type: \"function\",\n  },\n  {\n    inputs: [{ name: \"account\", type: \"address\" }],\n    name: \"balanceOf\",\n    outputs: [{ name: \"\", type: \"uint256\" }],\n    stateMutability: \"view\",\n    type: \"function\",\n  },\n  {\n    inputs: [],\n    name: \"version\",\n    outputs: [{ name: \"\", type: \"string\" }],\n    stateMutability: \"view\",\n    type: \"function\",\n  },\n] as const;\n\n/**\n * EIP-2612 Permit EIP-712 types for signing token.permit().\n */\nexport const eip2612PermitTypes = {\n  Permit: [\n    { name: \"owner\", type: \"address\" },\n    { name: \"spender\", type: \"address\" },\n    { name: \"value\", type: \"uint256\" },\n    { name: \"nonce\", type: \"uint256\" },\n    { name: \"deadline\", type: \"uint256\" },\n  ],\n} as const;\n\n/**\n * EIP-2612 nonces ABI for querying current nonce.\n */\nexport const eip2612NoncesAbi = [\n  {\n    type: \"function\",\n    name: \"nonces\",\n    inputs: [{ name: \"owner\", type: \"address\" }],\n    outputs: [{ type: \"uint256\" }],\n    stateMutability: \"view\",\n  },\n] as const;\n\n/** ERC-20 approve(address,uint256) ABI for encoding/decoding approval calldata. */\nexport const erc20ApproveAbi = [\n  {\n    type: \"function\",\n    name: \"approve\",\n    inputs: [\n      { name: \"spender\", type: \"address\" },\n      { name: \"amount\", type: \"uint256\" },\n    ],\n    outputs: [{ type: \"bool\" }],\n    stateMutability: \"nonpayable\",\n  },\n] as const;\n\n/** ERC-20 allowance(address,address) ABI for checking spender approval. */\nexport const erc20AllowanceAbi = [\n  {\n    type: \"function\",\n    name: \"allowance\",\n    inputs: [\n      { name: \"owner\", type: \"address\" },\n      { name: \"spender\", type: \"address\" },\n    ],\n    outputs: [{ type: \"uint256\" }],\n    stateMutability: \"view\",\n  },\n] as const;\n\n/** Gas limit for a standard ERC-20 approve() transaction. */\nexport const ERC20_APPROVE_GAS_LIMIT = 70_000n;\n\n/** Fallback max fee per gas (1 gwei) when fee estimation fails. */\nexport const DEFAULT_MAX_FEE_PER_GAS = 1_000_000_000n;\n\n/** Fallback max priority fee per gas (0.1 gwei) when fee estimation fails. */\nexport const DEFAULT_MAX_PRIORITY_FEE_PER_GAS = 100_000_000n;\n\n/**\n * Canonical Permit2 contract address.\n * Same address on all EVM chains via CREATE2 deployment.\n *\n * @see https://github.com/Uniswap/permit2\n */\nexport const PERMIT2_ADDRESS = \"0x000000000022D473030F116dDEE9F6B43aC78BA3\" as const;\n\n/**\n * x402ExactPermit2Proxy contract address.\n * Vanity address: 0x4020...0001 for easy recognition.\n * This address is deterministic based on:\n * - Arachnid's deterministic deployer (0x4e59b44847b379578588920cA78FbF26c0B4956C)\n * - Vanity-mined salt for prefix 0x4020 and suffix 0001\n * - Contract bytecode + constructor args (PERMIT2_ADDRESS)\n */\nexport const x402ExactPermit2ProxyAddress = \"0x402085c248EeA27D92E8b30b2C58ed07f9E20001\" as const;\n\n/**\n * x402UptoPermit2Proxy contract address.\n * Vanity address: 0x4020...0002 for easy recognition.\n * This address is deterministic based on:\n * - Arachnid's deterministic deployer (0x4e59b44847b379578588920cA78FbF26c0B4956C)\n * - Vanity-mined salt for prefix 0x4020 and suffix 0002\n * - Contract bytecode + constructor args (PERMIT2_ADDRESS)\n */\nexport const x402UptoPermit2ProxyAddress = \"0x402039b3d6E6BEC5A02c2C9fd937ac17A6940002\" as const;\n\n/**\n * Shared ABI components for the Permit2 witness tuple.\n * Used in both x402ExactPermit2ProxyABI and x402UptoPermit2ProxyABI to keep them in sync.\n * The upto contract's witness struct is identical to exact (both remove 'extra' post-audit).\n */\nconst permit2WitnessABIComponents = [\n  { name: \"to\", type: \"address\", internalType: \"address\" },\n  { name: \"validAfter\", type: \"uint256\", internalType: \"uint256\" },\n] as const;\n\n/**\n * x402UptoPermit2Proxy ABI - settle function for upto payment scheme (variable amounts).\n * Updated post-audit: 'extra' removed from witness struct, 'initialize()' removed (now\n * a constructor arg), and error names aligned with x402ExactPermit2Proxy.\n */\nexport const x402UptoPermit2ProxyABI = [\n  {\n    type: \"function\",\n    name: \"PERMIT2\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"address\", internalType: \"contract ISignatureTransfer\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"WITNESS_TYPEHASH\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"bytes32\", internalType: \"bytes32\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"WITNESS_TYPE_STRING\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"string\", internalType: \"string\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"settle\",\n    inputs: [\n      {\n        name: \"permit\",\n        type: \"tuple\",\n        internalType: \"struct ISignatureTransfer.PermitTransferFrom\",\n        components: [\n          {\n            name: \"permitted\",\n            type: \"tuple\",\n            internalType: \"struct ISignatureTransfer.TokenPermissions\",\n            components: [\n              { name: \"token\", type: \"address\", internalType: \"address\" },\n              { name: \"amount\", type: \"uint256\", internalType: \"uint256\" },\n            ],\n          },\n          { name: \"nonce\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n        ],\n      },\n      { name: \"owner\", type: \"address\", internalType: \"address\" },\n      {\n        name: \"witness\",\n        type: \"tuple\",\n        internalType: \"struct x402UptoPermit2Proxy.Witness\",\n        components: permit2WitnessABIComponents,\n      },\n      { name: \"signature\", type: \"bytes\", internalType: \"bytes\" },\n    ],\n    outputs: [],\n    stateMutability: \"nonpayable\",\n  },\n  {\n    type: \"function\",\n    name: \"settleWithPermit\",\n    inputs: [\n      {\n        name: \"permit2612\",\n        type: \"tuple\",\n        internalType: \"struct x402UptoPermit2Proxy.EIP2612Permit\",\n        components: [\n          { name: \"value\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"r\", type: \"bytes32\", internalType: \"bytes32\" },\n          { name: \"s\", type: \"bytes32\", internalType: \"bytes32\" },\n          { name: \"v\", type: \"uint8\", internalType: \"uint8\" },\n        ],\n      },\n      {\n        name: \"permit\",\n        type: \"tuple\",\n        internalType: \"struct ISignatureTransfer.PermitTransferFrom\",\n        components: [\n          {\n            name: \"permitted\",\n            type: \"tuple\",\n            internalType: \"struct ISignatureTransfer.TokenPermissions\",\n            components: [\n              { name: \"token\", type: \"address\", internalType: \"address\" },\n              { name: \"amount\", type: \"uint256\", internalType: \"uint256\" },\n            ],\n          },\n          { name: \"nonce\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n        ],\n      },\n      { name: \"owner\", type: \"address\", internalType: \"address\" },\n      {\n        name: \"witness\",\n        type: \"tuple\",\n        internalType: \"struct x402UptoPermit2Proxy.Witness\",\n        components: permit2WitnessABIComponents,\n      },\n      { name: \"signature\", type: \"bytes\", internalType: \"bytes\" },\n    ],\n    outputs: [],\n    stateMutability: \"nonpayable\",\n  },\n  { type: \"event\", name: \"Settled\", inputs: [], anonymous: false },\n  { type: \"event\", name: \"SettledWithPermit\", inputs: [], anonymous: false },\n  { type: \"error\", name: \"InvalidAmount\", inputs: [] },\n  { type: \"error\", name: \"InvalidDestination\", inputs: [] },\n  { type: \"error\", name: \"InvalidOwner\", inputs: [] },\n  { type: \"error\", name: \"InvalidPermit2Address\", inputs: [] },\n  { type: \"error\", name: \"PaymentTooEarly\", inputs: [] },\n  { type: \"error\", name: \"Permit2612AmountMismatch\", inputs: [] },\n  { type: \"error\", name: \"ReentrancyGuardReentrantCall\", inputs: [] },\n] as const;\n\n/**\n * x402ExactPermit2Proxy ABI - settle function for exact payment scheme.\n */\nexport const x402ExactPermit2ProxyABI = [\n  {\n    type: \"function\",\n    name: \"PERMIT2\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"address\", internalType: \"contract ISignatureTransfer\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"WITNESS_TYPEHASH\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"bytes32\", internalType: \"bytes32\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"WITNESS_TYPE_STRING\",\n    inputs: [],\n    outputs: [{ name: \"\", type: \"string\", internalType: \"string\" }],\n    stateMutability: \"view\",\n  },\n  {\n    type: \"function\",\n    name: \"settle\",\n    inputs: [\n      {\n        name: \"permit\",\n        type: \"tuple\",\n        internalType: \"struct ISignatureTransfer.PermitTransferFrom\",\n        components: [\n          {\n            name: \"permitted\",\n            type: \"tuple\",\n            internalType: \"struct ISignatureTransfer.TokenPermissions\",\n            components: [\n              { name: \"token\", type: \"address\", internalType: \"address\" },\n              { name: \"amount\", type: \"uint256\", internalType: \"uint256\" },\n            ],\n          },\n          { name: \"nonce\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n        ],\n      },\n      { name: \"owner\", type: \"address\", internalType: \"address\" },\n      {\n        name: \"witness\",\n        type: \"tuple\",\n        internalType: \"struct x402ExactPermit2Proxy.Witness\",\n        components: permit2WitnessABIComponents,\n      },\n      { name: \"signature\", type: \"bytes\", internalType: \"bytes\" },\n    ],\n    outputs: [],\n    stateMutability: \"nonpayable\",\n  },\n  {\n    type: \"function\",\n    name: \"settleWithPermit\",\n    inputs: [\n      {\n        name: \"permit2612\",\n        type: \"tuple\",\n        internalType: \"struct x402ExactPermit2Proxy.EIP2612Permit\",\n        components: [\n          { name: \"value\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"r\", type: \"bytes32\", internalType: \"bytes32\" },\n          { name: \"s\", type: \"bytes32\", internalType: \"bytes32\" },\n          { name: \"v\", type: \"uint8\", internalType: \"uint8\" },\n        ],\n      },\n      {\n        name: \"permit\",\n        type: \"tuple\",\n        internalType: \"struct ISignatureTransfer.PermitTransferFrom\",\n        components: [\n          {\n            name: \"permitted\",\n            type: \"tuple\",\n            internalType: \"struct ISignatureTransfer.TokenPermissions\",\n            components: [\n              { name: \"token\", type: \"address\", internalType: \"address\" },\n              { name: \"amount\", type: \"uint256\", internalType: \"uint256\" },\n            ],\n          },\n          { name: \"nonce\", type: \"uint256\", internalType: \"uint256\" },\n          { name: \"deadline\", type: \"uint256\", internalType: \"uint256\" },\n        ],\n      },\n      { name: \"owner\", type: \"address\", internalType: \"address\" },\n      {\n        name: \"witness\",\n        type: \"tuple\",\n        internalType: \"struct x402ExactPermit2Proxy.Witness\",\n        components: permit2WitnessABIComponents,\n      },\n      { name: \"signature\", type: \"bytes\", internalType: \"bytes\" },\n    ],\n    outputs: [],\n    stateMutability: \"nonpayable\",\n  },\n  { type: \"event\", name: \"Settled\", inputs: [], anonymous: false },\n  { type: \"event\", name: \"SettledWithPermit\", inputs: [], anonymous: false },\n  { type: \"error\", name: \"InvalidAmount\", inputs: [] },\n  { type: \"error\", name: \"InvalidDestination\", inputs: [] },\n  { type: \"error\", name: \"InvalidOwner\", inputs: [] },\n  { type: \"error\", name: \"InvalidPermit2Address\", inputs: [] },\n  { type: \"error\", name: \"PaymentTooEarly\", inputs: [] },\n  { type: \"error\", name: \"Permit2612AmountMismatch\", inputs: [] },\n  { type: \"error\", name: \"ReentrancyGuardReentrantCall\", inputs: [] },\n] as const;\n","import { toHex } from \"viem\";\n\n/**\n * Extract chain ID from a CAIP-2 network identifier (eip155:CHAIN_ID).\n *\n * @param network - The network identifier in CAIP-2 format (e.g., \"eip155:8453\")\n * @returns The numeric chain ID\n * @throws Error if the network format is invalid\n */\nexport function getEvmChainId(network: string): number {\n  if (network.startsWith(\"eip155:\")) {\n    const idStr = network.split(\":\")[1];\n    const chainId = parseInt(idStr, 10);\n    if (isNaN(chainId)) {\n      throw new Error(`Invalid CAIP-2 chain ID: ${network}`);\n    }\n    return chainId;\n  }\n\n  throw new Error(`Unsupported network format: ${network} (expected eip155:CHAIN_ID)`);\n}\n\n/**\n * Get the crypto object from the global scope.\n *\n * @returns The crypto object\n * @throws Error if crypto API is not available\n */\nfunction getCrypto(): Crypto {\n  const cryptoObj = globalThis.crypto as Crypto | undefined;\n  if (!cryptoObj) {\n    throw new Error(\"Crypto API not available\");\n  }\n  return cryptoObj;\n}\n\n/**\n * Create a random 32-byte nonce for EIP-3009 authorization.\n *\n * @returns A hex-encoded 32-byte nonce\n */\nexport function createNonce(): `0x${string}` {\n  return toHex(getCrypto().getRandomValues(new Uint8Array(32)));\n}\n\n/**\n * Creates a random 256-bit nonce for Permit2.\n * Permit2 uses uint256 nonces (not bytes32 like EIP-3009).\n *\n * @returns A string representation of the random nonce\n */\nexport function createPermit2Nonce(): string {\n  const randomBytes = getCrypto().getRandomValues(new Uint8Array(32));\n  return BigInt(toHex(randomBytes)).toString();\n}\n","import {\n  PaymentPayload,\n  PaymentPayloadV1,\n  PaymentRequirements,\n  SchemeNetworkFacilitator,\n  SettleResponse,\n  VerifyResponse,\n} from \"@x402/core/types\";\nimport { PaymentRequirementsV1 } from \"@x402/core/types/v1\";\nimport { getAddress, Hex, isAddressEqual, parseErc6492Signature, parseSignature } from \"viem\";\nimport { authorizationTypes, eip3009ABI } from \"../../../constants\";\nimport { FacilitatorEvmSigner } from \"../../../signer\";\nimport { ExactEvmPayloadV1 } from \"../../../types\";\nimport { EvmNetworkV1, getEvmChainIdV1 } from \"../../../v1\";\n\nexport interface ExactEvmSchemeV1Config {\n  /**\n   * If enabled, the facilitator will deploy ERC-4337 smart wallets\n   * via EIP-6492 when encountering undeployed contract signatures.\n   *\n   * @default false\n   */\n  deployERC4337WithEIP6492?: boolean;\n}\n\n/**\n * EVM facilitator implementation for the Exact payment scheme (V1).\n */\nexport class ExactEvmSchemeV1 implements SchemeNetworkFacilitator {\n  readonly scheme = \"exact\";\n  readonly caipFamily = \"eip155:*\";\n  private readonly config: Required<ExactEvmSchemeV1Config>;\n\n  /**\n   * Creates a new ExactEvmFacilitatorV1 instance.\n   *\n   * @param signer - The EVM signer for facilitator operations\n   * @param config - Optional configuration for the facilitator\n   */\n  constructor(\n    private readonly signer: FacilitatorEvmSigner,\n    config?: ExactEvmSchemeV1Config,\n  ) {\n    this.config = {\n      deployERC4337WithEIP6492: config?.deployERC4337WithEIP6492 ?? false,\n    };\n  }\n\n  /**\n   * Get mechanism-specific extra data for the supported kinds endpoint.\n   * For EVM, no extra data is needed.\n   *\n   * @param _ - The network identifier (unused for EVM)\n   * @returns undefined (EVM has no extra data)\n   */\n  getExtra(_: string): Record<string, unknown> | undefined {\n    return undefined;\n  }\n\n  /**\n   * Get signer addresses used by this facilitator.\n   * Returns all addresses this facilitator can use for signing/settling transactions.\n   *\n   * @param _ - The network identifier (unused for EVM, addresses are network-agnostic)\n   * @returns Array of facilitator wallet addresses\n   */\n  getSigners(_: string): string[] {\n    return [...this.signer.getAddresses()];\n  }\n\n  /**\n   * Verifies a payment payload (V1).\n   *\n   * @param payload - The payment payload to verify\n   * @param requirements - The payment requirements\n   * @returns Promise resolving to verification response\n   */\n  async verify(\n    payload: PaymentPayload,\n    requirements: PaymentRequirements,\n  ): Promise<VerifyResponse> {\n    const requirementsV1 = requirements as unknown as PaymentRequirementsV1;\n    const payloadV1 = payload as unknown as PaymentPayloadV1;\n    const exactEvmPayload = payload.payload as ExactEvmPayloadV1;\n\n    // Verify scheme matches\n    if (payloadV1.scheme !== \"exact\" || requirements.scheme !== \"exact\") {\n      return {\n        isValid: false,\n        invalidReason: \"unsupported_scheme\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    // Get chain configuration\n    let chainId: number;\n    try {\n      chainId = getEvmChainIdV1(payloadV1.network as EvmNetworkV1);\n    } catch {\n      return {\n        isValid: false,\n        invalidReason: `invalid_network`,\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    if (!requirements.extra?.name || !requirements.extra?.version) {\n      return {\n        isValid: false,\n        invalidReason: \"missing_eip712_domain\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    const { name, version } = requirements.extra;\n    const erc20Address = getAddress(requirements.asset);\n\n    // Verify network matches\n    if (payloadV1.network !== requirements.network) {\n      return {\n        isValid: false,\n        invalidReason: \"network_mismatch\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    // Build typed data for signature verification\n    const permitTypedData = {\n      types: authorizationTypes,\n      primaryType: \"TransferWithAuthorization\" as const,\n      domain: {\n        name,\n        version,\n        chainId,\n        verifyingContract: erc20Address,\n      },\n      message: {\n        from: exactEvmPayload.authorization.from,\n        to: exactEvmPayload.authorization.to,\n        value: BigInt(exactEvmPayload.authorization.value),\n        validAfter: BigInt(exactEvmPayload.authorization.validAfter),\n        validBefore: BigInt(exactEvmPayload.authorization.validBefore),\n        nonce: exactEvmPayload.authorization.nonce,\n      },\n    };\n\n    // Verify signature\n    try {\n      const recoveredAddress = await this.signer.verifyTypedData({\n        address: exactEvmPayload.authorization.from,\n        ...permitTypedData,\n        signature: exactEvmPayload.signature!,\n      });\n\n      if (!recoveredAddress) {\n        return {\n          isValid: false,\n          invalidReason: \"invalid_exact_evm_payload_signature\",\n          payer: exactEvmPayload.authorization.from,\n        };\n      }\n    } catch {\n      // Signature verification failed - could be an undeployed smart wallet\n      // Check if smart wallet is deployed\n      const signature = exactEvmPayload.signature!;\n      const signatureLength = signature.startsWith(\"0x\") ? signature.length - 2 : signature.length;\n      const isSmartWallet = signatureLength > 130; // 65 bytes = 130 hex chars for EOA\n\n      if (isSmartWallet) {\n        const payerAddress = exactEvmPayload.authorization.from;\n        const bytecode = await this.signer.getCode({ address: payerAddress });\n\n        if (!bytecode || bytecode === \"0x\") {\n          // Wallet is not deployed. Check if it's EIP-6492 with deployment info.\n          // EIP-6492 signatures contain factory address and calldata needed for deployment.\n          // Non-EIP-6492 undeployed wallets cannot succeed (no way to deploy them).\n          const erc6492Data = parseErc6492Signature(signature);\n          const hasDeploymentInfo =\n            erc6492Data.address &&\n            erc6492Data.data &&\n            !isAddressEqual(erc6492Data.address, \"0x0000000000000000000000000000000000000000\");\n\n          if (!hasDeploymentInfo) {\n            // Non-EIP-6492 undeployed smart wallet - will always fail at settlement\n            // since EIP-3009 requires on-chain EIP-1271 validation\n            return {\n              isValid: false,\n              invalidReason: \"invalid_exact_evm_payload_undeployed_smart_wallet\",\n              payer: payerAddress,\n            };\n          }\n          // EIP-6492 signature with deployment info - allow through\n          // Facilitators with sponsored deployment support can handle this in settle()\n        } else {\n          // Wallet is deployed but signature still failed - invalid signature\n          return {\n            isValid: false,\n            invalidReason: \"invalid_exact_evm_payload_signature\",\n            payer: exactEvmPayload.authorization.from,\n          };\n        }\n      } else {\n        // EOA signature failed\n        return {\n          isValid: false,\n          invalidReason: \"invalid_exact_evm_payload_signature\",\n          payer: exactEvmPayload.authorization.from,\n        };\n      }\n    }\n\n    // Verify payment recipient matches\n    if (getAddress(exactEvmPayload.authorization.to) !== getAddress(requirements.payTo)) {\n      return {\n        isValid: false,\n        invalidReason: \"invalid_exact_evm_payload_recipient_mismatch\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    // Verify validBefore is in the future (with 6 second buffer for block time)\n    const now = Math.floor(Date.now() / 1000);\n    if (BigInt(exactEvmPayload.authorization.validBefore) < BigInt(now + 6)) {\n      return {\n        isValid: false,\n        invalidReason: \"invalid_exact_evm_payload_authorization_valid_before\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    // Verify validAfter is not in the future\n    if (BigInt(exactEvmPayload.authorization.validAfter) > BigInt(now)) {\n      return {\n        isValid: false,\n        invalidReason: \"invalid_exact_evm_payload_authorization_valid_after\",\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n\n    // Check balance\n    try {\n      const balance = (await this.signer.readContract({\n        address: erc20Address,\n        abi: eip3009ABI,\n        functionName: \"balanceOf\",\n        args: [exactEvmPayload.authorization.from],\n      })) as bigint;\n\n      if (BigInt(balance) < BigInt(requirementsV1.maxAmountRequired)) {\n        return {\n          isValid: false,\n          invalidReason: \"insufficient_funds\",\n          invalidMessage: `Insufficient funds to complete the payment. Required: ${requirementsV1.maxAmountRequired} ${requirements.asset}, Available: ${balance.toString()} ${requirements.asset}. 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console.log(`Successfully deployed smart wallet for ${payerAddress}`);\n          } catch (deployError) {\n            console.error(\"Smart wallet deployment failed:\", deployError);\n            // Deployment failed - cannot proceed\n            throw deployError;\n          }\n        } else {\n          console.log(`Smart wallet for ${payerAddress} already deployed, skipping deployment`);\n        }\n      }\n\n      // Determine if this is an ECDSA signature (EOA) or smart wallet signature\n      // ECDSA signatures are exactly 65 bytes (130 hex chars without 0x)\n      const signatureLength = signature.startsWith(\"0x\") ? signature.length - 2 : signature.length;\n      const isECDSA = signatureLength === 130;\n\n      let tx: Hex;\n      if (isECDSA) {\n        // For EOA wallets, parse signature into v, r, s and use that overload\n        const parsedSig = parseSignature(signature);\n\n        tx = await this.signer.writeContract({\n          address: 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exactEvmPayload.authorization.from,\n      };\n    } catch (error) {\n      console.error(\"Failed to settle transaction:\", error);\n      return {\n        success: false,\n        errorReason: \"transaction_failed\",\n        transaction: \"\",\n        network: payloadV1.network,\n        payer: exactEvmPayload.authorization.from,\n      };\n    }\n  }\n}\n","export { ExactEvmSchemeV1 } from \"../exact/v1\";\n\nexport const EVM_NETWORK_CHAIN_ID_MAP = {\n  ethereum: 1,\n  sepolia: 11155111,\n  abstract: 2741,\n  \"abstract-testnet\": 11124,\n  \"base-sepolia\": 84532,\n  base: 8453,\n  \"avalanche-fuji\": 43113,\n  avalanche: 43114,\n  iotex: 4689,\n  sei: 1329,\n  \"sei-testnet\": 1328,\n  polygon: 137,\n  \"polygon-amoy\": 80002,\n  peaq: 3338,\n  story: 1514,\n  educhain: 41923,\n  \"skale-base-sepolia\": 324705682,\n  megaeth: 4326,\n  monad: 143,\n} as const;\n\nexport type EvmNetworkV1 = keyof typeof EVM_NETWORK_CHAIN_ID_MAP;\n\nexport const NETWORKS: string[] = 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