BuildPaymentRequirementsParams

Defined in: src/x402/payment-requirements.ts:53

Parameters for buildPaymentRequirements.

Properties

amount

readonly amount: string | bigint

Defined in: src/x402/payment-requirements.ts:61

Atomic-unit amount. Accepts bigint (preferred) or a decimal string.

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asset

readonly asset: `0x${string}`

Defined in: src/x402/payment-requirements.ts:57

ERC-20 contract address of the token to be transferred.

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chainId

readonly chainId: 137 | 80002

Defined in: src/x402/payment-requirements.ts:55

Numeric chain ID; converted to the CAIP-2 eip155:{chainId} form.

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extra?

readonly optional extra?: Record<string, unknown>

Defined in: src/x402/payment-requirements.ts:75

Optional explicit extra payload. When omitted and asset is JPYC, kawasekit injects a default { assetTransferMethod: "eip3009", name: "JPY Coin", version: "1" }. For non-JPYC assets extra is required (the client needs at least name / version to reconstruct the EIP-712 domain).

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maxTimeoutSeconds?

readonly optional maxTimeoutSeconds?: number

Defined in: src/x402/payment-requirements.ts:68

Optional. Defaults to X402_DEFAULT_MAX_TIMEOUT_SECONDS.

The maximum wall-clock time the client may take to produce a signed payload after receiving this 402 response.

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payTo

readonly payTo: `0x${string}`

Defined in: src/x402/payment-requirements.ts:59

Recipient wallet address.