Function parsePaymentRequirement

src/services/x402/client.ts:36–50

(
  headerValue: string,
)

 * Parse the X-Payment-Required header from a 402 response.
 */
export function parsePaymentRequirement(
  headerValue: string,
): PaymentRequirement {
  try {
    const parsed = JSON.parse(headerValue) as PaymentRequirement
    if (!parsed.scheme || !parsed.network || !parsed.maxAmountRequired || !parsed.payTo) {
      throw new Error('Missing required fields in payment requirement')
    }
    return parsed
  } catch (error) {
    throw new Error(
      `Invalid x402 payment requirement header: ${error instanceof Error ? error.message : String(error)}`,
    )
  }
}

/**
 * Validate that a payment requirement is within configured limits.