declare module "@x402/core" {
  export interface PaymentRequirements {
    scheme: string;
    network: string;
    maxAmountRequired: string;
    resource: string;
    description: string;
    mimeType?: string;
    payTo: string;
    maxTimeoutSeconds?: number;
    outputSchema?: unknown;
    extra?: Record<string, unknown>;
  }

  export function exact(
    payTo: string,
    amount: string | number,
    extra?: Record<string, unknown>
  ): PaymentRequirements;
}

declare module "@x402/core/types" {
  export interface PaymentPayload {
    x402Version: number;
    scheme: string;
    network: string;
    payload: unknown;
  }
}

declare module "@x402/core/verify" {
  export function verifyPayment(
    payment: string,
    requirements: import("@x402/core").PaymentRequirements,
    opts?: { facilitatorUrl?: string }
  ): Promise<{ valid: boolean; error?: string }>;
}

declare module "@x402/evm" {
  export function getEvmPaymentSchemes(): unknown[];
}