x402_core

Core protocol definitions and shared logic for the x402 payment protocol.

This package is blockchain-agnostic and defines the common vocabulary and behavior used by x402 clients and resource hosts.

Note: Most users should use the x402 package, which exports x402_core with added multi-chain support.

Contents

• Protocol models and constants (PaymentRequirement, PaymentPayload, etc.)
• Core client components (X402Client)
• Core server components (X402ResourceServer, HttpFacilitatorClient, etc.)
• Framework-agnostic primitives for protecting paid resources
• Interfaces for implementing payment schemes