@402kit/core

Core SDK for HTTP 402 (x402) payments and entitlements. Essential types, schemas, and utilities for building 402kit-powered applications with micropayment support.

Installation

``bash
npm install @402kit/core
`

Features

- HTTP 402 Payment Required protocol support
- x402 facilitator protocol implementation
- TypeScript types and Zod validation schemas
- 402kit ecosystem foundation
- Zero runtime dependencies
- Cryptographically secure nonce and UUID generation using Web Crypto API

Quick Start

`typescript
import { validateChallenge, encodeChallengeBody } from '@402kit/core';

// Validate HTTP 402 payment challenges
const isValid = validateChallenge(challenge);
``

License

Apache-2.0