All in one cryptocurrency payments for WordPress - Lite version

Add custom cryptocurrency withdrawal method to Dokan plugin

One-command local development environment for HTTP 402 Payment Required protocol with blockchain payments (EIP-3009 USDC)

Official documentation source code for CicaPay API, including guides and code examples

One line of code to accept digital dollars. HTTP-native x402 payment protocol for blockchain payments with Express middleware and Axios client support.

PayChain is a decentralized payment system built on the Internet Computer (IC) blockchain. The system consists of two main components

Official documentation for XPayLabs. Crypto payment infrastructure, TRON USDT payments, x402 payments, APIs, SDKs, and merchant integration guides.

Native-Web3 Shopping Experience. Features wallet connection, network enforcement (Sepolia), and seamless crypto payments without a backend

TradeHub blockchain internal transfer used as Payment Processor

Integration of payments gateway

V2 smart contracts that power the Ajira Pay Finance real-time token streaming Dapp

A zero-dependency TypeScript library for decoding and handling X402 Payment Required

PayDeFi - Send and Receive Money On The Blockchain. Frontend code.

Client-side verification SDK for x402 payment headers on Base (L2 on Ethereum)

A TypeScript SDK for handling X402 payment protocol on Base and other Layer 2 networks. Automatically handles payment flows when accessing paid APIs that return 402 Payment Required responses.

Agent-to-Agent USDC Payments Demo - OpenClaw USDC Hackathon 2026

🚀 Develop and monetize APIs using the complete X402 payment protocol for Solana, designed for easy integration and streamlined transactions.