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)

Building the real-world payment layer for Pi. Scan QR and spend Pi in everyday transactions.

💻 Spin up a complete local x402 payment server to test the HTTP 402 Payment Required protocol with blockchain payments effortlessly.

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 source code for CicaPay API, including guides and code examples

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

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

Integration of payments gateway

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

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

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

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.

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

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