All in one cryptocurrency payments for WordPress - Lite version

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

Add custom cryptocurrency withdrawal method to Dokan plugin

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

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

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

TradeHub blockchain internal transfer used as Payment Processor

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

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

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

Integration of payments gateway

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.

x402 payment and escrow layer for autonomous agents. HTTP 402 negotiation, USDC smart escrow, message payments, and agent-to-agent settlement on Base L2. Plug into any AI agent or framework.

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

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.

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