Payments over sound. Proving x402's primitive (EIP-3009) works on any medium.

🚀 The Rosetta Stone for Agentic Payments - One vending machine, 5+ protocol implementations. Get from zero to working agentic payments in 5 minutes.

x402 micropayments is payment platform for using x402 (x402 API, x402 integration)

Zero-backend donation hub for verifiable GitHub repos and wallet QuickLinks, powered by the x402&x402x

x402 payment gateway integration demo for x402 infrastructure, using x402 protocol.

solana x402 Payment sdk for crypto payments without complexity. Built with x402 protocol.

The x402 protocol enables instant, programmable micropayments on the internet. Credit Cards are high friction, hard to accept, have minimum payments that are far too high, and don't fit into the programmatic nature of the internet.

A practical demo of a cryptocurrency-based video paywall using the x402 Payment Protocol, enabling secure on-chain USDC micropayments for premium video access. Built with Express.js and easily deployable for testing on the Base Sepolia network.

x402 payment infrastructure for both humans and machines

HTTP 402 payment protocol implementation for r1x

Archived. Template moved to adk-ts-samples repo.

x402 client implementation (x402-fetch), HTTP 402 server implementation and Model Context Protocol (MCP) for P-Link.io : pay, send and receive money with agents

X402PESA: Global payments via x402 protocol. Send, spend and stream money anywhere in the world with fees so small they feel like a typo, in under a second, fully onchain and chain agnostic.

Payment-gated content and API endpoints powered by x402 protocol on Base network. Access premium content via browser or integrate with AI agents through our API endpoints.

x402 payment on solana

A self-contained demo for the x402 protocol (seller & buyer) built with Hono.

Machine Trust Protocol (MTP) — The trust layer of the machine civilization. A foundational, protocol-agnostic framework enabling verifiable machine identity, proof-of-work, and settlement across Web2, Web3, and AI systems.

x402 Payment Gateway Demo – A complete crypto payment gateway using the x402 payment protocol. Includes USDC paywall, Express.js middleware integration, Base Sepolia support, and a working Web3 video paywall example. Perfect for developers building Web3 monetization systems with x402.

AutonomiX is a Web3 platform combining x402 micropayments and ERC-8004 agent NFTs for decentralized AI agents, on-chain reputation, and secure paywalled APIs on Base Sepolia.

A ROS 1 (Noetic) package that turns robot capabilities into paid API endpoints - using Solana’s x402 protocol for pay-to-access control — and includes tools for making and verifying payments to external services.