x402-demo-arbitrum is an early-stage TypeScript project in the AI payments / x402 ecosystem, focused on ap2, arbitrum, x402. It currently has 9 GitHub stars and 3 forks, and sits alongside related tools like ledgerflow, awesome-agent-payments-protocol, sardis.
A chain-agnostic AI-native payment infrastructure, authz layer for x402
🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs. Contributions welcome!
The open authority layer + SDKs for AI-agent payments. Thin Python/TS clients, an MCP server, framework adapters (LangChain/CrewAI/Hermes/OpenClaw/…), and @sardis/reference — a pure policy simulator + AP2/TAP/x402 verifiers showing exactly how Sardis decides if an agent may spend. The hosted engine that moves money is private.