🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs. Contributions welcome!

A curated list of awesome Agentic commerce, Universal Commerce Protocol (UCP), Agentic payments protocol (AP2) resources, tools, and implementations.

Let your AI agent pay for any MCP/API per call — card-funded, spend-capped, no crypto. `npx create-lemon-mcp` to start.

This is the first AP2 (Agent Payments Protocol) Simulated Message Processing System that is able to process and settle AP2 payments

Open-source payment orchestration for AI agents. 17 packages — 14 routing strategies, 8 payment connectors (MPP, x402, Visa, Stripe, PayPal, UPI, credits, mock), policy engine, cascade failover, unified receipts, paid MCP tools. The routing and experience layer for machine-to-machine commerce.

ElizaOS plugin for XyncPay. Cross-protocol payment translation for autonomous AI agents.

AgentNexus2 is Base-native infrastructure for agent-to-agent payments, built around small, deterministic USDC escrow and settlement flows. It is designed for developers integrating autonomous agents and services that require verifiable, non-custodial payment coordination. AgentNexus2 is not a consumer application or marketplace.

Policy-controlled USDC payment vaults for autonomous AI agents on Arc testnet.

AAIP: Protocol for verifiable AI agent execution using Proof-of-Execution (PoE). Infrastructure layer for trustworthy multi-agent systems.

JavaScript/TypeScript samples for the Agent Payments Protocol (AP2)

Cycles runtime authority guard for Google AP2 (Agent Payments Protocol) — reserve, commit, release around AP2 payment mandates to prevent mandate reuse, double-spend, and concurrent checkout attempts.

Lightning SDK for AI Agent Payments — non-custodial Bitcoin settlement with preimage proof

P402 Payment Protocol

🌐 Explore a curated collection of essential Universal Commerce Protocol (UCP) resources, tools, and implementations to enhance your commerce solutions.