FastAPI middleware for Machine Payments Protocol (MPP). Add 402 Payment Required challenges, secure sessions, and receipt validation to your APIs for AI agents.
fastapi-mpp is an early-stage Python project in the AI payments / x402 ecosystem, focused on agent-economy, ai-agents, autonomous-agents, fastapi. It currently has 3 GitHub stars and 1 forks, and sits alongside related tools like crewai-x402, langchain-x402, awesome-mpp.
CrewAI integration for x402 payments - autonomous agent crews that pay for APIs with USDC
LangChain integration for x402 payments - let AI agents pay for APIs with USDC automatically
The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.