MPP Projects — Machine Payments Protocol

TypeScript Interface for Machine Payments Protocol

Alephant is an open-source AI Agent Gateway for routing, tracking, and controlling LLM usage across AI agents, members, and workflows, and for publishing agent capabilities as paid endpoints with x402 and MPP payment rails.

Specifications for the Machine Payments Protocol - powered by the "Payment" HTTP authentication scheme

Rust SDK for the Machine Payments Protocol

Website for the Machine Payments Protocol

A universal framework designed to allow agents and other utilities to transparently make machine payments using web infrastructure.

Building blocks for Agentic payments (x402, MPP, AP2) for TypeScript, Rust, Go, Python, Ruby, PHP, Lua, Kotlin and Swift.

Building blocks for Agentic payments (x402, MPP, AP2) for TypeScript, Rust, Go, Python, Ruby, PHP, Lua, Kotlin and Swift.

A Machine Payments Protocol (MPP) project in the AI-agent payments ecosystem.

Command-line wallet and HTTP client for the Tempo blockchain, with built-in Machine Payments Protocol support.

Python SDK for the Machine Payments Protocol

Skills & plugins for agentic commerce : UCP, ACP, AP2, A2A, WebMCP, Magento 2, BigCommerce, WooCommerce

The neutral micropayment router for autonomous agents. A single HTTP client that intercepts '402 Payment Required', routes across x402, L402, and MPP, persists credentials as recoverable assets, enforces per-envelope budgets, and emits a structured trace.

Agent skills for building, shipping, and growing software products

Agentic finance infrastructure.

The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.

Train nanoGPT on Modal GPUs, paid with stablecoins via MPP. No API keys. No signup. Just HTTP 402.

Remlo — Borderless payroll and agent-payment infrastructure. Tempo MPP + Solana/Base x402, Bridge fiat rails, ERC-8004/SAS reputation.

Solana extension for MPP

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

MPP-powered VPS hosting - AI agents pay for compute via Machine Payments Protocol

Go SDK for the Machine Payments Protocol

Official TypeScript/Node.js SDKs for the InFlow payments platform - x402 and MPP (Machine Payments Protocol) integration for sellers and buyers.

A wallet for your agents to onboard and pay. Agentic MPP / x402 payments from your machine - CLI + MCP server.

A neutral landscape analysis of AI agent payment protocols (x402, MPP, L402, Google AP2, Visa TAP + ICC, Mastercard Agent Pay, Amex ACE, Google/Shopify UCP, OpenAI ACP, and others). Maintained by Genesis Software Group, Copenhagen. Updated April 2026. CC BY 4.0.

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

curl for x402 and MPP paid APIs. CLI + MCP proxy that auto-pays any endpoint on Base, Solana, and Tempo. Zero crypto code on the buyer side.

Universal MCP gateway for AI agents — 1108 tools, 307 providers. One endpoint (https://apibase.pro/mcp), pay-per-call with x402 USDC on Base + MPP USDC on Tempo.

Canonical Swift SDK for the Machine Payments Protocol (MPP) — pay for and charge for machine-to-machine API calls over HTTP 402.

Unified payment execution layer for Stellar x402, MPP charge, MPP session behind one client.pay() call

APIMesh — 23 pay-per-call web analysis APIs + 16-tool MCP server with autonomous API generation. Security audits, SEO, tech stack detection. x402 + Stripe MPP payments.

The x402 Service Encyclopedia — Every service ranked, reviewed, and documented. Community knowledge base for the AI agent economy.

Real-time NYC transit API for AI agents. Citi Bike, subway, bus ETAs in one API — $0.02/check via x402 or MPP. Verifiably deployed on EigenCloud.

Zcash Machine Payments Protocol — private payments for AI agents

APIMesh — 23 pay-per-call web analysis APIs + 16-tool MCP server with autonomous API generation. Security audits, SEO, tech stack detection. x402 + Stripe MPP payments.

Payment infrastructure for AI agents. Reference implementation: x402 + MPP + fiat.

Build paid APIs, agents, tools & data feeds on the DNA x402 hosted rail. Templates, Degen Mode, no backend custody. Public Beta.

Production-grade ZK compliance for AI agent payments on Solana. Real Circom Groth16 proofs gate spending limits, sanctions, and time rules without leaking payment details. Two rails: HTTP 402 (USDC/USDT/aUSDC) and Stripe MPP, both with on-chain attestation.

Machine Payments Protocol integration for OpenClaw — one wallet, every AI service, no API keys

A reverse proxy that wraps any existing HTTP API with MPP payment gating — zero code changes on the origin API.

FastAPI middleware for Machine Payments Protocol (MPP). Add 402 Payment Required challenges, secure sessions, and receipt validation to your APIs for AI agents.

World Agent Kit Library for the Machine Payments Protocol

Agent-powered flower delivery via the Machine Payments Protocol (MPP).

MCP server for 402 Index: discover 15,000+ paid API endpoints across L402, x402, and MPP

ASG Card community skill for building Machine Payments Protocol flows on Stellar

The extraction API that shows its work. Product data extraction with per-field confidence scoring and extraction provenance. REST API + MCP server. 50 free calls/month.

A CLI tool and web dashboard for inspecting, testing, and debugging Machine Payments Protocol flows. Think "Postman for HTTP 402" — it visualizes the full challenge-response-receipt cycle, simulates payment failures, validates receipt signatures, benchmarks session channels, and generates test reports.

Solana SPL token payments for the Machine Payments Protocol (MPP) via HTTP 402.

The first React Native library for the Open Wallet Standard (OWS) — policy-gated autonomous payments on Solana using USDC, with Stripe MPP / x402 HTTP 402 support.

Rust SDK for the Machine Payments Protocol (MPP) on Movement Network

Elixir implementation of the Machine Payments Protocol (MPP) — HTTP 402 payment middleware for AI agents and machine-to-machine commerce

Any API becomes a Lightning toll booth in one line. L402 middleware for Express, Hono, Deno, Bun, and Workers.

A Machine Payments Protocol (MPP) project in the AI-agent payments ecosystem.

Managed Solana settlement and streaming sessions for the Machine Payments Protocol

⚡ Autonomous AI agent economy — agents hire agents, pay each other, and get work done. Built on MPP (Machine Payments Protocol) by Stripe.

Sardis Guard Intelligence Plane — Financial intelligence for AI agent payments via MPP (Tempo Hackathon)

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.

Agent finance on institutional rails — MPP payments, USDCx transfers, MCP server, CLI

Tempo Agent Chalengger

Hybrid x402 + Stripe machine payments: agents pay USDC via x402, Spraay executes multi-chain DeFi ops, Stripe settles fiat for merchants