The index for machine payments.
AI agents are learning to buy, sell, and transact. This index tracks every MCP package powering that shift — payments, protocols, wallets, and commerce tools — ranked by real developer adoption from npm and GitHub.
x402 umbrella package — 92k weekly downloads
x402 payment protocol — HTTP 402 for the internet. 22k weekly.
x402 EVM chain implementation (Base, Ethereum) — 18k weekly
x402 Solana implementation — 3.9k weekly
x402 protocol extensions
Official Shopify developer MCP server
Fetch wrapper with automatic x402 payment — 7k weekly
Stripe tools for LangChain, Vercel AI SDK, and agent frameworks
Official Stripe MCP server for AI agents
x402 Express.js middleware for servers — 5.7k weekly
Axios wrapper with automatic x402 payment — 3k weekly
Shopify Polaris UI components for AI assistants — 3.4k weekly
Express middleware for x402 payments — 3.4k weekly
Smart LLM router with x402 micropayments — 30+ models, one wallet
Community-built Shopify MCP integration
ATXP agent payment client — pay-per-use MCP tools. 5.3k weekly.
Natural Payments SDK — AI agent payment infrastructure
x402 protocol MCP server integration
Wallet identity and encrypted DMs for OpenClaw agents — Sphere SDK
Ra Pay MCP server for AI agent payments
Payment infrastructure for MCP servers
MCP server for Kobana Payment API (billets, Pix, DARF)
Agent discovery, marketplace, and micropayments on BSV blockchain
Moon Banking API MCP server
Crossmint agent wallet for Solana — smart wallet integration for AI agents
Native EVM wallet plugin for OpenClaw agents
MCP server for agent-to-agent payment marketplace
First MCP payment gateway for Cronos blockchain
Your first AI agent payment in 60 seconds — x402 starter
Machine-to-machine wallet on IOTA — bots hold funds, pay each other, trigger smart contracts
Shopify Storefront API MCP server
Solana AI agent payment processing — non-custodial USDC
Declarative policy engine for AI agent payment control
Multi-chain wallet with trading and DEX tools for AI agents
PayPal agent toolkit for AI-powered payments
NEAR blockchain MCP integration
DeFi analytics and intelligence MCP
Square payments MCP server
Coinbase agent toolkit for onchain AI agents
Cross-chain swaps for AI agents
Crypto price data MCP server
Payman AI agent payment MCP server
Xero accounting/invoicing MCP server for AI agents
Unified MCP server for Stripe + Paystack payments
USDC/USDT payment MCP server for AI agents