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 protocol extensions
x402 Solana implementation — 3.9k weekly
Official Shopify developer MCP server
Stripe tools for LangChain, Vercel AI SDK, and agent frameworks
x402 Express.js middleware for servers — 5.7k weekly
Fetch wrapper with automatic x402 payment — 7k weekly
Official Stripe MCP server for AI agents
Express middleware for x402 payments — 3.4k weekly
Axios wrapper with automatic x402 payment — 3k 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
Shopify Polaris UI components for AI assistants — 3.4k weekly
Ra Pay MCP server for AI agent payments
MCP server for Kobana Payment API (billets, Pix, DARF)
Payment infrastructure for MCP servers
Machine-to-machine wallet on IOTA — bots hold funds, pay each other, trigger smart contracts
MCP server for agent-to-agent payment marketplace
Moon Banking API MCP server
Crossmint agent wallet for Solana — smart wallet integration for AI agents
First MCP payment gateway for Cronos blockchain
Agent discovery, marketplace, and micropayments on BSV blockchain
Shopify Storefront API MCP server
Multi-chain wallet with trading and DEX tools for AI agents
Wallet identity and encrypted DMs for OpenClaw agents — Sphere SDK
Declarative policy engine for AI agent payment control
Your first AI agent payment in 60 seconds — x402 starter
Solana AI agent payment processing — non-custodial USDC
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
Native EVM wallet plugin for OpenClaw agents