Monetize the MCP tools you expose to Claude.
Claude calls external tools through MCP, and x402 lets you charge for each call. These projects connect Claude’s tool use to a payment rail — plugins, skills and servers that earn USDC every time an agent uses them.
Below are the Claude- and MCP-payment projects in the directory.
Real projects from the directory · stars live from GitHub · sorted by popularity. Showing the top 60 of 91.
The agent-native LLM router for OpenClaw. 41+ models, <1ms routing, USDC payments on Base & Solana via x402.
The living ecosystem where AI agents complete tasks through workflow loops, improve through iterative execution, are evaluated by mentor agents or humans in the loop, and turn completed work into reusable work experience and data to improve future agents.
The trust layer for agent-to-agent commerce — natural-language mandates, ERC-7710 delegated permissions, x402 payments, escrow, and dispute resolution as one open, catch-all Agent Skill / Claude Code plugin.
Open Source AI trading agent that operates autonomously across 1000+ markets - Polymarket, Kalshi, Binance, Hyperliquid, Solana DEXs, 5 EVM chains. Scans for edge, executes instantly, manages risk while you sleep. Agent commerce protocol for machine-to-machine payments. Self-hosted. Built on Claude.
Live data for AI agents — search, research, markets, crypto, X/Twitter. Pay-per-call via x402 micropayments.
Open-source MCP servers for Latin American commerce — Pix, NF-e, banking, fiscal, logistics, and messaging across Brazil, Mexico, Argentina, Colombia, Chile, and Peru. MIT, on npm.
Beacon - agent-to-agent pings with optional RTC value attached (BoTTube/Moltbook/RustChain + UDP bus)
Context-aware agentic LLM gateway & router that optimize your agentic workflows with every runs, works with any harnesses, any models, any workflows.
Agent skills and commands for Medusa best practices and conventions.
Autonomous AI BD Agent for SolCex Exchange: 24/7 Cross-Chain Token Scoring & Payments 2026
An operating system built for AI agents — talk to your NixOS server instead of SSH-ing in. Typed, audited tool access with atomic rollback on every change. Research-grade; run it on a disposable box, not production.
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.
Client SDK, Claude plugin and skill framework for the Pinion protocol. x402 micropayments on Base.
Open-source 3D AI agent framework — GLB/glTF avatars with LLM brains, memory, emotions, and autonomous payments. MCP server · x402 · Solana/EVM · Three.js. Embed anywhere as a web component. Character studio, animation gallery, OAuth 2.1. Browser-native.
Give any AI agent a crypto wallet. Agents deserve access to money. Pay x402 APIs, receive USDC, check balances — autonomously. Works with Claude, LangChain, AutoGen, CrewAI, and any MCP client. EVM + Solana.
Bidirectional bridge between Claude Code and OpenAI Codex CLI. Built on Claude Code Channels. Two AI agents, one conversation, real-time web UI.
Verifiable and free cloud compute for AI agents. webMCP + MCP native. Check out our sandboxed Beta + research in the README
Skills & plugins for agentic commerce : UCP, ACP, AP2, A2A, WebMCP, Magento 2, BigCommerce, WooCommerce
Vaaya MCP server — pay-per-call agent superpowers: media & video generation, product demo videos, web search & scraping, deep/market research, GTM & sales enrichment, code sandboxes, browser automation, email, memory. No API keys.
The payment rail AI agents use to get paid without human approval. Optimistic settlement on @solana. Jobs auto-finalize after a challenge period, disputed jobs escalate to a bonded arbitrator. One protocol, any agent.
Multi-agent AI system where autonomous agents collaborate, compete, and execute tasks in a shared, observable environment
Cross-vendor agent-to-agent protocol — Claude, Codex, and Gemini communicate via file-based P2P messaging.
MCP server and plugin for Sperax Protocol – USDs, SPA, veSPA & Demeter on Arbitrum and BNB Chain. Listed on Anthropic's official MCP Registry.
154 Web3 MCP tools for Claude Code, custody-free. Plus an agent wallet prompt injection can't drain: per-tx, daily, and on-chain (ERC-4337) spending caps the model can't bypass. EVM + Solana + Tron DEX/DeFi, perps, prediction markets, contract deploy + audit.
Off-chain credit ledger + hire marketplace for AI agents. Ed25519-signed envelopes, atomic settlement, hire-and-release escrow. https://voidly.ai/pay
Visual workflow editor for building node-based AI agent workflows with drag-and-drop interface, A2A integration, and real-time execution
Bitcoin-native MCP server for AI agents: BTC/STX wallets, DeFi yield, sBTC peg, NFTs, and x402 payments.
Three bounded agents (Analyst, SDR, Auditor) that do agency-priced B2B work locally. Each refuses out of lane and names the right agent. SQLCipher-encrypted vault keeps the record. Built for the AI Agent Economy Hackathon (AgentHansa, Apr 25, 2026).
Zero latency! Zero code change! Empower your AI agent with payment ability via x402 protocol! (Openclaw, Claude code, Cursor, Langchain, CrewAI, AutoGen...)
MCP Server for Lightning Faucet - Give your AI agent a Bitcoin wallet
Cross-model adversarial code review for Claude Code. Claude-written code gets reviewed by Codex; Codex-written code gets reviewed by Claude. Different models, different blind spots — let them fight. 跨模型对抗式 Code Review Claude Code skill。Claude 写的代码让 Codex 审，Codex 写的让 Claude 审。不同模型有不同盲区，让它们互相找茬。
Claude Desktop extension that signs x402 USDC payments on Stellar (Soroban) and Base (EVM).
23 open-source Agent Skills for Claude Code and Codex: multi-agent orchestration, A-F code review, AI evals, CI ship-gates, design, copy, SEO, and creator workflows.
Permission layer for AI agents — wallet signing, vault access, budgets, and human approvals.
Hardware-secured Solana wallet, trading terminal, and agent identity layer for AI agents. Jupiter DEX swaps, meme coin trading, DeFi yield, trading bots, on-chain identity, encrypted agent-to-agent messaging, service discovery. Keys in Apple Secure Enclave.
Connect OpenClaw agents across teams and enterprises to share, discover, and collaborate on custom automation tools securely and efficiently.
MCP server that turns Claude into a Fantasy Premier League analyst. 11 tools: captain picks, transfer suggestions, player comparison, hit calculator, chip strategy, differentials, fixtures, price predictions, live points, squad scout. pip install fpl-intelligence
Static security scanner for MCP servers, agent skills & plugins (68 patterns). In the official MCP Registry: io.github.eltociear/skill-audit-mcp. Also a pay-per-call x402 API.
MCP server for ERC-8004 agent discovery + x402 payment. No smart account, no relay — just EOA signing. Works with Claude Code, OpenClaw, Cursor, Cline.
Autonomous AI BD agent for SolCex Exchange — 24/7 token scanning across 19 chains, honest 100-point scoring, x402 USDC micropayments, and automated outreach. Powered by Claude Opus, deployed on Hetzner. Built by a chef through pure AI conversation.
A bank account for AI agents. Give your AI agent its own wallet with spending controls — no credit card required. Built with Claude Code for the Cerebral Valley 'Built with Opus 4.6' hackathon.
x402 payment facilitator — verifies and settles EIP-3009 micropayments multichain. v2 facilitator.
💧 OpenClaw skill for multi-chain batch crypto payments, payroll, swaps, invoices & more via Spraay x402 gateway
Claude agent for use with the Mangrove Developer API & MCP Server.
Ephemeral agent-to-agent communication relay for agentic CLIs (localhost or intra-LAN). MCP.
Open-source marketplace for Claude Code plugins. Publish in 2 HTTP requests, earn 80% in USDC. Install: /plugin marketplace add techgangboss/agentstore
The most comprehensive x402 payments skill for AI coding agents. Build paid APIs on Base & Solana with USDC. Includes Sentinel Payment Router.
MCP server for Botwallet — Give any AI agent a wallet via Model Context Protocol. FROST threshold signing, x402 paid APIs, spending guard rails.
🛠 Enable seamless on-chain skill calls with automated x402 micropayments using the Pinion OS SDK and skill server framework.
MCP server for x402 Service Discovery — continuously growing catalog of services, real-time quality signals, facilitator-compat checks. For Claude, Cursor, Windsurf.
MCP server for Azeth — smart accounts, payments, reputation, and discovery tools for AI agents
MCP server for AskClaude — pay-per-query Claude AI via x402 micropayments
Knowledge marketplace where AI agents autonomously buy human expertise
AGIRAILS Claude Code skill for aitmpl.com — AI agent payments, ACTP escrow, x402 instant, USDC on Base L2
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.
TypeScript SDK for Azeth — smart accounts, x402 payments, reputation, and service discovery
We currently track 91 Claude projects in the directory, drawn from open-source repositories building on x402 and agent payments. The list above is sorted by GitHub stars and updates as new projects are submitted and crawled.
x402 is an open standard for paying for an HTTP resource: a server replies with HTTP 402 and payment terms, the client pays (usually USDC), and the request is fulfilled. The Claude projects above implement or build on this flow.
Submit it from the Submit page. We crawl the repository, classify it, and it appears in the relevant category pages — including this one if it matches.