Code-only MCP servers — agent-tools.cloud

MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.

Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.

402-crypto

github.com/Benrolfe1/402-crypto
updated this year

Curated BTC market data for AI agents via MCP. x402 autonomous payment on Arbitrum. 36 products, 7 sources, multi-timeframe analysis, reliability scoring. https://402-crypto.com
x402-trinity

github.com/devmster/x402-trinity
active

Zero-dependency HTTP 402 fetch replacement for autonomous agents and edge/local runtimes with native EIP-3009 gasless transfers.

npm BUSL-1.1
alpha402

github.com/monsterbyurbed11/alpha402
active

HTTP 402 Real-Time On-Chain Alpha API for Autonomous AI Agents

MIT
path402

github.com/b0ase/path402
updated this year

The $402 Protocol — MCP server for AI agents to discover, evaluate, and acquire tokenized content

npm MIT
base-http402-extractor-api

github.com/psicossz29-netizen/base-http402-extractor-api
active

Autonomous HTTP 402 Web-to-Markdown API & MCP Server powered by Base L2 micropayments (0.05 USDC).
dollar402-mcp-server

github.com/b0ase/dollar402-mcp-server
updated this year

MCP server for the $PATH protocol — AI agent tools for discovering, evaluating, and acquiring tokenised content via $402

npm MIT
@haven_ai/mcp

github.com/d-hinders/haven-ai
active

Haven MCP server for local, non-custodial AI-agent payments — pay x402 (HTTP 402) APIs within on-chain-enforced budgets.

npm MIT
bristlecone-logic

github.com/Bristlecone2026/bristlecone-logic
active

Stateless HTTP 402 micropayment gateway and pre-socket runtime defense engine for autonomous AI agents on Arc Layer 1.
tab

github.com/paidwithtab/tab
active

Give your agents spending power. Pay-per-request APIs over HTTP 402 and x402, capped by signed mandates, settled in USDG on Robinhood Chain.

npm MIT
x402-backend

github.com/Wintyx57/x402-backend
updated this year

API marketplace powered by HTTP 402 protocol — AI agents pay per call with USDC on Base. 69 native endpoints, on-chain payment verification, multi-chain (Base + SKALE).

MIT ★ 4
@402index/mcp-server

github.com/ryanthegentry/402index
updated this year

MCP server for 402 Index — search 15,000+ paid API endpoints across L402, x402, and MPP protocols with real-time health monitoring

npm MIT
xenarch

github.com/xenarch-ai/xenarch-sdks
updated this year

CLI for Xenarch — non-custodial x402 MCP server for AI agents. Claude, Cursor, LangChain and CrewAI pay HTTP 402–gated APIs with USDC on Base L2.

npm MIT
x402-trinity

github.com/devmster/x402-trinity
active

Zero-dependency HTTP 402 fetch replacement for autonomous AI agents. EIP-3009 gasless USDC on Base. Buyer, seller, and MCP server.

npm NOASSERTION ★ 3
agent-x402-paywall-mcp

github.com/csoai-org/agent-x402-paywall-mcp
updated this year

Agent x402 Paywall MCP — wraps Coinbase x402 (HTTP 402) so agents pay per-call without Stripe accounts. On-chain settlement via USDC (Base/Polygon/Solana) or Lightning. The plumbing for the agent economy. By MEOK AI Labs.

pypi MIT
paidwithtab

github.com/paidwithtab/tab
active

Give your agents spending power. tab prices any HTTP API in a JSON spec and gets it paid per request over HTTP 402 and x402, spending capped by signed mandates, settled in USDG on Robinhood Chain. Zero runtime dependencies.

npm MIT
@vulinh1704/spend-guard

github.com/vulinh1704/spend-guard
active

A spending guard for AI agents that pay for things: budgets, payee allowlists, price-spike checks and human approval before any payment leaves the wallet. Pays HTTP 402 (x402) paywalls in USDC on Circle's Arc and in NEAR.

npm MIT
@agentgate-builder/x402fix

https://agentgate-source.pages.dev/x402-x402fix/
active

x402 endpoint doctor for sellers and agent builders: point it at any paid x402 URL and get a graded list of what will break payments or Bazaar / x402scan listing (402 on GET/HEAD/POST, CORS, v2 header + v1 body, CAIP-2, USDC asset + EIP-712 domain, Solana

npm MIT
x402-facilitator-proxy

github.com/seob5285-alt/x402-facilitator-proxy
updated this year

"An open, multi-tenant HTTP 402 infrastructure gateway and Model Context Protocol (MCP) server daemon built for autonomous AI agents. Enables programmatic 1% platform-fee split settlements in USDC on Base L2 with plug-and-play templates for Express.js, LangChain (TS), and CrewAI (Python)."
host402

github.com/drpjohnson/host402
active

Autonomous cloud hosting and Reverse-402 API monetization platform for AI agents (USDC on Base)
agentgate-mcp

github.com/teddiesloco/agentgate-mcp
active

Zero-subscription machine-payable AI utility microservices (scraping, prompt firewall, Solana audit, domain intel) via HTTP 402 on Base & Solana

MIT
402index-mcp-server

github.com/ryanthegentry/402index-mcp-server
updated this year

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

MIT ★ 3
vivarium-mcp

github.com/77svene/vivarium-mcp
updated this year

MCP server exposing VIVARIUM autonomous pay-per-call machine services (x402, USDC on Base) as agent tools; auto-pays 402 challenges via EIP-3009
aim-network-m2m-hub

github.com/Johnmannen/aim-network-m2m-hub
active

Autonomous M2M Data & Quantitative Intelligence API Hub payable via HTTP 402 (x402 protocol) in USDC on Base Mainnet
coinbase-agentkit-azcon

github.com/azconcomercial-cloud/coinbase-agentkit-azcon
active

Official Coinbase AgentKit Action Provider for Photovoltaic Solar Physics, ANEEL/EDP-ES Electricity Tariffs & Brazilian CNPJ Intelligence with HTTP 402 (x402) micropayments on Base.
x402-data-engine

github.com/MaaBlock/x402-data-engine
active

Stateless x402 HTTP 402 micro-API on Cloudflare Workers for Web3 security, Aave liquidations, and DEX slippage settling gaslessly in Base & Polygon USDC
@agentmetal/mcp

github.com/agentmetal/mcp
active

MCP server for AgentMetal: an AI agent can discover, pay (USDC via x402 or card), provision, SSH into, and run commands on its own Linux VPSes over HTTP 402. No signup.

npm MIT
practical-data-tools

github.com/awai-mm/practical-data-tools
active

Zero-Dependency MCP Server (JSON-RPC 2.0), Deterministic Solvers (Subset-Sum, Monte Carlo Inventory, Solidity Invariant Audit, JSON/CSV Repair) & HTTP 402 (L402 / x402) B2A Gate
bugscan-mcp

github.com/Phantom-Kid1412/bugscan-mcp
active

AI-Powered Java/Spring Boot code review API with Alipay AI Pay support.

MIT
edge-diagnostics-x402

github.com/seob5285-alt/edge-diagnostics-x402
updated this year

Edge-based network diagnostic utility checking host latency, gated via x402 payment rails for ai agents.

MIT
@spendctl/mcp-server
active

MCP server exposing spendctl to agents: pay, await_approval, withdraw_approval, check_budget, list_receipts. Holds no keys.

npm SEE LICENSE IN LICENSE
x402-shipping

github.com/donnaraising222/x402-shipping
active

Buy shipping labels across carriers in two paid API calls—rate-shop, purchase, and receive base64 PDFs instantly.

Apache-2.0
inflow-cli

github.com/inflowpayai/inflow-cli
active

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

npm MIT ★ 10
@mseep/x402engine-mcp

github.com/agentc22/x402engine-mcp
updated this year

Agent-friendly MCP wrapper for x402engine with automatic capped USDC payments on Base and Solana

npm MIT
@arispay/mcp

github.com/stevemilton/payagent-mcp
updated this year

MCP server for ArisPay-delegated x402 USDC payments. Use with Claude Desktop, Cursor, or any MCP client — no private keys in your process.

npm MIT
@nirholas/x402-mcp-commerce

github.com/nirholas/x402-mcp-commerce
active

MCP server that gives Claude/GPT agents commerce tools — each tool call pays an upstream x402 endpoint and returns its artifact

npm Apache-2.0
mcp

github.com/x402-video/mcp
active

MCP server for x402video.com: pay-per-call AI video generation over x402 (USDC on Base). No accounts, no API keys.

MIT
x402dispatcher

github.com/jegamboafuentes/x402dispatcher
active

x402dispatcher is a Bazaar aggregator for AI agents. It discovers paywalled APIs from the Coinbase x402 catalog, wraps them as MCP tools, settles USDC micropayments on Base, and keeps a cashflow ledger so you can monitor the business.
alpha402-mcp

github.com/monsterbyurbed11/alpha402
active

DexScreener Token Alpha, GoPlus Anti-Honeypot Smart Contract Security Audits, Safe New Pairs & Polymarket Arbitrage MCP Server for AI Agents (3 Free Daily Calls + Coinbase x402 & Prepaid Base USDC)

npm MIT
gate402-mcp

github.com/pgalyen1987/gate402-mcp
active

MCP server for Gate402: pay-per-call agent APIs over x402. Open-model LLM inference, Base trading data, SEC filings and web scraping. 20 tools, free tier, no signup.

npm MIT ★ 1
buyforme-mcp

github.com/arispay-inc/arispay-x402
active

MCP server alias for @arispay/payagent-mcp. Configure your Claude Desktop / Cursor / Windsurf MCP server as `npx buyforme-mcp` to let the model pay any x402 URL via ArisPay delegated custody.

npm MIT
kraken-crypto-signals

github.com/Nikoble1926/kraken-crypto-signals
active

MCP server + x402 pay-per-call API: signed BUY/SELL/HOLD crypto signals with confidence for Kraken pairs, on-chain track record. USDC on Base, no API keys.

★ 1
payforapi

github.com/saymon-agent/payforapi
active

Saymon RU Data API — Russian-language data endpoints for AI agents: EGRUL/INN company check, Cyrillic search, research, Russian Post tracking. Pay-per-call via x402 in USDC (Base). 🌏 EN/中文/日本語/한국어

MIT ★ 1
@piprail/mcp

github.com/piprail/piprail
active

PipRail MCP server — hand any MCP client a budget-bound x402 payment wallet. Local-only, no backend, no custody; the spend policy is enforced before any on-chain send, so the model literally cannot overspend.

npm MIT
@melis-ai/x402-tools-mcp

github.com/mizukaizen/x402-tools-mcp
updated this year

22 x402 pay-per-call utility tools for AI agents — scrape, validate, embed, store, moderate, notify, convert, prevent loops. No accounts, no API keys. USDC on Base via the x402 protocol.

npm MIT
@arispay/payagent-mcp

github.com/arispay-inc/payagent-mcp
active

One coherent USDC payment product for AI agents: pay x402 APIs on Base, Solana, and BNB Chain with spend mandates, receipts, and idempotency. Eight tools: setup, discover, inspect, pay, balance, history, check_payment_signal, open_bank_account. Use with C

npm MIT
ari-mcp-server

github.com/antmanbuilds/ari
updated this year

MCP server that stops AI agents from overpaying. Drops into Claude Desktop, Cursor, Continue, Windsurf, Zed, ChatGPT desktop, and Gemini CLI to give any agent live fair-market-value lookups, a green/amber/red prepay verdict, and cryptographically-signed (Ed25519) receipts for every x402 / MPP / agentic-payment quote.

pypi Apache-2.0