◆ 24K LABS THE GOLD‑402 INDEX

02 MCP Servers 61

Model Context Protocol servers — the sockets an agent plugs into. These are the one shelf where a GET is the wrong knock: JSON-RPC answers POST and 405s everything else. We probe them the way a client would.

— an architecture diagram —

61 of 505 curated services sit on this shelf. 59 carry a dated knock; most recent . A knock is one HTTP request that got an answer — not a delivery test. Read a stamp as reachable and speaks the protocol, never as worth the money.

  • 24K Labs API 143 pay-per-call endpoints on one x402 v2 server, no account or API key: AI code work (explain, debug, revi…
  • 402-mcp Payment-rail-agnostic x402 MCP client.
  • 402Found Marketplace of 18 specialized AI agent microservices: PII scrubbing, hallucination detection, prompt inject…
  • AgentFund US Economic, SEC & On-Chain Data 21 tools over US government data and public chain state: Treasury yield curve, CPI, PCE, jobs, GDP, retail…
  • agentpay-mcp Native x402 client-side payment execution inside the agent loop.
  • agentsvc.io MCP 20 pay-per-call utility tools: screenshots (Playwright), OCR (Tesseract), PDF generation, webpage reader, w…
  • ALTER MCP Identity infrastructure MCP for the AI economy.
  • Andreax Remote MCP server with 54 pay-per-call AI tools: prompt compression, inference, web/PDF read, OCR, vision,…
  • APIbase.pro MCP gateway with 263+ tools from 74 providers, x402 USDC micropayments on Base.
  • APIMesh MCP 16-tool MCP server for web analysis: SEO, security headers, Core Web Vitals, domain availability, email sec…
  • Apiosk MCP gateway to discover, pay for, execute, and publish x402 APIs.
  • Apollo Intelligence MCP 26-tool MCP server: intelligence feeds, crypto, OSINT, DeFi, proxy, and search.
  • Arbitova Escrow + transparent AI arbitration (N=3 LLM majority vote).
  • AskClaude MCP Pay-per-query Claude AI.
  • Azeth MCP x402 payment tool (`azeth_pay`), ERC-8004 trust registry discovery, on-chain reputation scoring, payment ag…
  • BlockLabs Shop MCP — Mounts the BlockLabs physical-goods shop as MCP tools: paid product search, free order quotes, order placem…
  • blockrun-mcp Live data MCP for AI agents: search, research, markets, crypto, X/Twitter.
  • BotIndex MCP 17-tool signal intelligence: sports odds, crypto correlations, token graduations (Zora/Hyperliquid/Metaplex…
  • botwire-mcp The Bot Wire as MCP tools: 57 real-time primary-source wires (SEC EDGAR, Federal Register, federal courts,…
  • BridgeNode MCP x402-gated AI inference MCP server: chat completions + model listing across 38 models, automatic USDC payme…
  • Cerebrus Pulse MCP Real-time crypto intelligence: technical analysis (RSI, EMAs, Bollinger Bands), sentiment, funding rates fo…
  • Cheapest Grocery Basket — Whole-list grocery optimization: send a shopping list and a ZIP, get what it costs at each nearby store and…
  • Cleared Index MCP MCP server (`route_gateway`, check, trust, witness) so agents query attested inventory and route before pay.
  • EntRoute MCP Discover and call 350+ verified x402 API endpoints across 110+ capabilities.
  • Fry x402 MCP MCP server for the fry.farm x402 API.
  • Harvey Budget Agent spending management: budget tracking, ROI analysis, spend approval.
  • Harvey Intel Solana token rug pull detection (DrainBrain ML ensemble), trading signals, social intelligence.
  • Harvey Tools Web scraping, screenshots, structured data extraction, code review, content generation, sentiment analysis.
  • Harvey Verify Post-transaction outcome verification using LLM-as-judge.
  • Human Pages MCP 31-tool MCP for the open directory AI agents use to hire humans for real-world tasks.
  • InstaDomain Domain registration accepting x402.
  • Intelligence Aeternum Monetized MCP server marketplace.
  • isocast-mcp Per-signal Polymarket weather-market data across 37 cities, with market URLs and live bucket odds.
  • JubJub MCP 65-tool MCP server for media publishing, cross-platform analytics, automated on-chain royalty splits.
  • lso-mcp 46 LoneStarOracle data tools: token and wallet risk, contract audits, whale tracking, DeFi and stablecoin r…
  • MCP Security Snapshot Server Pay-per-call HTTP security header scanning.
  • MetaMask MCP x402 Official MetaMask MCP server with x402 payment integration.
  • moltalyzer-mcp Polymarket and AI-agent-community intelligence: order-book microstructure movers, whale hold-to-resolution…
  • MoltGuard Agent trust scoring (0-100), Sybil detection, Polymarket integrity, Ed25519 Verifiable Credentials.
  • OrbitWan.io MCP 24-tool Wanchain explorer MCP server from an independent archive node: addresses, transactions, tokens, val…
  • PayBot MCP Claude and AI agents make autonomous x402 payments.
  • PayCrow Escrow protection for autonomous agent payments.
  • PayPerByte MCP 15-tool MCP server for the PayPerByte x402 gateway: pay-per-call USDC data feeds and KYA screening/reasonin…
  • Pylon MCP 20-tool MCP server: web extraction, search, translation, code execution, image generation, email, and more.
  • PYTHIA Oracle Oracle MCP server.
  • Razorpay MCP Server Official MCP server from one of India's largest payment processors.
  • Recall Kitchen Search food/product/vehicle recalls.
  • Scout MCP Multi-source search across code, academic, social, community platforms.
  • ShieldAPI MCP 9-tool security MCP: password breach, email breach, domain/IP reputation, URL safety, full security scan, p…
  • SolSigs MCP 16-tool Solana blockchain intelligence MCP server: DEX prices, arbitrage, wallet scoring, token launches, N…
  • Spraay MCP 60+ tool MCP server for multi-chain DeFi payments: batch sends, payroll, token swaps, bridge, escrow, AI in…
  • Stack AI x402 Platform for monetizing MCP servers.
  • Stockfilm MCP 217,000+ authentic vintage 8mm home movie clips (1930s-1980s) restored in 4K.
  • ToolOracle x402 entitlement gateway with 10 intelligence products and 90+ MCP tools: RankOracle (SEO), ShopOracle, Mem…
  • TweetClaw Real-time X (Twitter) data.
  • vindex-mcp Vehicle data over x402: VIN decode with warranty terms, recalls, reliability, and US/Canada purchase-cost e…
  • x402 Service Discovery MCP MCP for discovering 251+ x402-payable services with quality signals (uptime, latency, trust scores).
  • x402 Wallet for Claude Desktop Native Claude Desktop extension (.mcpb one-click install).
  • x402-mcp Vercel's `paidTool` primitive — add an x402 paywall to any MCP tool with one wrapper.
  • x402engine MCP 74 pay-per-call API tools: 44 LLMs, image/video generation, crypto data, web search, code execution, TTS, t…
  • x402search MCP Search 14,000+ x402-enabled HTTP APIs by keyword.