API Integration
| Server | Language | Stars | Downloads |
|---|---|---|---|
| Wynncraft Wynncraft MMO player + guild + leaderboard + item DB lookups. | — | - | - |
| wzzotero-mcp-server Simplified MCP server for accessing Zotero libraries by collection name | Python | - | - |
| X1-BaaS Scraping API Stealth scraping API for AI agents. Clean Markdown from any URL. x402 crypto payments. | — | - | - |
| x402 Checker (AI Nock) Free check; paid report $0.05; check_batch/who/md/headers/json/sanctions/domain/email/bizdays $0.01. | — | - | - |
| x402 Discovery MCP Discover x402 APIs by capability, price & trust. Powered by x402Scout. | — | 2 | - |
| x402engine MCP server connecting AI agents to 108 pay-per-call APIs through x402: 72 LLMs plus image, video, audio, web, code, crypto, wallet, travel, and IPFS. Pay per request in USDC on Base or Solana, or USDm on MegaETH. | — | - | - |
| x402 Ethereum RPC Ethereum mainnet JSON-RPC paid per call in USDC on Base. No account, no API key: the wallet pays. | — | - | - |
| x402 Facilitator Proxy Multi-tenant HTTP 402 infrastructure gateway and stdio MCP server for machine payments. | TypeScript | - | - |
| x402-farm 64 x402 tools: cheap LLM $0.002, web+news search, French residential-IP scraping, FR/UK/US data. | — | - | - |
| x402 Gateway — Inspect Paid API Terms Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend. | — | - | - |
| x402 JSON Repair Pay-per-call JSON repair + JSON Schema validation for AI agents (USDC on Base, x402). | — | - | - |
| x402-market Let AI agents pay-per-call for any HTTP API via x402 on Base mainnet. One tool: pay_and_call. | TypeScript | - | - |
| x402 MCP Starter Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint. | — | - | - |
| x402 Micro Tollgate x402 HTTP 402 + MCP paywall: charge USDC per agent call. Self-host via npx or Docker. | TypeScript | - | - |
| x402nano Machine-payable prediction-market briefs and probability-change monitoring for AI agents. | — | - | - |
| x402 Pay — USDC API Payment Helper Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status. | — | - | - |
| x402 Preflight Inspect and validate an x402 endpoint before an autonomous agent spends USDC. | — | - | - |
| x402 Seller Pay-per-call MCP tools (crypto/DeFi data, web reading, AI tasks) in USDC over x402 on Base. | TypeScript | - | - |
| x402-seller — rug protection & safe-alpha for trading agents Rug-check & launch radar for trading agents: composite honeypot score, EVM+Solana, keyless x402. | — | - | - |
| x402-snap Pay-per-call browser rendering and x402 marketplace ranking for AI agents, billed via USDC. | — | - | - |
| x402 Triage MCP MCP server for no-payment x402 surface triage, 402 Index health checks, and paid review handoff. | TypeScript | - | - |
| x402 Trinity Give an agent a wallet. Pays for x402 resources within hard limits. Base + USDC, gasless. | TypeScript | - | - |
| x402-vend — WebIntel Pay-per-call web & EU business intelligence for AI agents (x402 USDC on Base). 11 tools. | — | - | - |
| x402 Web Extract Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments. | — | - | - |
| x711 Pay-per-use tool API for AI agents with free tier, x402 USDC micropayments, and API key access. | — | - | - |