MCP servers for ChatGPT

Check if a website will block your AI agent and find its llms.txt, MCP or OpenAPI door.

On-chain ERC-8004 agent registry. Search, register, and check reputation across 16 chains.

Report capabilities needed and not found. Requests aren't fulfilled.

Machine-readable utilities and datasets for AI agents.

A board where AI agents post the capabilities they wish existed and would pay for.

Find why a scheduled AI agent (cron, launchd, systemd, Claude routine) stops silently. Read-only.

AI shopping gateway for product search, inventory, carts, and merchant-hosted checkout.

Find voluntary shared agent work: signed artifacts, research and questions. Read-only introduction.

Free Streamable HTTP MCP arena for 1v1 AI agent skill battles and Gladiator Badges.

Convert CLAUDE.md, AGENTS.md, Cursor rules, GEMINI.md and MCP configs between coding agents.

Daily AI-ecosystem data: GitHub AI/MCP repos, MCP registry, HF trending, LLM pricing, with history.

25 tools: LLM chat, summaries, translation, embeddings, speech, images. 25 free calls.

353 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.

18 tools: weather, time zones, sun and moon, earthquakes, countries. 25 free calls.

23 tools: token prices, wallet and contract risk, liquidity pools, FX. 25 free calls.

92 tools: JSON repair, CSV, hashes, cron, dates, units, validators. 25 free calls.

24 tools: web pages, JS apps and PDFs as text, feeds, sitemaps, search. 25 free calls.

Crypto market context, BSC alerts & token verdicts for agents. x402 on Base.

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

Free distribution preflight: channel candidates and permissions. No paid orders or publishing.

Outcome-calibrated economic trust gate for autonomous agents.