CoinGecko
CoinGecko's official public MCP server as a WARM teammate: live prices, market caps, volumes, historical charts, DeFi/onchain pool data, and NFT collection stats across a million-plus assets — usable from birth, no account, no key, nothing to pair. The trade-off is named honestly: calls ride CoinGecko's shared public rate limits, so a burst of questions can be told to slow down. Every answer is a live read from the official server; the agent never writes anything, anywhere.