Add crypto MCP servers: CoinGecko, DeFiLlama, Etherscan

[friendlygeorge]

Crypto/DeFi MCP Servers

Three verified crypto data MCP servers, all on npm, MIT licensed, indexed on Glama:

Server	Description	Install
coingecko-mcp-server	CoinGecko API — token prices, market data, trending. Key-less, 18 tools	npm i -g coingecko-mcp-server
defillama-mcp-server	DeFiLlama API — TVL, yields, protocols across 200+ chains. Key-less, 12 tools	npm i -g defillama-mcp-server
etherscan-mcp-server	Etherscan/BaseScan — contract verification, tx history, ABI. 1 free key	npm i -g etherscan-mcp-server