Boar blockchain MCP (advanced)

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required - just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global

Provides access to Ethereum and Polygon blockchain data through Infura's JSON-RPC APIs, offering 35+ tools for querying balances, transactions, blocks, gas prices, and smart contract data with support for both read-only operations and raw transaction broadcasting.

Provides semantic search and natural language querying of Ethereum blockchain data including addresses, transactions, blocks, tokens, and smart contracts with vector similarity matching and LLM-guided filtering across 150+ searchable parameters.