multichain-mcp is one MCP server that gives AI agents native access to Stacks, Celo, and Base from a single npm package, with no RPC keys required. 5 production-ready tools across 3 chains: → get_balance and get_prices: Free → get_portfolio and prepare_transfer: Pro ($9/mo) → deploy_token on Celo and Base: Team ($29/mo) All write operations return unsigned transactions: non-custodial by design. Works with Claude Desktop, Cursor, and Windsurf out of the box.