Routes blockchain transactions through your actual browser wallet instead of asking for private keys in config files. Exposes MCP tools for EVM chains (MetaMask, Rabby) via EIP-6963 and TRON via TronLink. You get connect_wallet, send_transaction, sign_message, sign_typed_data, plus balance lookups that work without opening a browser. Each signing operation spawns a local HTTP server and opens an approval page where you review the transaction in your wallet extension. Works with Ethereum, Polygon, Arbitrum, Base, and other EVM chains plus TRON mainnet and testnets. Reach for this when you want Claude to interact with smart contracts but need to approve every action yourself.
claude mcp add --transport stdio nikicat-mcp-wallet-signer uvx mcp-wallet-signer