Gives Claude direct access to Ethereum transaction primitives without needing a node connection. You can build and sign both legacy and EIP-1559 transactions, estimate gas costs, work with RLP encoding, and handle ERC-20 transfers. It's part of a five-server toolkit that separates wallet operations, keystore management, signing, transactions, and validation into distinct tools. The transaction server specifically exposes 15 tools covering everything from building unsigned transactions to parsing calldata and serializing for broadcast. Useful when you need to construct transactions offline or want an AI assistant to help with transaction debugging, gas estimation, or building complex contract interactions before sending them on-chain.
claude mcp add --transport stdio io.github.nirholas-transaction-mcp-server -- uvx transaction-mcp-server