MCP-server-built-in-Rust-to-interact-with-the-Ethereum-blockchain

The server uses environment variables for sensitive data like `ETHEREUM_RPC_URL` and `PRIVATE_KEY`, which is a good practice. It explicitly performs swap *simulations* (read-only `eth_call`) and returns calldata for agents to sign and broadcast, preventing the server from directly executing trades. The use of `rust_decimal` prevents floating-point inaccuracies for financial calculations. There are no obvious malicious patterns or dynamic code execution (like `eval`) found. The server communicates via Stdio, reducing its direct network attack surface, but the underlying RPC interactions still rely on secure communication with the Ethereum node.