Ethereum-Trading

This MCP server is a Rust-based Ethereum trading assistant that exposes tools for querying balances, fetching token prices, and simulating token swaps on Ethereum. It uses ethers-rs for on-chain interactions and rmcp to define the MCP server. The available tools are get_balance, get_token_price, and swap_tokens. You can interact with the server via JSON-RPC calls over HTTP, for example by posting to http://127.0.0.1:8080 with a JSON-RPC payload. The server authenticates and executes simulations using a provided Ethereum RPC endpoint (configured via environment variables) and a wallet private key for signing simulated transactions.

Prerequisites:

• Rust toolchain (rustup)
• Git
• A Ethereum RPC endpoint (Infura/Alchemy) and a wallet private key for simulations

Install and run:

1. Install Rust: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
2. Clone the repository: git clone <repository-url> cd <repository-name>
3. Create a .env file at the project root and set: INFURA_PROJECT_ID=your_infura_project_id PRIVATE_KEY=your_wallet_private_key
4. Build in release mode: cargo build --release
5. Run the server: cargo run --release The MCP server will start and listen on 127.0.0.1:8080.

Environment variables are used to manage secrets. Ensure INFURA_PROJECT_ID and PRIVATE_KEY are kept secure and not committed to version control. Supported features include:

• get_balance: query ETH and ERC20 balances for a wallet
• get_token_price: fetch current token prices in USD via Chainlink price feeds
• swap_tokens: simulate a Uniswap V2 token swap Limitations to be aware of:
• Token support is currently hardcoded (ETH, DAI, USDC) for price and swap operations
• Swaps are simulated and do not execute on-chain without proper signing configuration and network access
• Error handling is basic in this prototype If you run into port issues, ensure no other service is bound to 127.0.0.1:8080 and verify that your .env values are loaded by the application.