polygon-mcp

# Polygon MCP Server A Model Context Protocol (MCP) server that provides onchain tools for Claude AI, allowing it to interact with the Polygon PoS blockchain. ## Features - Call contract functions on Polygon PoS - Get ERC20 token balances - Transfer ERC20 tokens - Get current gas prices ## Installation 1. Clone this repository: ```bash git clone https://github.com/your-username/polygon-mcp.git cd polygon-mcp ``` 2. Install dependencies: ```bash npm install ``` 3. Build the project: ```bash npm run build ``` ## Configuration Create a `.env` file in the root directory with the following variables: ``` SEED_PHRASE="your twelve word seed phrase here" ``` ## Usage ### Running the server ```bash npm start ``` ### Using with Claude To use this MCP server with Claude, you need to add it to your MCP settings file: For VSCode Claude extension: ```json { "mcpServers": { "polygon": { "command": "node", "args": ["/path/to/polygon-mcp/build/index.js"], "env": { "SEED_PHRASE": "your twelve word seed phrase here" }, "disabled": false, "autoApprove": [] } } } ``` For Claude desktop app: ```json { "mcpServers": { "polygon": { "command": "node", "args": ["/path/to/polygon-mcp/build/index.js"], "env": { "SEED_PHRASE": "your twelve word seed phrase here" }, "disabled": false, "autoApprove": [] } } } ``` ## Available Tools ### call_contract Call a contract function on Polygon PoS. Parameters: - `contractAddress`: The address of the contract to call - `functionName`: The name of the function to call - `functionArgs`: The arguments to pass to the function - `abi`: The ABI of the contract - `value` (optional): The value of MATIC to send with the transaction ### erc20_balance Get the balance of an ERC20 token on Polygon PoS. Parameters: - `contractAddress`: The address of the contract to get the balance of ### erc20_transfer Transfer an ERC20 token on Polygon PoS. Parameters: - `contractAddress`: The address of the contract to transfer the token from - `toAddress`: The address of the recipient - `amount`: The amount of tokens to transfer ### get_gas_price Get the current gas price on Polygon PoS. ## License MIT