Polygon MCP Server

What is Polygon MCP Server?

A Model Context Protocol (MCP) server that provides seamless integration with the Polygon blockchain network. It enables AI assistants to interact with Polygon through a standardized interface, offering comprehensive tools for wallet operations, smart contract deployment, L2 bridging, DeFi interactions, and transaction simulations. The server acts as a bridge between AI systems and the Polygon blockchain, handling the complexities of blockchain interactions.

How to use Polygon MCP Server?

Requires Node.js v18+, npm or yarn, a Polygon wallet private key, and RPC endpoints for Polygon Mainnet and Amoy Testnet. After installing dependencies with npm install and configuring a .env file with RPC URLs, API keys, and private key, start the server with npm start. The server exposes MCP tools like get-address, list-balances, transfer-funds, deploy-contract, and simulate-transaction.

Key features of Polygon MCP Server

• Wallet operations: get address, list balances, transfer funds
• Smart contract deployment and verification on Polygonscan
• L2 bridge operations: deposit and withdraw ETH/ERC20 tokens
• DeFi interactions: QuickSwap and Uniswap V3 DEX swaps
• Polymarket prediction market betting and position tracking
• Transaction simulation and gas estimation with EIP-1559 support

Use cases of Polygon MCP Server

• AI assistants managing wallet balances and transferring tokens on Polygon
• Automated smart contract deployment and verification for dApp development
• Bridging assets between Ethereum and Polygon via L2 bridge tools
• Executing token swaps and adding liquidity on QuickSwap or Uniswap V3
• Simulating transactions to preview effects before signing

FAQ from Polygon MCP Server

What dependencies are required to run Polygon MCP Server?

Node.js v18 or higher, npm/yarn, a Polygon wallet private key, and RPC endpoints for Polygon Mainnet and Amoy Testnet are required.

Does Polygon MCP Server work with testnets?

Yes, it supports Amoy testnet for testing. Users can request testnet POL via the get-testnet-pol faucet tool.

Where does wallet private key data live?

The private key is loaded from the PRIVATE_KEY environment variable in the .env file. The README emphasizes using secure key management in production.

Are there any known limitations with bridge operations?

The current bridge implementation uses a mock version of MaticPOSClient due to ESM compatibility issues. Bridge operations may not function correctly until a proper ESM-compatible implementation is created.

What transport does Polygon MCP Server use?

The server communicates via the Model Context Protocol (MCP) standard. Authentication relies on the configured wallet private key for signing transactions.