Meson Cross-Chain Transaction MCP Server

A Meson cross-chain transaction MCP (Model Context Protocol) server implemented with Deno and TypeScript, helping users transfer assets conveniently between different blockchains.

Features

• Cross-chain asset transfer based on Meson Protocol
• Conversational cross-chain transaction experience using MCP standard
• Integration of complete cross-chain transaction process: transaction preparation, signature submission, status query
• Support for mainnet and testnet environments
• Private key configuration using environment variables for security
• Based on Deno runtime, no complex dependency configuration required

Requirements

• Deno 1.37.0 or higher
• Ethereum compatible private key (for transaction signing)

Installation and Running

1. Clone the repository

git clone <repository-url>
cd meson-mcp

1. Set environment variables

# Linux/MacOS
export MESON_PRIVATE_KEY=your_private_key

# Windows
set MESON_PRIVATE_KEY=your_private_key

1. Run the MCP server

deno run --allow-net --allow-env main.ts

MCP Configuration Guide

You can use the Meson cross-chain transaction MCP service by adding the following configuration to your MCP configuration file:

"meson_mcp": {
  "command": "npx",
  "args": [
    "deno",
    "run",
    "--allow-env",
    "--allow-net",
    "--allow-read",
    "jsr:@demcp/meson-mcp"
  ],
  "env": {
    "MESON_PRIVATE_KEY": "0x1234567890abcdef",
    "MESON_USE_MAINNET": "true"
  }
}

Configuration Parameters

• command: Execution command, here using npx to run Deno

• args: Command argument list

  • deno: Specifies using the Deno runtime
  • run: Deno's run command
  • --allow-env: Permission to access environment variables
  • --allow-net: Permission for network access
  • --allow-read: Permission for file reading
  • jsr:@demcp/meson-mcp: Package name loaded from JSR (JavaScript Registry)

• env: Environment variable configuration

  • MESON_PRIVATE_KEY: Your Ethereum-compatible private key for transaction signing (replace the example value with your own key)
  • MESON_USE_MAINNET: Set to "true" to use the mainnet, set to "false" or omit to use the testnet

Note: For security reasons, ensure your private key is not leaked or made public. In production environments, it's recommended to use secure methods to manage and store private keys.

Main Functions

The MCP server provides three core tools:

1. Prepare Cross-Chain Transaction (prepareSwap)

Prepares a cross-chain transaction and generates data for signing.

Parameters:

• fromChain: Source chain ID
• toChain: Destination chain ID
• fromToken: Source token symbol
• toToken: Destination token symbol
• amount: Swap amount
• fromAddress: Sender address
• recipient: Recipient address (optional, defaults to sender)

Returns:

• Price information
• Encoded transaction data
• Data to be signed

2. Sign and Execute Transaction (executeSwap)

Signs the transaction data and submits it to the Meson network.

Parameters:

• encoded: Encoded transaction data
• signingRequest: Data to be signed (containing message and hash)
• fromAddress: Sender address
• recipient: Recipient address

Returns:

• Transaction ID
• Transaction result information

3. Query Transaction Status (checkSwapStatus)

Checks the status of a submitted transaction.

Parameters:

• swapId: Transaction ID

Returns:

• Transaction status
• Detailed information

Usage Example

Here's a complete cross-chain transaction flow example:

1. Set environment (testnet/mainnet)

I want to perform a cross-chain transaction on testnet

1. Prepare cross-chain transaction

Please prepare a transaction from Ethereum Sepolia testnet to transfer 10 USDC to Arbitrum Sepolia, 
my address is 0x1234...abcd

1. Sign and execute transaction

Please sign and submit the transaction prepared above

1. Query transaction status

Please check the status of the transaction I just submitted

Important Notes

• Private keys are only stored in environment variables and will not be sent to any external services
• Transaction signing is completed locally, and signed data is submitted through the Meson API
• Mainnet transactions involve real assets, please be sure to verify transaction details
• Testnet is a safe testing environment, new users are recommended to try on testnet first
• Ensure the private key has enough native tokens (ETH, etc.) to pay for transaction fees

Supported Chains and Tokens

This MCP server supports all blockchains and tokens supported by the Meson protocol, including but not limited to:

• Ethereum and its testnets
• Arbitrum
• Avalanche
• BSC
• Optimism
• Polygon
• Solana
• And many other EVM and non-EVM chains

For specific supported chains and tokens, please refer to the Meson official documentation.

Technical Details

• Implemented based on Model Context Protocol
• Using Deno as the runtime environment
• Cross-chain transactions through Meson API
• Transaction signing using ethers library

License

MIT