xrpl-mcp-service

XRPL MCP Service

A Model Context Protocol (MCP) server providing comprehensive access to the XRP Ledger (XRPL). This service enables AI models to interact with XRPL through standardized endpoints.

Features

Account Information

• xrpl_account_info - Basic account details
• xrpl_account_balances - XRP and token balances (human-readable)
• xrpl_account_lines - Trust lines
• xrpl_account_offers - Active trading offers
• xrpl_account_nfts - NFT holdings
• xrpl_account_tx - Transaction history

Decentralized Exchange

• xrpl_order_book - View order book for currency pairs
• xrpl_market_price - Get current market prices
• xrpl_amm_info - Automated Market Maker information

NFT Operations

• xrpl_nft_offers - View NFT buy/sell offers

Trust Lines & Payments

• xrpl_set_trust_line - Establish new trust lines
• xrpl_remove_trust_line - Remove existing trust lines
• xrpl_payment_channels - Payment channel information
• xrpl_find_path - Payment path finding
• xrpl_deposit_auth - Check payment authorization

System

• xrpl_server_info - Node status and information
• xrpl_submit_tx - Submit signed transactions

Setup

1. Create a .env file:

XRPL_NODE_URL=https://xrplcluster.com

2. Install dependencies:

pip install xrpl-py fastapi uvicorn python-dotenv

3. Run the server:

uvicorn main:app --host 0.0.0.0 --port 8000 --reload

API Usage Examples

Get Account Info

POST /call-tool/xrpl_account_info
{
  "account": "rsuUjfWxrACCAwGQDsNeZUhpzXf1n1NK5Z"
}

Get Account Balances

POST /call-tool/xrpl_account_balances
{
  "account": "rsuUjfWxrACCAwGQDsNeZUhpzXf1n1NK5Z"
}

Set Trust Line

POST /call-tool/xrpl_set_trust_line
{
  "wallet_seed": "sXXXXXXXXXXXXXXXXXXXX",
  "currency": "USD",
  "issuer": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B",
  "limit": "1000"
}

Get AMM Info

POST /call-tool/xrpl_amm_info
{
  "asset": {
    "currency": "XRP"
  },
  "asset2": {
    "currency": "USD",
    "issuer": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
  }
}

Get Market Price

POST /call-tool/xrpl_market_price
{
  "base_currency": {
    "currency": "XRP"
  },
  "quote_currency": {
    "currency": "USD",
    "issuer": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
  }
}

Project Structure

├── main.py              # FastAPI application entry point
├── tools/
│   ├── __init__.py
│   ├── register_tools.py # Tool registration
│   └── xrpl_tools.py    # XRPL endpoint implementations

Key Components

1. xrpl_tools.py

   • Core XRPL interaction functions
   • Async implementation with event loop handling
   • Error handling and response formatting

2. register_tools.py

   • MCP tool registration
   • Endpoint mapping and configuration

Future Enhancements

1. AMM (Liquidity Pool) Operations

   • Create pools
   • Add/remove liquidity
   • Vote on pool parameters

2. Advanced Trading

   • Create/cancel offers
   • Automated trading functions
   • Price alerts

3. NFT Operations

   • Mint NFTs
   • Create/accept offers
   • Collection management

Common Issues

1. Async Event Loop: If you see "asyncio.run() cannot be called from a running event loop", check the async implementation in xrpl_tools.py

2. Rate Limiting: Consider implementing rate limiting for production use

Contributing

1. Fork the repository
2. Create a feature branch
3. Implement your changes
4. Submit a pull request

Important Notes

• Always use "validated" ledger for production
• Secure wallet seeds and private keys
• Monitor transaction fees
• Test thoroughly on testnet first

Resources

• XRPL Documentation
• MCP Protocol Docs
• FastAPI Documentation

License

MIT