MCP: An Open Protocol Empowering Large Language Models

MCP (Model-Context Protocol) is an open protocol that provides standardized access to external resources for large language models. It adopts a client-server architecture, achieving seamless integration between the model and external systems through a unified interface, with advantages such as standardization, high security, strong scalability, and good interoperability.

In the Web3 field, MCP can provide rich blockchain interaction capabilities for large language models, including asset queries, on-chain operations, DeFi integration, cross-chain operations, and NFT management. This article will explain its working principles and best practices by building a simple Web3 MCP service.

Create Project

1. Create a project folder and initialize
2. Install the necessary dependencies.
3. Configure TypeScript
4. Modify package.json configuration

Writing Server

Taking the getBalance function of the Sepolia testnet as an example:

1. Register an account, obtain the RPC URL, instantiate the provider
2. Write tool logic
3. Start the service and add error handling

Debugging Service

Package the JS products and execute modelcontextprotocol/inspector for debugging.

Improve functionality and integrate it into Cursor

Expand more features, such as supporting multiple EVM networks, querying gas, sending transactions, querying token information, etc. Integrate the packaged services into Cursor, which is an intelligent IDE that integrates AI technology and supports MC integration.

Usage Example

In the chat of Cursor, you can interact using natural language:

• Query address balance
• Execute ETH transfer

Future Outlook

The combination of MCP and Web3 opens up a new world full of possibilities for us. In the future, we can consider:

• Support for more blockchains (such as Bitcoin, Solana, Tron)
• Achieve cross-chain operations
• Integrate more DeFi protocols
• Develop complex cross-chain asset management features

These features are expected to be realized through simple conversations, providing users with a more convenient blockchain interaction experience.