MCP: The Web3 Integration Protocol Designed for Large Language Models

MCP (Model-Context Protocol) is an open protocol that provides a standardized way for large language models to securely access external tools, data sources, and services. Unlike traditional plugin systems, MCP adopts a client-server architecture, achieving seamless integration between models and external systems through standardized protocol interfaces.

Core Advantages of MC

1. Standardized Interface: Define a unified protocol specification to avoid redundant development and integration solutions.
2. Security: Ensure secure access to external tools through strict permission control and sandbox mechanisms.
3. Scalability: Supports various types of tools, from simple API calls to complex data processing workflows.
4. Interoperability: Clients supporting MC can use compatible services to achieve cross-platform compatibility.

Application Scenarios of Web3 and MCP

In the Web3 space, MC Protocol can provide large language models with rich blockchain interaction capabilities:

• Asset Inquiry: Check token balance, transaction history
• On-chain operations: sending transactions, deploying contracts, invoking smart contracts
• DeFi Integration: Interact with decentralized exchanges, lending protocols, liquidity mining, and other DeFi applications
• Cross-chain operation: supports multi-chain asset management and cross-chain transfers
• NFT Management: Query, Transfer, Trade NFT Assets

This article will build a simple Web3 MC service using Node.js and TypeScript, explaining the working principles and best practices of the MC.

Create Project

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

Writing Server

1. Instantiate provider
2. Write tool logic
3. Start the service and add error handling

Debugging Services

Package the js output and execute modelcontextprotocol/inspector for debugging.

Improve the logic and reference it in the IDE

Improve more logic and methods, such as supporting multiple EVM networks, querying gas, sending transactions, querying token information, and other common methods. After packaging, it can be referenced in IDEs that support MCP integration.

Usage Example

In the AI assistant of the IDE, you can perform the following operations using natural language:

1. Query the balance of a specified address on a specific network

2. Execute the transfer operation

Future Outlook

The combination of MCP and Web3 opens up a new world full of possibilities for us. Directions that can be explored in the future include:

• Support for more blockchains (such as Bitcoin, Solana, Tron)
• Integrate cross-chain functionality to achieve cross-chain asset exchange
• DeFi protocol integration
• NFT market operations
• Complex cross-chain asset management

These complex blockchain operations can be achieved through simple conversations, greatly simplifying the way users interact with the Web3 world.