MCP3 Monorepo

What is MCP3 Monorepo?

MCP3 Monorepo contains implementations of the Model Context Protocol (MCP) for different blockchain networks. It provides tools and services for blockchain data access and interaction, including packages for Sui, Ethereum, and data integrations like DexScreener and DeFiLlama.

How to use MCP3 Monorepo?

Install and configure via the CLI tool npx @mcp3/sui. For Claude Desktop, add the configuration to your claude_desktop_config.json using the command npx -y @mcp3/sui start -t. Use the CLI with npx @mcp3/sui --help to list all commands, or npx @mcp3/sui tool <tool-name> to run a specific tool.

Key features of MCP3 Monorepo

• Unified CLI with tool command for all sub-project tools
• Sui blockchain tools (wallets, Cetus, Navi protocols)
• Ethereum implementation of MCP
• DexScreener and DeFiLlama API integrations
• Transaction server and React UI component library
• Shared utilities via @mcp3/common package

Use cases of MCP3 Monorepo

• Interact with the Sui blockchain using wallet and protocol tools
• Query decentralized exchange data from DexScreener
• Fetch DeFi protocol metrics from DeFiLlama
• Manage transaction signing and submission with a dedicated server and UI

FAQ from MCP3 Monorepo

What is MCP3 and why would I use it?

MCP3 implements the Model Context Protocol for blockchain networks, allowing AI models to access on-chain data and perform actions. It is useful for developers building AI-powered blockchain applications.

How do I install MCP3?

You need Node.js v18+ and pnpm v8+. Use npx @mcp3/sui to run tools directly without installation, or clone the monorepo and run pnpm install then pnpm build.

How do I add MCP3 to Claude Desktop?

Add the following to your Claude Desktop config under mcpServers: "mcp3-sui": { "command": "npx", "args": ["-y", "@mcp3/sui", "start", "-t"] }.

What packages are included?

Core packages: @mcp3/common, @mcp3/eth, @mcp3/sui. Sui ecosystem: @mcp3/sui-base, @mcp3/sui-wallets, @mcp3/sui-cetus, @mcp3/sui-navi. Data integrations: @mcp3/dex-screener, @mcp3/defilama. Transaction management: @mcp3/transaction-server, @mcp3/transaction-ui.

How are packages versioned?

Packages are versioned independently. Changes to a package trigger version bumps for that package and its dependents. Bundle packages exclude transaction-server and transaction-ui but include them as dependencies.