MCP Rust Crate Latest Version Server

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A high-performance Model Context Protocol (MCP) server for managing and querying Rust crate versions from crates.io. This implementation combines the latest MCP standards with Rust's sparse registry protocol for efficient, production-ready crate version management.

📋 Table of Contents

• 🚀 Quick Start - Get up and running in minutes
• 🎯 Cursor IDE Integration - Configure MCP in Cursor
• 🛠️ Available MCP Tools - Core functionality
• 📊 Performance - Benchmarks and metrics
• 🏗️ Architecture - System design overview
• 🔄 Request Flow - How requests are processed
• 🔧 Technical Details - Deep dive into implementation
• 🧪 Testing - Quality assurance approach
• 📁 Repository Structure - Project organization

🚀 Quick Start

Prerequisites

• Rust 1.73 or later
• Cargo

Getting Started Workflow

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│ 1. Clone/Setup  │───▶│ 2. Build Project│───▶│ 3. Run Server   │
│                 │    │                 │    │                 │
│ git clone ...   │    │ cargo build     │    │ cargo run       │
│ cd project/     │    │ --release       │    │ --release       │
└─────────────────┘    └─────────────────┘    └─────────────────┘
         │                       │                       │
         ▼                       ▼                       ▼
┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│ ✓ Rust 1.73+    │    │ ✓ Dependencies  │    │ ✓ MCP Server    │
│ ✓ Cargo ready   │    │ ✓ Optimization  │    │ ✓ stdio ready   │
└─────────────────┘    └─────────────────┘    └─────────────────┘
                                                        │
                                                        ▼
                                              ┌─────────────────┐
                                              │ 4. Test & Use   │
                                              │                 │
                                              │ • List tools    │
                                              │ • Query crates  │
                                              │ • Verify cache  │
                                              └─────────────────┘

Installation & Running

# Clone or navigate to this directory
cd /path/to/mcp-rust-get-crate-latest-version

# Build the project (includes optimizations)
cargo build --release

# Run the MCP server (communicates via stdio)
cargo run --release -- --log-level info

Quick Verification

# 1. Run all tests
cargo test -- --test-threads=1 --nocapture

# 2. Test MCP protocol response
echo '{"jsonrpc": "2.0", "id": 1, "method": "tools/list"}' | cargo run --release -- --log-level warn

# 3. Test crate version lookup
echo '{"jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": {"name": "get_latest_version", "arguments": {"crate_name": "serde"}}}' | cargo run --release -- --log-level warn

🎯 Cursor IDE Integration

Integrate this MCP server with Cursor IDE to access Rust crate information directly within your development environment. This integration enables your AI assistant to query crate versions, check dependencies, and provide real-time crate information while you code.

Benefits of Integration

• Seamless Workflow: Query crate versions without leaving your IDE
• AI-Powered Assistance: Let Cursor's agent help you find and compare crate versions
• Real-Time Context: Get instant access to crate metadata during development
• Enhanced Productivity: Reduce context switching between IDE and web bro

... View full README on GitHub