JAR Indexer MCP Server

An MCP (Model Context Protocol) server that enables LLMs to access and analyze Java/Kotlin library source code by indexing JAR files and Git repositories.

Quick Start

# Install dependencies
uv sync

# Run the MCP server
uv run python -m src.main

Installation

1. Clone this repository:

git clone https://github.com/studykit/mcp-jar-indexer.git
cd jar-indexer

2. Install dependencies:

uv sync

3. Add to Claude Desktop configuration (see below)

Claude Desktop

Add the following configuration to your Claude Desktop config file:

Location:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Configuration:

{
  "mcpServers": {
    "jar-indexer": {
      "command": "uv",
      "args": ["--directory", "/path/to/jar-indexer", "run", "python", "-m", "src.main"]
    }
  }
}

Replace /path/to/jar-indexer with the actual path to this project directory.

Available Tools

Once connected, the server provides these MCP tools:

• register_source: Register JAR files, directories, or Git repositories for indexing
• index_artifact: Index a specific Maven artifact by downloading its source JAR
• list_artifacts: List all registered and indexed artifacts
• list_folder_tree: Browse the folder structure of indexed artifacts
• get_file: Read the contents of specific files from indexed sources
• search_file_names: Search for files by name patterns within indexed sources
• search_file_content: Search for content within files using regex patterns

For detailed usage instructions, see the project documentation.