codebase-explorer-mcp

An MCP server that analyzes any codebase — detects project type, languages, framework, entry points, API routes, controllers, services, components, tests, and more.

Quick start

1. Install uv

# Windows
powershell -c "irm https://astral.sh/uv/install.ps1 | iex"

# macOS / Linux
curl -LsSf https://astral.sh/uv/install.sh | sh

Verify: uv --version

Why uv? uv.lock pins exact dependency versions (like package-lock.json), so everyone gets identical environments. mcp dev also uses uvx under the hood.

2. Setup the project

cd /path/to/codebase-explorer-mcp
uv sync

This reads uv.lock, creates .venv, and installs all dependencies.

3a. Use with Claude Desktop

Find your venv Python path:

# From the project folder:
.venv\Scripts\python.exe --version

Add to claude_desktop_config.json (%APPDATA%\Claude\claude_desktop_config.json):

{
  "mcpServers": {
    "codebase-explorer": {
      "command": "C:\\full\\path\\to\\codebase-explorer-mcp\\.venv\\Scripts\\python.exe",
      "args": ["server.py"],
      "cwd": "C:\\full\\path\\to\\codebase-explorer-mcp"
    }
  }
}

Restart Claude Desktop.

3b. Test with MCP Inspector (development)

cd /path/to/codebase-explorer-mcp
mcp dev server.py

Opens http://localhost:6274 — test all tools live in a web UI.

Related MCP server: CodeBase Optimizer

How to use

You only need to provide the repo path — the server auto-discovers everything else.

Example flow

1. Get an overview: analyze_structure(path="C:\\MyProject")

2. See the big picture: generate_architecture(path="C:\\MyProject") → Renders a Mermaid diagram with layers: Entry → API → Logic → Data → UI, plus import graph edges

3. Check git health: get_git_info(path="C:\\MyProject") → Branch, recent commits, contributors, hot files, uncommitted changes

4. Scan for leaks: find_secrets(path="C:\\MyProject") → Hardcoded API keys, tokens, passwords, and database credentials

5. Find dead code: analyze_dead_code(path="C:\\MyProject") → Lists functions, classes, and exports defined but never imported or referenced elsewhere

6. Find specific features: find_features(path="C:\\MyProject") → See all API routes, controllers, tests listed with their file locations

7. Inspect one: get_feature_detail(path="C:\\MyProject", name="get_users") → Shows code context around that feature, no need to know the file or line number

8. Search: search_symbols(path="C:\\MyProject", pattern="async def") → Find all async functions in the codebase

Alternative setup (without uv)

python -m venv venv
venv\Scripts\activate     # Windows
# source venv/bin/activate  # macOS / Linux
pip install "mcp[cli]>=1.6.0"
python server.py

Supported Languages

Python, JavaScript/TypeScript, Java, Go, Ruby, C#, Rust, PHP, Kotlin, Swift, and more.