gitcortex 0.4.0

Git-aware code knowledge graph — incremental AST indexing on every commit, MCP server for AI assistants

gitcortex

A code knowledge graph for Git repositories. GitCortex indexes your codebase on every commit and answers questions like "what calls this function?" or "what changed between these two branches?" — so your AI coding assistant can work with real structure instead of scanning raw files.

Install

pip install gitcortex
# or
pipx install gitcortex
# or
uv tool install gitcortex

Supports macOS (Apple Silicon + Intel), Linux (x86_64 + arm64), and Windows (x64). No Rust or compiler required — a pre-built binary is bundled in the wheel.

Quick start

cd your-repo
gcx init       # index the repo + install git hooks
gcx serve      # start the MCP server for your AI assistant

After gcx init, the graph updates automatically on every git commit, merge, rebase, and checkout. No manual re-runs needed.

What it does

GitCortex builds a queryable graph of your codebase — functions, structs, classes, interfaces, call relationships, inheritance chains — and keeps it current automatically.

• Works with: Rust, Python, TypeScript, JavaScript, Go, Java
• Integrates with: Claude Code, Cursor, Windsurf, GitHub Copilot, Antigravity
• Per-branch graphs: switching branches gives you the graph for that branch instantly
• Zero runtime dependency: single self-contained binary, nothing else to install

Commands

gcx init

Index the current repo, install git hooks, and register the MCP server with your editor.

gcx init                     # auto-detects your editor
gcx init --editor cursor     # target a specific editor: claude, cursor, windsurf, copilot
gcx init --editor all        # write configs for every supported editor

gcx serve

Start the MCP server so your AI assistant can query the knowledge graph.

gcx serve

Once running, your AI assistant has access to tools like find_callers, lookup_symbol, list_definitions, trace_path, and more.

gcx query

Query the graph from the terminal without an AI assistant.

gcx query lookup-symbol MyStruct
gcx query find-callers process_request
gcx query list-definitions src/lib.rs

gcx blast-radius

See which parts of the codebase are affected by changes between two branches — useful before merging.

gcx blast-radius --base main --head feat/my-feature
gcx blast-radius --base main --head feat/my-feature --format github-comment

gcx viz

Open an interactive graph in your browser.

gcx viz                         # opens on port 5678
gcx viz --port 9000
gcx viz --branch feat/my-feature
gcx viz --format dot > graph.dot   # export as Graphviz DOT

gcx export

Generate a readable Markdown map of the codebase at .gitcortex/context.md. The git hook keeps it up to date automatically.

gcx export

gcx status

Show node and edge counts for the current branch.

gcx status

gcx clean

Wipe the local graph store and re-index from scratch on the next commit.

gcx clean

MCP tools available to your AI assistant

Tool	What it answers
lookup_symbol	Where is MyStruct defined?
find_callers	What calls process_request?
find_callees	What does handle_request call?
list_definitions	What's defined in src/auth.rs?
find_implementors	What implements AuthProvider?
trace_path	How do you get from main to validate_token?
find_unused_symbols	What's never called (dead code candidates)?
get_subgraph	Everything within 2 hops of UserService
detect_changes	What changed + who's affected vs main?
symbol_context	Callers, callees, and uses for a symbol

All tools accept an optional branch parameter.

Configuration

.gitcortex/config.toml (committed to your repo, shared with your team):

[index]
languages = ["rust", "typescript", "python", "go"]
max_file_size_kb = 500

.gitcortex/ignore (.gitignore syntax — files to exclude from indexing):

target/
build/
**/*.generated.rs

License

MIT — free for commercial and open-source use.

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