oneport-context

Code Contextualizer — NotebookLM for your codebase, that never leaves your machine.

Point it at any repo (however large — no upload) and it builds a hierarchical understanding locally, then turns it into a narrated architecture walkthrough, a narrated MP4 video, a PDF handbook, a chat that knows your code, and hover-to-explain in your editor. Runs on your own model key (Google Gemini free tier) or fully local — your code never leaves the machine.

Try it in 60 seconds (no setup)

pip install oneport-context
oneport-context demo

Opens a narrated, animated walkthrough of a bundled sample repo in your browser — no API key needed.

Use it on your own repo

export GEMINI_API_KEY=…            # free key at aistudio.google.com/apikey

oneport-context index ./my-repo    # build the understanding (cached in .context/)
oneport-context show  ./my-repo    # narrated walkthrough in the browser
oneport-context video ./my-repo    # narrated MP4 (>= 8 min)   -> needs [video]
oneport-context pdf   ./my-repo    # PDF handbook, opens in browser -> needs [pdf]
oneport-context chat  ./my-repo    # ask questions in the terminal
oneport-context lsp   ./my-repo    # editor hover-to-explain -> needs [lsp]

Without a key it still works in heuristic mode (structure + docstrings) — free and offline, just less prose.

Commands

Install with the features you want

pip install 'oneport-context[video,pdf,lsp]'

• [video] — pillow, moviepy (ffmpeg), gTTS voice
• [pdf] — reportlab
• [lsp] — pygls

Why CLI, not upload

Big repos don't fit an upload box. The CLI walks the tree locally and builds a file -> module -> repo summary (module summaries are batched, so a large repo costs only a handful of model calls). Everything is cached in .context/; your code never leaves the machine.

Notes

• video/pdf/chat produce their best output with GEMINI_API_KEY set; heuristic mode works without it.
• Prefer local/air-gapped? Set ONEPORT_MODE=local and run against Ollama.
• Have an Anthropic key? Set ANTHROPIC_API_KEY and it takes priority automatically.

License

Apache-2.0