A Python client that reverse-engineered ChatGPT's front door

What it does

PyChatGPT automated interactions with ChatGPT’s unofficial web backend from Python. It managed the full lifecycle: logging in, grabbing and refreshing access tokens, tracking conversation state, and resuming chats across program restarts, all without keeping a browser open.

The interesting bit

The author reverse-engineered OpenAI’s Auth0 flow—complete with JWT state tokens and CSRF guards—using a TLS client to mimic a real user. The README admits the motive was pure curiosity: “No one has been able to do this, and I wanted to see if I could.”

Key highlights

• Browser-free authentication via a nine-step flow in auth.py
• Persistent conversation tracking with resumable session IDs
• Proxy support and automatic token refresh
• Packaged on PyPI as chatgptpy with a Gradio demo on Hugging Face Spaces
• Colorized CLI output, because why not?

Caveats

• Author explicitly states the project is “Not maintained” and “Not Working”
• Built by reverse-engineering the web API, so it was always going to be fragile

Verdict

A fun archaeological dig if you study authentication bypass or early ChatGPT tooling, but completely non-functional today. Anyone building for production should use OpenAI’s official API instead.