Reverse-engineered ChatGPT proxy calls it quits

What it does

ninja is a Rust reverse proxy that intermediates ChatGPT and OpenAI traffic. It handles Email/password authentication, performs API key acquisition, and serves a ChatGPT WebUI from the same binary. The README also claims support for an IP proxy pool and a very small memory footprint.

The interesting bit

Rather than wrapping official SDKs, the project reverse-engineers ChatGPT’s private web endpoints to expose programmatic access and a browser interface. That it gathered 1,683 stars before the author posted a “Project has ended” notice suggests it filled a real gap—though the README never explains exactly what that gap was.

Key highlights

• Self-hosted proxy for ChatGPT-API and OpenAI-API traffic
• Built-in account authentication and API key acquisition
• Bundles a ChatGPT WebUI
• IP proxy pool support for rotating egress
• Explicitly discontinued by the maintainer

Caveats

• The author has ended the project, so expect no fixes or updates
• The README is thin on architecture and security details; it is unclear how credentials or acquired keys are stored and managed

Verdict

Useful as a reference implementation for reverse-engineering ChatGPT’s web client or building Rust proxies, but unsuitable for production given its retired status and vague internals.