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Year
2025
Tech & Technique
Node.js, Express, Puppeteer, puppeteer-extra, puppeteer-extra-plugin-stealth, dotenv, JavaScript
Description
A Node.js + Express backend that automates ChatGPT via Puppeteer to expose an unofficial API for local development and testing.
Key Features:
Technical Highlights:
Key Features:
- 🤖 Automated Login: Stealth plugin & headful Chrome with persistent user data
- 💬 Prompt Proxy: Send prompts and receive streamed responses by polling the ChatGPT UI
- 🔗 Thread Continuity: Reuse conversation threadIds to maintain context
- ⚙️ Error Handling: Auth checks via /api/auth/session and UI redirects
- 🔒 Session Persistence: user-data-dir to avoid incognito resets
Technical Highlights:
- 📦 Express routes for /api/login and /api/prompt
- 🐒 Puppeteer-extra with stealth to mimic human browsing
- ⏳ Polling logic to detect streaming completion in ChatGPT’s DOM
- 🔍 JSDoc & helper utilities for robust auth & parsing
My Role
Full-Stack Developer
Responsibilities:
Responsibilities:
- 🛠️ Built the Express API with login and prompt endpoints
- 🕵️ Automated ChatGPT UI flows using Puppeteer & stealth evasion
- 🔄 Implemented session reuse and thread management
- 🔧 Developed polling mechanism for streaming LLM output
- 📦 Packaged and documented the tool for local developer use only