python-notes

Mini-ChatGPT (Streamlit + GitHub Models)

A lightweight Streamlit chat app powered by GitHub Models via langchain-azure-ai.
It supports:

• ✅ GitHub token input in the UI (no hard-coding needed)
• ✅ System prompt customization
• ✅ Chat history that persists for the session
• ✅ Multiple model choices
• ✅ Safe token handling (stored only in session state)
• ✅ Clear chat functionality

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🚀 Getting Started

1. Install dependencies using uv

uv init
uv add streamlit langchain-azure-ai

2. Provide your GitHub Token

First get your GitHub access token from https://github.com/settings/apps.

You have two options to provide the token in the app:

1. Easiest (local testing) – Paste it in the sidebar when running the app.
2. Environment variable

   export GITHUB_TOKEN="ghp_...your_token..."
   

3. Run the app

uv run streamlit run app.py

🖥 Usage

1. Start the app (above command).
2. Open the URL shown in your terminal (usually http://localhost:8501).