tokens.md

# Author     : Georgios Ioannou
#
# Copyright © 2024 by Georgios Ioannou

# Setting Up API Tokens for Hugging Face & OpenAI in Hugging Face Space

## 1. Create Required Tokens
1. **Hugging Face Token**:
   - Log in to [Hugging Face](https://huggingface.co)
   - Go to Settings → Access Tokens
   - Click "New token"
   - Name your token and select permissions
   - Copy the token

2. **OpenAI API Key**:
   - Log in to [OpenAI](https://platform.openai.com)
   - Go to API settings
   - Create new API key
   - Copy the key

3. **MongoDB URI**:
   - Follow [here](https://huggingface.co/spaces/GeorgiosIoannouCoder/cuny-tech-prep-tutorial-5/blob/main/mongodb_atlas_vector_search_setup.md#connection-string)

## 2. Add Tokens to Hugging Face Space Settings
1. Go INTO your Hugging Face Space settings (⚙️ icon)
2. Find "Variables and secrets" section
3. Add  tokens as "New secret" one by one:
```toml
HUGGINGFACEHUB_API_TOKEN = "your_huggingface_token_here"
OPENAI_API_KEY = "your_openai_key_here"
MONGO_URI = "your_mongo_uri"
```

## 3. Add Access Tokens in app.py

### NOTE: pip install python-dotenv

#### [python-dotenv](https://pypi.org/project/python-dotenv/) gives access to load_dotenv, find_dotenv
```python
import os
from dotenv import load_dotenv, find_dotenv

# Load environment variable(s)
load_dotenv(find_dotenv())
HUGGINGFACEHUB_API_TOKEN = os.getenv("HUGGINGFACEHUB_API_TOKEN")
OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
MONGO_URI = os.getenv("MONGO_URI")
```

## Alternative Method
```python
import streamlit as st

# Load environment variable(s)
HUGGINGFACEHUB_API_TOKEN = st.secrets["HUGGINGFACEHUB_API_TOKEN"]
OPENAI_API_KEY = st.secrets["OPENAI_API_KEY"]
MONGO_URI = st.secrets["MONGO_URI"]
```

## Security Best Practices
- Never commit tokens to version control
- Add `.env` to `.gitignore`
- Use read-only tokens when possible
- Regularly refresh your API keys
- Set appropriate token permissions