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Google Gemini API web app samples

These are the code samples that are found in the 3rd post in the series introducing the Gemini API.

❗ API key required
An API key is required to use Google's Gemini API. Follow the instructions below. The app will not run without a .env file (Node.js) or settings.py (Python).

Code samples

App Description Platform
webgem/nodejs/main.js Express.js sample app Node.js (CommonJS)
webgem/nodejs/main.mjs Express.js sample app Node.js (modern JS/ECMAScript module)
webgem/nodejs/templates/index.html Web template Nunjucks (identical to Jinja2)
webgem/python/main.py Flask sample app Python 3
webgem/python/templates/index.html Web template Jinja2 (identical to Nunjucks)

Instructions

Node.js

  1. Ensure your Node (and NPM) installation is up-to-date (recommend 18+)
  2. cd nodejs
  3. Install packages: npm i dotenv express multer nunjucks sharp @google/generative-ai
  4. Create API key and set in .env file as API_KEY = <YOUR_API_KEY>;
  5. Run node main.js or node main.mjs

Python

  1. Ensure your Python (and pip) installation is up-to-date (recommend 3.9+)
  2. cd python and optionally create & activate a virtual environment ("virtualenv") for isolation
  3. Install packages: pip install -U pip flask pillow google-generativeai (or pip3)
  4. Create API key and set in settings.py file as API_KEY = <YOUR_API_KEY> ... you can alternatively put it into .env and use python-dotenv, similar to the Node version.
  5. Run python main.py (or python3)
📝 Gemini API also accessible from GCP Vertex AI
While these sample apps access the Gemini API from Google AI, a great place for beginners and those experimenting with it, the API is also accessible from GCP's Vertex AI platform for those ready to use Gemini for production workloads. To learn more about calling the Gemini API from either (or both) places, see my "A better Gemini API 'Hello World!' sample" post, the first in my multi-part series on the Gemini API.