This is a simple Flask application that listens for webhook events from Radarr and triggers a library refresh on Jellyfin.

• The app exposes an endpoint /radarr-webhook to receive POST requests from Radarr.
• Radarr should send custom headers: X-Jellyfin-Url (your Jellyfin server URL) and X-Jellyfin-Api-Key (your Jellyfin API key).
• Upon receiving a Radarr event, the app triggers a refresh on the Jellyfin library by calling the Jellyfin API.

The app runs a Flask server on port 5001 and listens for Radarr webhook events.

The Dockerfile uses Python 3.12 slim image, installs dependencies via uv package manager, and runs the app with:

FROM python:3.12-slim

WORKDIR /app

COPY uv.lock .

RUN pip install --no-cache-dir uv && uv install

COPY . .

EXPOSE 5001

CMD ["uv", "run", "main.py"]

The docker-compose file builds the Docker image named radarr-jellyfin-notifier, maps port 5001, and mounts the local directory for easy development:

services:
  radarr-jellyfin-notifier:
    build: https://github.com/tommekevda/radarr-jellyfin-notifier.git
    container_name: radarr-jellyfin-notifier
    restart: unless-stopped
    ports:
      - "5001:5001"
    # volumes:
    #   - .:/app
    command: uv run main.py

• In Radarr, go to Settings > Connect.
• Add a new Webhook.
• Set the URL to http://<your-server-ip>:5001/radarr-webhook.
• Add the following custom headers:
  • X-Jellyfin-Url: Your Jellyfin server URL (e.g. http://jellyfin.local:8096)
  • X-Jellyfin-Api-Key: Your Jellyfin API key
• Save and test the webhook.

Make sure you have uv installed and your dependencies in uv.lock.

Run:

uv run main.py

The app will listen on port 5001.