A Torznab API that can be used with the Servarr stack.
I'm now working on a new project, bitmagnet - A self-hosted BitTorrent indexer, DHT crawler, content classifier and torrent search engine with web UI, GraphQL API and Servarr stack integration.
bitmagnet does everything that rarbg-selfhosted can do, and a lot more. I hope you'll check it out! That said, the setup is more complicated, and if you're only interested in having a Torznab-compatible RARBG API, then rarbg-selfhosted might be a better option for you - it's basic, but it works for the intended purpose, so I'll no longer be developing it.
Thanks for the support!
- Obtain a copy of the RARBG SQLite database, I can't help you with that but it's floating around!
 - Adapt the following 
docker-compose.ymlfile to your needs. At a minimum you'll need to point the/rarbg_db.sqlitevolume to the path of your SQLite file, and ensure this container is running in the same Docker network as your Servarr stack containers: 
---
version: "3.7"
services:
  rarbg-selfhosted:
    container_name: rarbg-selfhosted
    image: "ghcr.io/mgdigital/rarbg-selfhosted:latest"
#    environment:
#      - "PATH_SQLITE_DB=/rarbg_db.sqlite" (optional, this is the default value)
#      - "PATH_TRACKERS=/trackers.txt" (optional, this is the default value)
#      - "DEBUG=1" (optional, useful for troubleshooting)
    volumes:
      - "/path/to/rarbg_db.sqlite:/rarbg_db.sqlite"
    ports:
      - "3333:3333"
    restart: unless-stopped- Run 
docker-compose up -d. - The torznab endpoint is now exposed on port 
3333under the path/torznab. - In Prowlarr, Radarr or Sonarr, you can now add RARBG as a Generic Torznab indexer.
 
Alternatively, start the container using docker run:
docker run -v /path/to/rarbg_db.sqlite:/rarbg_db.sqlite -p 3333:3333 ghcr.io/mgdigital/rarbg-selfhosted:latestOr, install GoLang, clone this repo and run directly:
PATH_SQLITE_DB=/path/to/rarbg_db.sqlite go run .