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Houndarr

Polite, automated media searching for your *arr stack

Works withRadarr·Sonarr·Lidarr·Readarr·Whisparr
Get Started →View on GitHub
Houndarr Dashboard — instance cards with search metrics and activity

Polite & Controlled

Small batches, configurable sleep intervals, per-item cooldowns, and hourly API caps. Houndarr searches slowly and politely so your indexers stay healthy.

Missing & Cutoff

Automatically searches for missing episodes, movies, albums, and books, plus items below your quality cutoff. Each search type has independent controls and budgets.

Multi-Instance

Connect one or more Radarr, Sonarr, Lidarr, Readarr, and Whisparr instances, each with their own batch size, sleep interval, cooldown, and hourly cap settings.

No Telemetry

Zero outbound connections to analytics, error tracking, or developer-controlled servers. The only network traffic goes to your own *arr instances.

Encrypted API Keys

API keys are encrypted at rest with Fernet (AES-128-CBC + HMAC-SHA256) and are never sent back to the browser. Authentication uses bcrypt, signed sessions, and CSRF protection.

Single Docker Container

Runs as a single container alongside your existing *arr stack. SQLite database, non-root execution, and a dark-themed web UI built with FastAPI, HTMX, and Tailwind CSS.

Why Houndarr?

Radarr, Sonarr, Lidarr, Readarr, and Whisparr monitor RSS feeds for new releases, but they do not go back and actively search for content already in your library that is missing or below your quality cutoff. Their built-in "Search All Missing" button fires every item at once, overwhelming indexer API limits.

Houndarr searches slowly, politely, and automatically: small batches, configurable sleep intervals, per-item cooldowns, and hourly API caps. It runs as a single Docker container alongside your existing *arr stack.

See It in Action

Houndarr Dashboard — instance cards with search metrics and activity

Dashboard — live search metrics, instance status, and on-demand triggers

Houndarr Logs — filterable search activity log

Logs

Houndarr Settings — instance list with enable toggles

Settings

Houndarr Add Instance — search and cutoff configuration

Instance config

Houndarr Account settings — password and session management

Account

Houndarr Help — in-app settings reference

Help

Focused by Design

  • No download-client integration — it triggers searches in your *arr instances, which handle downloads
  • No Prowlarr/indexer management — your *arr instances manage their own indexers
  • No request workflows — no Overseerr/Ombi-style request handling
  • No multi-user support — single admin username and password
  • No media file manipulation — it never touches your library files