Prowlarr (beta)

Whether Prowlarr still serves its indexers: health errors, indexers disabled after failures, disk space and updates.

Beta

Written from the vendor’s API documentation and tested against realistic recorded-style responses, not yet against a live instance. Tell us what you see.

Network ports to open

From the DumbMonit server (or its relay agent) to the device:

Port	Protocol	Purpose
9696	TCP	API (HTTP, default)
443	TCP	Only with the https scheme behind a reverse proxy

The failure worth watching: an indexer that is disabled and forgotten. After a few failures Prowlarr disables an indexer for hours, then days; Sonarr, Radarr and Lidarr keep searching through the others and nothing says that releases are missing.

What it watches

All metrics are prefixed dumbmonit_prowlarr_.

Metric	What	Labels
version_info	value 1	version
update_available	1 when a newer release exists (absent when the update list is unavailable)	latest_version
health_errors, health_warnings	checks of the System → Status page that report an error or a warning
health_issue	value 1 for each error or warning, at most 32	source, level
indexers_disabled	indexers still disabled after repeated failures
disk_used_percent, disk_free_bytes	each disk Prowlarr reports (root folders, download folder), at most 32	path
scrape_errors	calls that failed on the last probe

The built-in rules that apply: Prowlarr health error, Prowlarr indexers disabled, Prowlarr disk almost full, Prowlarr update available, plus Monitor unreachable.

Read the API key in Prowlarr

1. In Prowlarr, open Settings → General → Security and copy the API Key.

2. In DumbMonit, enter Prowlarr’s address and paste the key.

Warning

A Prowlarr API key cannot be limited to reading: keep it only in DumbMonit, which sends GET requests and nothing else.

Credentials

Credential	Fields
API key	Sent in the X-Api-Key header.

Address: a host name (prowlarr.lan), host:port, or a full URL with a path prefix (https://home.lan/prowlarr, matching Prowlarr’s URL Base setting). Options: protocol (HTTP by default), port (9696), certificate check and request timeout (15 s).