List import from Radarr/Sonarr

[jorgenjanssonlee]

Is it possible to configure a custom list import in Radarr/Sonarr to use a watchlist in Scrob?
I can't seem to work it out.
I've tried just adding the local list url in radarr/setting/importlists/custom, but it times out. For example: http://:7330/list/1

If it's not possible currently, please consider this a feature request.

The use case is to add movies/shows to my Scrob watchlist, and have Radarr/Sonarr automatically/periodically check the list and add the items. This saves a user having to manually click the Add to Radarr/Sonarr button for every item added in the Scrob list

[jorgenjanssonlee]

Timeout was a network problem, now resolved but radarr does not like the response from that url.

2026-06-18 09:24:57.0|Warn|RadarrListImport|Unable to connect to import list

[v6.2.1.10461] Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
   at Newtonsoft.Json.JsonTextReader.ParseValue()
   at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value)
   at NzbDrone.Core.ImportLists.RadarrList.RadarrListParser.PreProcess(ImportListResponse importListResponse) in ./NzbDrone.Core/ImportLists/RadarrList/RadarrListParser.cs:line 41
   at NzbDrone.Core.ImportLists.RadarrList.RadarrListParser.ParseResponse(ImportListResponse importListResponse) in ./NzbDrone.Core/ImportLists/RadarrList/RadarrListParser.cs:line 19
   at NzbDrone.Core.ImportLists.HttpImportListBase`1.FetchPage(ImportListRequest request, IParseImportListResponse parser) in ./NzbDrone.Core/ImportLists/HttpImportListBase.cs:line 187
   at NzbDrone.Core.ImportLists.HttpImportListBase`1.TestConnection() in ./NzbDrone.Core/ImportLists/HttpImportListBase.cs:line 234

[jorgenjanssonlee]

Testing update - v1.34.0 Radarr/Sonarr compatible lists

Tested on Scrob v1.44.0. The feature matches what I originally asked for, thanks for shipping it!

Radarr

Works, but UI instructions aremisleading:

• The list page says to paste the suggested URL as Base URL, e.g. http://localhost:7330/api/proxy/radarr-compat/1/api/v3/movie
  but Radarr itself appends /api/v3/movie, causing a 404 on …/radarr-compat/1/api/v3/movie/api/v3/movie.
• the suggested URL uses localhost which can be incorrect in some setups (including mine), maybe use a more generic {host} variable for users to replace themselves?
• The link to "user settings" for the API key is incorrect, the key is only available on https://{host}/settings

What works: base URL without the API suffix:
http://{host}:7330/api/proxy/radarr-compat/{listid}
plus Scrob API key. Import list syncs and adds movies correctly.

Sonarr

Connects but adds 0 series
Same base-URL fix applies (…/sonarr-compat/1, no /api/v3/series).

Import list tests OK and finds all items (Items found: 10, Series added: 0), but nothing new is added. The compat endpoint returns series with tmdbId only — no tvdbId in the JSON. Sonarr requires tvdbId > 0 for import lists.

Looks like compat.py only includes tvdbId when Show.tvdb_id is set in the DB, but list items from TMDB search often lack that. The manual “Add to Sonarr” flow resolves TVDB via tmdb.get_external_ids() - that lookup doesn’t happen in the compat endpoint.

Suggested fixes

• Update list page URLs/instructions to omit /api/v3/movie and /api/v3/series.
• Update "user settings" link to "settings" and the correct url https://{host}/settings
• Resolve tvdbId in sonarr_list() the same way as request_media (Show column → tmdb_data.external_ids → TMDB external_ids fallback).

Happy to re-test once this is addressed, and thanks again for your work on this!

[jorgenjanssonlee]

Additional note: because this is using a Radarr/Sonarr type import list, there are several fields in the config that makes no sense when we sync with a non-radarr/sonarr list: Quality Profiles, Tags, Root Folders, Language Profiles
I've left these blanks and everything works fine, but they do generate some noise and error in the Radarr/Sonarr logs.
Looks like the only list type that supports auth via API key is the Radarr/Sonarr lists, so I guess this is unavoidable.