Tool name: delete-manual-tag
Deletes a manual tag in KlickTipp and takes it off every contact that carries it. Only manual tags can be deleted; a tag KlickTipp puts on contacts itself is refused. A tag that campaigns, automations or other entities still use is refused as well, and the refusal names them, so nothing that depends on the tag breaks silently. This cannot be undone, so only call it for a tag the user has explicitly asked to delete.
Input example
{ "tagId": 1, "accountId": null }