# Search compatible federated domains

Returns a list of federated server domains compatible with specified software. Filters domains by prefix matching for autocomplete functionality. Useful for discovering servers running specific ActivityPub software (Mastodon, Pleroma, etc.). Results are cached for performance.

Endpoint: GET /api/v1/instance/domains
Version: 1.0
Security: 

## Query parameters:

  - `domain` (string,null)
    Domain prefix to search for (autocomplete-style matching)

  - `limit` (integer,null)
    Maximum number of results to return. If omitted, all matching domains are returned.

  - `software` (string,null)
    Software name to filter by (e.g. 'mastodon', 'pleroma')