Row filtering (horizontal)
Category endpoints accept query parameters named after the columns you can filter on — each one does an exact match. Which columns are filterable varies per endpoint; check the API Reference tab for the exact list on the endpoint you’re calling.OR syntax — a query parameter matches rows where that column equals the given value exactly. To narrow further, combine multiple parameters; they are ANDed together.
Raw endpoints (
/raw/{table_name}) do not support these filters — they always return the full unfiltered table, paginated via cursor. See Endpoint Types.Column filtering (vertical)
Which fields an entity’s response includes can be restricted per API key. An admin configures this in the Trassets portal, per key and per entity — a key without explicit configuration returns the full column set documented in the API Reference. Changes take effect immediately, without an API redeploy. This is not something you control via the request itself — there is nofields or select query parameter. If a field you expect is missing from a response even though it’s listed in the API Reference for that entity, your API key’s column configuration is the likely cause; contact Trassets support to review or change it.