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# Which states and carriers are covered?

## States

`GET /v1/capabilities` answers with one entry for each line your key can quote. Each entry's `states` lists the states where your key can quote that line. If a line isn't in the answer, your key can't quote it.

* **Sandbox key:** `states` lists the states that the sandbox scenarios are built for.
* **Live key:** `states` lists the states where Truvo has checked live quotes of the line. Live traffic needs Truvo's approval. See [Keys and environments](/guides/authentication).

Each entry in `actions` lists its own `states` too, because an action can work in fewer states than its line.

## Carriers

To see the carriers for one request:

* `market_outcomes` on the quote request shows how carriers answered, with each carrier's name in `source`.
* Each quote names its carrier in `source.carrier`, with an `id` and a `name`.

New carrier IDs can appear at any time, so handle an ID you don't know. See [Versions and changes](/guides/versioning#what-can-change-in-any-revision).