## Download the OpenAPI definition

**get** `/v1/openapi.yaml`

Downloads this API's OpenAPI 3.1 definition, served as
`application/yaml`. It is the authority for request and response shapes
and error codes; the guide carries the semantics a spec cannot express,
such as consent gating and turn-taking.

### Example

```http
curl https://messages.api.linqapp.com/v1/openapi.yaml \
    -H "Authorization: Bearer $LINQ_AMB_API_KEY"
```