Get Catalog Provider
Get a single speech synthesis provider by its canonical identifier.
Returns the same shape as an item in `GET /providers` — display name, model
count, and a HATEOAS `models` link — but scoped to a single provider. Returns
404 if the provider identifier is not recognized. The canonical identifier is
the lowercase slug returned in the `provider` field of the list response.
Authentication
AuthorizationBearer
Clerk JWT token
OR
AuthorizationBearer
Onepin live API key (op_live_...). Test and public keys are reserved in Phase 1.
Path parameters
provider
Headers
X-Workspace-Id
Response
Successful Response
data
Catalog provider entry — lean, customer-safe.
Sourced from the in-memory ProviderRegistry (TTS / processing kind).
Cost, credentials, base_url, and enabled flags are excluded by construction.
meta
Errors
404
Not Found Error
422
Unprocessable Entity Error

