Retrieve a catalog price version
One price version by its ID, as catalog.price_changed, a cost line and a rate card name it: the rates, the source, the date it takes effect and what changed from the version before. Needs config:read.
Authentication
A secret key (rl_sk_test_..., rl_sk_live_...) or a restricted key with limited scopes (rl_rk_test_..., rl_rk_live_...). A restricted key can carry agent: true and an expires_at, and is what a coding agent should hold. Keys end in a checksum so secret scanners can recognize them. People create, roll and revoke keys in the dashboard; GET /v1/api_keys lists them, masked.
Path parameters
The catalog price version ID (catp_...).
Response
scheduled: takes effect at effective_from. active: in force. superseded: replaced by a later version.
Where the rates were read: the provider’s pricing page or its change notice.