Import an existing article

Create a Frase document from an article written elsewhere, then score it and build its optimization brief. Supply the body directly (body + body_format) or a source_url for Frase to fetch — the two are mutually exclusive. Takes one article credit per (article, billing period), so regenerating the same article later in the same period does not charge again.

Retries are safe. Send an Idempotency-Key header and a repeated request returns 200 with the original content_id instead of importing again. Without the header the key is derived from the request body, so an identical retry is still deduplicated. This matters because a request can be retried automatically on a 5xx, and each import would otherwise take its own credit.