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## Instant Voice Cloning: detect watermark

Model APIs

Instant Voice Cloning (beta) now exposes **`POST /voices/watermark/detect`**. Upload a clip to check whether it carries the Sarvam STFT watermark embedded by Instant Voice Cloning generation.

* Multipart `file` upload; max 10 MB; analysis capped at 120 seconds.
* Response `data.verdict` is `watermarked`, `not_detected`, or `inconclusive` (short clips under about 5 seconds are usually inconclusive).
* Auth via `api-subscription-key`. Rate limited to 5 requests per minute. Consumes no credits.

See the [Detect Watermark](/api-reference/voice-cloning/detect-watermark) API reference.