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POST
Detect watermark

Authorizations

Authorization
string
header
default:$CARTESIA_API_KEY
required

Cartesia API key (sk_car_...). Get one at play.cartesia.ai/keys.

Headers

Cartesia-Version
enum<string>
default:2026-08-14
required

API version header.

Available options:
2026-08-14
Example:

"2026-08-14"

Body

multipart/form-data
file
file
required

Audio file to check, between 3 seconds and 5 minutes long, up to 32 MiB. Supported formats are FLAC, M4A, MP3, MP4, MPEG, MPGA, OGA, OGG, WAV, and WebM.

Response

200 - application/json

Watermark detection result

detected
boolean
required

Whether a Cartesia watermark was detected in the audio