Sleepytale API

The Sleepytale API turns a short text prompt into finished bedtime audio. It produces two formats:

• Lullaby: a fully sung lullaby, delivered as an MP3.
• Musical: a narrated bedtime story with a sung lullaby in the middle, delivered as an MP3.

Both endpoints can optionally generate AI cover art for the piece (include_image), and both return lyrics or the full narrated text alongside the audio.

Straight from the API, no post-processing:

The API is asynchronous. Submitting a generation returns 202 Accepted with a job_id; you then poll the job until its status is succeeded or failed. v1 is polling-only.

curl -X POST https://www.sleepytale.com/api/v1/lullaby \
  -H "Authorization: Bearer $SLEEPYTALE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "a sleepy little fox curling up under the stars"}'

curl https://www.sleepytale.com/api/v1/jobs/$JOB_ID \
  -H "Authorization: Bearer $SLEEPYTALE_API_KEY"

Send your secret key as a bearer token on every request: Authorization: Bearer sk_live_.... The key is the identity. Requests never accept a user id. Create and manage keys from your Dashboard.

Every plan includes a monthly credit allotment. A lullaby costs 1 credit, a musical 2 credits, and the optional cover image adds +1. Credits are charged on success only and reset each billing cycle. See Pricing for plan details.