Real kid voices, one POST away

Quick start

1. Create an account and buy credits (from $10 for 100).
2. Create an API key on your dashboard.
3. POST your text — get an MP3 back.

curl https://kidsstoryteller.ai/api/v1/tts \
  -H "Authorization: Bearer ksk_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Once upon a time, in a forest full of wonder, a little fox found a glowing seed.",
    "voice": "kid-girl",
    "speed": "normal"
  }' \
  --output story.mp3

▶️ Try it

Hear any voice before you integrate. (Uses your account's character allowance — no API key needed here.)

POST /api/v1/tts

const res = await fetch("https://kidsstoryteller.ai/api/v1/tts", {
  method: "POST",
  headers: {
    "Authorization": "Bearer ksk_live_YOUR_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    text: "Era uma vez uma raposa azul…",
    voice: "kid-portuguese",
    format: "json", // base64 instead of binary
  }),
});
const { audio, credits_charged } = await res.json();

Errors are JSON: { "error": { "code", "message" } } — 401 bad key, 402 not enough credits, 400 invalid input or content rejected, 429 rate limited. You are never charged for a failed request.

Pricing

1 credit per 1,000 characters (minimum 1 credit per request), from the same credit balance as the rest of KidsStoryteller. Packs: 100 / $10 · 300 / $25 · 750 / $55 — so roughly $0.073–0.10 per 1,000 characters. Credits are valid for 30 days.

Content safety

Every request is screened by an AI moderation layer before synthesis. Text that isn't appropriate for a kids platform is rejected (HTTP 400, no charge). This is non-negotiable — these are children's voices.