ZySignAI REST API — v1.0

API Documentation

Integrate real-time sign language translation into your application. One API call converts any audio or video into sign language gloss for ASL, BSL, KSL, CSL, LSF, Auslan and more.

Base URL

https://zysignai-backend.onrender.com

⚠️ The backend runs on Render free tier and may take 30-50 seconds to wake up after inactivity. Call /api/health/ first to wake it.

⚠️

Currently open access — authentication coming soon

The API is currently open for testing and evaluation. Production API keys with rate limiting will be available for commercial integrations. Contact us to discuss broadcaster and enterprise pricing.

Endpoints

POST/api/transcribe/

Transcribe audio or video file

Upload any audio or video file and receive a transcript plus sign language gloss. Supports MP4, MP3, WAV, OGG, WebM, M4A up to 25MB.

Request — multipart/form-data

Field	Type	Required	Description
`file`	File	required	Audio or video file — MP4, MP3, WAV, OGG, WebM, M4A
`language`	string	optional	Sign language target: ASL, BSL, KSL, CSL, LSF, Auslan. Default: ASL

Code example

curl -X POST https://zysignai-backend.onrender.com/api/transcribe/ \
  -F "file=@speech.mp3" \
  -F "language=KSL"

Response

application/json

{
  "success": true,
  "transcript": "Good morning everyone. Today is Saturday.",
  "gloss": "MORNING EVERYONE TODAY SATURDAY",
  "language": "KSL",
  "duration": 4.2,
  "segments": [
    {
      "start": 0.0,
      "end": 2.1,
      "text": "Good morning everyone."
    },
    {
      "start": 2.1,
      "end": 4.2,
      "text": "Today is Saturday."
    }
  ]
}

GET/api/health/

Health check

Check if the ZySignAI backend is running and ready to process requests.

Code example

curl https://zysignai-backend.onrender.com/api/health/

Response

application/json

{
  "status": "ok",
  "service": "ZySignAI"
}

Supported sign languages

🇺🇸

ASL

American Sign Language

🇬🇧

BSL

British Sign Language

🇰🇪

KSL

Kenyan Sign Language

🇨🇳

CSL

Chinese Sign Language

🇫🇷

LSF

Langue des Signes Française

🇦🇺

Auslan

Australian Sign Language

More sign languages in active development. Contact us for specific language requests.

Use cases

📺

Broadcast accessibility

Integrate ZySignAI into your media platform to automatically add sign language to video content.

language=KSL

🎓

Educational platforms

Make online courses accessible to deaf students by translating lecture audio into sign language gloss.

language=ASL

🏥

Healthcare communication

Help medical staff communicate with deaf patients by translating spoken instructions.

language=BSL

🏛️

Government services

Make public announcements and emergency broadcasts accessible to deaf citizens.

language=KSL

Rate limits & pricing

Free (testing)10 requests/hour

Free

Developer1,000 requests/day

$10/month

Broadcaster10,000 requests/day

$100/month

EnterpriseUnlimited

API keys and billing not yet active. Contact us to discuss integration and pricing.

🤝

Ready to integrate ZySignAI?

Contact us to discuss your use case, get API access, or explore partnership opportunities. We work with broadcasters, educators, healthcare providers, and government organisations.