Authentication

Direct API key

Pass your API key in the x-api-key header with every request.

curl -X POST https://snapchat-text-overlay-api.com/v1/overlay \
  -H "x-api-key: snap_live_your_key" \
  -F "asset=@photo.jpg" \
  -F "text=hello world"

Detail	Value
Header	x-api-key
Format	snap_live_...
Where to get it	Dashboard after subscribing

RapidAPI

If you subscribed through RapidAPI, use your RapidAPI key instead. RapidAPI adds its own authentication headers automatically.

curl -X POST https://snap-lay.p.rapidapi.com/v1/overlay \
  -H "x-rapidapi-host: snap-lay.p.rapidapi.com" \
  -H "x-rapidapi-key: your_rapidapi_key" \
  -F "asset=@photo.jpg" \
  -F "text=hello world"

Error responses

Status	Meaning
401	Missing or invalid API key
403	Key is inactive or suspended