Call the converter with your token:

curl -X POST https://jsontotoon.in/api/convert \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_TOKEN_HERE" \
  -d '{"json":{"hello":"world"},"indentation":"none","keyFolding":"safe","delimiter":","}'

Upload JSON file via multipart (returns toon.txt):

curl -X POST https://jsontotoon.in/api/convert \
  -H "x-api-key: YOUR_TOKEN_HERE" \
  -F file=@data.json \
  -F indentation=none \
  -F keyFolding=safe \
  -F delimiter=, \
  -F allowDuplicates=false \
  --output toon.txt