FeatureFence – API Playground
Pick a language, paste code, set targets, then Run. The JSON result and exact cURL appear on the right.
API Base URL
Endpoint
GET /api/status
POST /api/lint
POST /api/echo
Language
javascript
css
html
python
Targets (Browserslist)
Code
document.startViewTransition(() => { console.log("demo"); });
Run
Status:
idle
Result JSON
(awaiting run)
cURL used