Authentication

All requests (except /health) require the X-API-Key header:

X-API-Key: lufs_your_key_here

Keys are created in the bot and shown only once. Save it immediately.

Rate Limits

Parameter	Value
Requests per minute	20
Analyses per month	1,000
Max file size	50 MB
Max URL length	2,048 characters
Concurrent analyses	4 (server-wide)

When a limit is exceeded, the API returns 429 Too Many Requests with a Retry-After header.