Authentication

Every S3 gateway request requires an API key in the header.

Pass your API key in the `api-key` HTTP header on every `/api/s3` request. Keys are tied to a single tenant and inherit that tenant's plan limits.

bash

curl -H "api-key: YOUR_API_KEY" https://syncgate.clairemontferrond.net/api/s3/syncgate/your-slug/uploads/file.pdf

Warning Never embed API keys in frontend JavaScript or mobile apps. Call SyncGate from your server-side application only.