OPTIONS Registered Safe Idempotent
Verified 2026-09-18 · registry updated
2026-06-17OPTIONS
Describes communication options for a target resource or server.
Use OPTIONS for capability discovery and CORS preflight handling.
httpmethodscors
Reference (http)
OPTIONS /api HTTP/1.1 Origin: https://app.example.com
Use OPTIONS for capability discovery and CORS preflight handling.
Common mistakes
- Treating an OPTIONS response as authorization to perform an action.
Registry reference: rfc9110
Sources