field Registered
Verified 2026-09-18 · registry updated
2026-08-28Allow
Lists methods supported by a resource.
Send Allow with 405 Method Not Allowed and use it for OPTIONS capability responses where appropriate.
httpheadermethods
Reference (http)
Allow: GET, HEAD, OPTIONS
Send Allow with 405 Method Not Allowed and use it for OPTIONS capability responses where appropriate.
Common mistakes
- Listing methods that the endpoint accepts syntactically but does not authorize.
IANA registry: http-fields/field-names
Registry reference: RFC 9110, Section 10.2.1: HTTP Semantics