X-dev-access Yes -

Setting access to "yes" or * (wildcard) is generally safe for development environments but should be restricted in production to specific domains for security reasons.

Every request using x-dev-access: yes is logged with: x-dev-access yes

Here is the configuration for the platforms most likely associated with "x-dev-access": Setting access to "yes" or * (wildcard) is

x-dev-access: yes is a that turns on extra capabilities in controlled environments. Its strength is explicitness – you know exactly when you’re getting dev-only access. Its weakness is security if not combined with stronger guards. x-dev-access yes

x-dev-access: yes

Are you trying to or debug an API that requires this header?