claims_
Registry Context
RFC 8414 does not define claims_locales_supported. It permits metadata parameters defined by other specifications and permits other claims in successful authorization server metadata responses.
Technical Summary
In an RFC 8414 authorization server metadata response, claims_locales_supported is an additional claim rather than a metadata value defined by RFC 8414 Section 2. Because it returns multiple values, RFC 8414 Section 3.2 represents it as a JSON array and requires omission when it has zero elements.
When Used
Its OpenID Connect-specific semantics are defined outside RFC 8414; RFC 8414 only establishes how additional, multi-valued claims are carried in an OAuth authorization server metadata response.
Normative Requirements
Authorization servers
RFC 8414 - Section 2
use additional authorization server metadata parameters.
Condition: when publishing parameters beyond those defined by RFC 8414
Additional authorization server metadata parameters MAY also be used.
Authorization server metadata responses
RFC 8414 - Section 3.2
omit claims with zero elements.
Condition: when a claim has zero elements
Claims with zero elements MUST be omitted from the response.
RFC 8414 - Section 3.2
return claims other than the metadata values defined in RFC 8414 Section 2.
Condition: when returning a successful metadata response
Other claims MAY also be returned.
Validation Guidance
Allow claims_locales_supported as an additional metadata claim; do not reject it solely because RFC 8414 Section 2 does not define it.
When claims_locales_supported returns multiple values, verify that its value is a JSON array.
If claims_locales_supported is an empty array, report an error because claims with zero elements must be omitted.
Reference
Details
- Entry Id
claims_locales_ supported - Metadata Name
claims_locales_ supported - Metadata Description
Languages and scripts supported for values in Claims being returned, represented as a JSON array of BCP 47 RFC5646 language tag values- Change Controller
OpenID_Foundation_ Artifact_ Binding_ WG - Reference
OpenID Connect Discovery 1.0 - Section 3