OAuth Parameters

Created
2012-07-27
Last Updated
2026-08-24
Available Formats

XML
HTML
TXT

Registries Included Below

OAuth Access Token Types

Registration Procedure(s)
Specification Required
Expert(s)
Hannes Tschofenig, Mike Jones
Reference
[RFC 6749][RFC 8414]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 6749]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Name Additional Token Endpoint Response Parameters HTTP Authentication Scheme(s) Change Controller Reference
Bearer Bearer IETF [RFC 6750]
N_A IESG [RFC 8693, Section 2.2.1]
PoP cnf, rs_cnf (see [RFC 8747, Section 3.1] and [RFC 9201, Section 3.2]). N/A IETF [RFC 9200]
DPoP DPoP IETF [RFC 9449]

OAuth Authorization Endpoint Response Types

Registration Procedure(s)
Specification Required
Expert(s)
Hannes Tschofenig, Mike Jones
Reference
[RFC 6749]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 6749]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Name Change Controller Reference
code IETF [RFC 6749]
code id_token [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
code id_token token [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
code token [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
id_token [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
id_token token [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
none [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
token IETF [RFC 6749]
vp_token [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8]
vp_token id_token [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8]

OAuth Extensions Error Registry

Registration Procedure(s)
Specification Required
Expert(s)
Hannes Tschofenig, Mike Jones
Reference
[RFC 6749]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 6749]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Name Usage Location Protocol Extension Change Controller Reference
invalid_request authorization endpoint, token endpoint, resource access error response OAuth 2.0 Authorization Framework, bearer access token type IETF [RFC 6749][RFC 6750]
unauthorized_client authorization endpoint, token endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
access_denied authorization endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
unsupported_response_type authorization endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
invalid_scope authorization endpoint, token endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
server_error authorization endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
temporarily_unavailable authorization endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
invalid_client token endpoint, authorization endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
invalid_grant token endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
unsupported_grant_type token endpoint OAuth 2.0 Authorization Framework IETF [RFC6749]
invalid_token resource access error response bearer access token type IETF [RFC 6750]
insufficient_scope resource access error response bearer access token type IETF [RFC 6750]
unsupported_token_type revocation endpoint error response token revocation endpoint IETF [RFC 7009]
interaction_required authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
login_required authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
account_selection_required authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
consent_required authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
invalid_request_uri authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
invalid_request_object authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
request_not_supported authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
request_uri_not_supported authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
registration_not_supported authorization endpoint OpenID Connect [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
need_info (and its subsidiary parameters) authorization server response, token endpoint Kantara UMA [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.6]
request_denied authorization server response, token endpoint Kantara UMA [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.6]
request_submitted (and its subsidiary parameters) authorization server response, token endpoint Kantara UMA [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.6]
invalid_redirect_uri registration endpoint Dynamic Client Registration IETF [RFC 7591, Section 3.2.2]
invalid_client_metadata registration endpoint Dynamic Client Registration IETF [RFC 7591, Section 3.2.2]
invalid_software_statement registration endpoint Dynamic Client Registration IETF [RFC 7591, Section 3.2.2]
unapproved_software_statement registration endpoint Dynamic Client Registration IETF [RFC 7591, Section 3.2.2]
authorization_pending Token endpoint response [RFC 8628] IETF [RFC 8628, Section 3.5]
access_denied Token endpoint response [RFC 8628] IETF [RFC 8628, Section 3.5]
slow_down Token endpoint response [RFC 8628] IETF [RFC 8628, Section 3.5]
expired_token Token endpoint response [RFC 8628] IETF [RFC 8628, Section 3.5]
invalid_target implicit grant error response, token error response resource parameter IESG [RFC 8707]
unsupported_pop_key token error response [RFC 9200] IETF [RFC 9200, Section 5.8.3]
incompatible_ace_profiles token error response [RFC 9200] IETF [RFC 9200, Section 5.8.3]
invalid_authorization_details token endpoint, authorization endpoint OAuth 2.0 Rich Authorization Requests IETF [RFC 9396, Section 5]
invalid_dpop_proof token error response, resource access error response Demonstrating Proof of Possession (DPoP) IETF [RFC 9449]
use_dpop_nonce token error response, resource access error response Demonstrating Proof of Possession (DPoP) IETF [RFC 9449]
insufficient_user_authentication resource access error response OAuth 2.0 Step Up Authentication Challenge Protocol IETF [RFC 9470, Section 3]
invalid_issuer authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
invalid_subject authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
invalid_trust_anchor authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
invalid_trust_chain authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
invalid_metadata authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
not_found authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
unsupported_parameter authorization endpoint OpenID Federation [OpenID_Foundation_Artifact_Binding_WG] [Section 8.9 of OpenID Federation 1.0]
vp_formats_not_supported authorization endpoint, token endpoint OpenID for Verifiable Presentations [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8.5]
invalid_request_uri_method authorization endpoint OpenID for Verifiable Presentations [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8.5]
wallet_unavailable authorization endpoint, token endpoint OpenID for Verifiable Presentations [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8.5]

OAuth Parameters

Registration Procedure(s)
Specification Required
Expert(s)
Hannes Tschofenig, Mike Jones
Reference
[RFC 6749]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 6749]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Name Parameter Usage Location Change Controller Reference
client_id authorization request, token request IETF [RFC 6749]
client_secret token request IETF [RFC 6749]
response_type authorization request IETF [RFC 6749]
redirect_uri authorization request, token request IETF [RFC 6749]
scope authorization request, authorization response, token request, token response IETF [RFC 6749]
state authorization request, authorization response IETF [RFC 6749]
code authorization response, token request IETF [RFC 6749]
error authorization response, token response IETF [RFC 6749]
error_description authorization response, token response IETF [RFC 6749]
error_uri authorization response, token response IETF [RFC 6749]
grant_type token request IETF [RFC 6749]
access_token authorization response, token response IETF [RFC 6749]
token_type authorization response, token response IETF [RFC 6749]
expires_in authorization response, token response IETF [RFC 6749]
username token request IETF [RFC 6749]
password token request IETF [RFC 6749]
refresh_token token request, token response IETF [RFC 6749]
nonce authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
display authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
prompt authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
max_age authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
ui_locales authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
claims_locales authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
id_token_hint authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
login_hint authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
acr_values authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
claims authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
registration authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
request authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
request_uri authorization request [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
id_token authorization response, access token response [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Core 1.0 incorporating errata set 1]
session_state authorization response, access token response [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Session Management 1.0, Section 2]
assertion token request IESG [RFC 7521]
client_assertion token request IESG [RFC 7521]
client_assertion_type token request IESG [RFC 7521]
code_verifier token request IESG [RFC 7636]
code_challenge authorization request IESG [RFC 7636]
code_challenge_method authorization request IESG [RFC 7636]
claim_token client request, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.1]
pct client request, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.1]
pct authorization server response, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.5]
rpt client request, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.1]
ticket client request, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.1]
upgraded authorization server response, token endpoint [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.3.5]
vtr authorization request, token request IESG [RFC 8485]
device_code token request IESG [RFC 8628, Section 3.1]
resource authorization request, token request IESG [RFC 8707]
audience token request IESG [RFC 8693, Section 2.1]
requested_token_type token request IESG [RFC 8693, Section 2.1]
subject_token token request IESG [RFC 8693, Section 2.1]
subject_token_type token request IESG [RFC 8693, Section 2.1]
actor_token token request IESG [RFC 8693, Section 2.1]
actor_token_type token request IESG [RFC 8693, Section 2.1]
issued_token_type token response IESG [RFC 8693, Section 2.2.1]
response_mode Authorization Request [OpenID_Foundation_Artifact_Binding_WG] [OAuth 2.0 Multiple Response Type Encoding Practices]
nfv_token Access Token Response [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
iss authorization request, authorization response IETF [RFC 9207, Section 2][RFC 9101][RFC 7519, Section 4.1.1]
sub authorization request IETF [RFC 7519, Section 4.1.2][RFC 9101]
aud authorization request IETF [RFC 7519, Section 4.1.3][RFC 9101]
exp authorization request IETF [RFC 7519, Section 4.1.4][RFC 9101]
nbf authorization request IETF [RFC 7519, Section 4.1.5][RFC 9101]
iat authorization request IETF [RFC 7519, Section 4.1.6][RFC 9101]
jti authorization request IETF [RFC 7519, Section 4.1.7][RFC 9101]
ace_profile token response IETF [RFC9200, Sections 5.8.2, 5.8.4.3]
nonce1 client-rs request IETF [RFC 9203]
nonce2 rs-client response IETF [RFC 9203]
ace_client_recipientid client-rs request IETF [RFC 9203]
ace_server_recipientid rs-client response IETF [RFC 9203]
req_cnf token request IETF [RFC 9201, Section 5]
rs_cnf token response IETF [RFC 9201, Section 5]
cnf token response IETF [RFC 9201, Section 5]
authorization_details authorization request, token request, token response IETF [RFC 9396]
dpop_jkt authorization request IETF [RFC 9449, Section 10]
sign_info client-rs request, rs-client response IETF [RFC 9594]
kdcchallenge rs-client response IETF [RFC 9594]
trust_chain authorization request [OpenID_Foundation_Artifact_Binding_WG] [Section 12.1.1.1.1 of OpenID Federation 1.0]
dcql_query authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.1]
client_metadata authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.1]
request_uri_method authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.1]
transaction_data authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.1]
wallet_nonce authorization request, token response [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.10]
response_uri authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8.2]
vp_token authorization request, token response [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 8.1]
verifier_info authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Section 5.1]
expected_origins authorization request [OpenID_Foundation_Digital_Credentials_Protocols_WG] [OpenID for Verifiable Presentations 1.0, Appendix A.2]
ecdh_info client-rs request, rs-client response IETF [RFC-ietf-ace-key-groupcomm-oscore-21]
kdc_dh_creds client-rs request, rs-client response IETF [RFC-ietf-ace-key-groupcomm-oscore-21]

OAuth Token Type Hints

Registration Procedure(s)
Specification Required
Expert(s)
Torsten Lodderstedt, Mike Jones
Reference
[RFC 7009]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 7009]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Hint Value Change Controller Reference
access_token IETF [RFC 7009]
refresh_token IETF [RFC 7009]
pct [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 3.7]

OAuth URI

Registration Procedure(s)
Specification Required
Expert(s)
Hannes Tschofenig, Mike Jones
Reference
[RFC 6755]
Note
Prefix: urn:ietf:params:oauth
Available Formats

CSV
URN Common Name Change Controller Reference
urn:ietf:params:oauth:grant-type:jwt-bearer JWT Bearer Token Grant Type Profile for OAuth 2.0 IESG [RFC 7523][RFC-ietf-oauth-rfc7523bis-11]
urn:ietf:params:oauth:client-assertion-type:jwt-bearer JWT Bearer Token Profile for OAuth 2.0 Client Authentication IESG [RFC 7523][RFC-ietf-oauth-rfc7523bis-11]
urn:ietf:params:oauth:grant-type:saml2-bearer SAML 2.0 Bearer Assertion Grant Type Profile for OAuth 2.0 IESG [RFC 7522][RFC-ietf-oauth-rfc7523bis-11]
urn:ietf:params:oauth:client-assertion-type:saml2-bearer SAML 2.0 Bearer Assertion Profile for OAuth 2.0 Client Authentication IESG [RFC 7522][RFC-ietf-oauth-rfc7523bis-11]
urn:ietf:params:oauth:token-type:jwt JSON Web Token (JWT) Token Type IESG [RFC 7519]
urn:ietf:params:oauth:grant-type:device_code Device flow grant type for OAuth 2.0 IESG [RFC 8628, Section 3.1]
urn:ietf:params:oauth:grant-type:token-exchange Token exchange grant type for OAuth 2.0 IESG [RFC 8693, Section 2.1]
urn:ietf:params:oauth:token-type:access_token Token type URI for an OAuth 2.0 access token IESG [RFC 8693, Section 3]
urn:ietf:params:oauth:token-type:refresh_token Token type URI for an OAuth 2.0 refresh token IESG [RFC 8693, Section 3]
urn:ietf:params:oauth:token-type:id_token Token type URI for an ID Token IESG [RFC 8693, Section 3]
urn:ietf:params:oauth:token-type:saml1 Token type URI for a base64url-encoded SAML 1.1 assertion IESG [RFC 8693, Section 3]
urn:ietf:params:oauth:token-type:saml2 Token type URI for a base64url-encoded SAML 2.0 assertion IESG [RFC 8693, Section 3]
urn:ietf:params:oauth:request_uri A URN Sub-Namespace for OAuth Request URIs. IESG [RFC 9126, Section 2.2]
urn:ietf:params:oauth:jwk-thumbprint JWK Thumbprint URI IESG [RFC 9278]
urn:ietf:params:oauth:ckt COSE Key Thumbprint URI IETF [RFC 9679]

OAuth Dynamic Client Registration Metadata

Registration Procedure(s)
Specification Required
Expert(s)
Justin Richer
Reference
[RFC 7591]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 7591]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Client Metadata Name Client Metadata Description Change Controller Reference
redirect_uris Array of redirection URIs for use in redirect-based flows IESG [RFC 7591]
token_endpoint_auth_method Requested authentication method for the token endpoint IESG [RFC 7591]
grant_types Array of OAuth 2.0 grant types that the client may use IESG [RFC 7591]
response_types Array of the OAuth 2.0 response types that the client may use IESG [RFC 7591]
client_name Human-readable name of the client to be presented to the user IESG [RFC 7591]
client_uri URL of a web page providing information about the client IESG [RFC 7591]
logo_uri URL that references a logo for the client IESG [RFC 7591]
scope Space-separated list of OAuth 2.0 scope values IESG [RFC 7591]
contacts Array of strings representing ways to contact people responsible for this client, typically email addresses IESG [RFC 7591]
tos_uri URL that points to a human-readable terms of service document for the client IESG [RFC 7591]
policy_uri URL that points to a human-readable policy document for the client IESG [RFC 7591]
jwks_uri URL referencing the client's JSON Web Key Set [RFC 7517] document representing the client's public keys IESG [RFC 7591]
jwks Client's JSON Web Key Set [RFC 7517] document representing the client's public keys IESG [RFC 7591]
software_id Identifier for the software that comprises a client IESG [RFC 7591]
software_version Version identifier for the software that comprises a client IESG [RFC 7591]
client_id Client identifier IESG [RFC 7591]
client_secret Client secret IESG [RFC 7591]
client_id_issued_at Time at which the client identifier was issued IESG [RFC 7591]
client_secret_expires_at Time at which the client secret will expire IESG [RFC 7591]
software_statement A software statement containing client metadata values about the client software as claims. This is a string value containing the entire signed JWT. IESG [RFC 7591]
registration_access_token OAuth 2.0 Bearer Token used to access the client configuration endpoint IESG [RFC 7592]
registration_client_uri Fully qualified URI of the client registration endpoint IESG [RFC 7592]
application_type Kind of the application -- "native" or "web" [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
sector_identifier_uri URL using the https scheme to be used in calculating Pseudonymous Identifiers by the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
subject_type subject_type requested for responses to this Client -- "pairwise" or "public" [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
id_token_signed_response_alg JWS alg algorithm REQUIRED for signing the ID Token issued to this Client [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
id_token_encrypted_response_alg JWE alg algorithm REQUIRED for encrypting the ID Token issued to this Client [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
id_token_encrypted_response_enc JWE enc algorithm REQUIRED for encrypting the ID Token issued to this Client [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
userinfo_signed_response_alg JWS alg algorithm REQUIRED for signing UserInfo Responses [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
userinfo_encrypted_response_alg JWE alg algorithm REQUIRED for encrypting UserInfo Responses [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
userinfo_encrypted_response_enc JWE enc algorithm REQUIRED for encrypting UserInfo Responses [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
request_object_signing_alg JWS alg algorithm that MUST be used for signing Request Objects sent to the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
request_object_encryption_alg JWE alg algorithm the RP is declaring that it may use for encrypting Request Objects sent to the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
request_object_encryption_enc JWE enc algorithm the RP is declaring that it may use for encrypting Request Objects sent to the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
token_endpoint_auth_signing_alg JWS alg algorithm that MUST be used for signing the JWT used to authenticate the Client at the Token Endpoint for the private_key_jwt and client_secret_jwt authentication methods [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
default_max_age Default Maximum Authentication Age [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
require_auth_time Boolean value specifying whether the auth_time Claim in the ID Token is REQUIRED [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
default_acr_values Default requested Authentication Context Class Reference values [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
initiate_login_uri URI using the https scheme that a third party can use to initiate a login by the RP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
request_uris Array of request_uri values that are pre-registered by the RP for use at the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 2]
claims_redirect_uris claims redirection endpoints [Kantara_UMA_WG] [UMA 2.0 Grant for OAuth 2.0, Section 2]
nfv_token_signed_response_alg JWS alg algorithm required for signing the nfv Token issued to this Client [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
nfv_token_encrypted_response_alg JWE alg algorithm required for encrypting the nfv Token issued to this Client [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
nfv_token_encrypted_response_enc JWE enc algorithm required for encrypting the nfv Token issued to this Client [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
tls_client_certificate_bound_access_tokens Indicates the client's intention to use mutual-TLS client certificate-bound access tokens. [IESG] [RFC 8705, Section 3.4]
tls_client_auth_subject_dn String value specifying the expected subject DN of the client certificate. [IESG] [RFC 8705, Section 2.1.2]
tls_client_auth_san_dns String value specifying the expected dNSName SAN entry in the client certificate. [IESG] [RFC 8705, Section 2.1.2]
tls_client_auth_san_uri String value specifying the expected uniformResourceIdentifier SAN entry in the client certificate. [IESG] [RFC 8705, Section 2.1.2]
tls_client_auth_san_ip String value specifying the expected iPAddress SAN entry in the client certificate. [IESG] [RFC 8705, Section 2.1.2]
tls_client_auth_san_email String value specifying the expected rfc822Name SAN entry in the client certificate. [IESG] [RFC 8705, Section 2.1.2]
require_signed_request_object Indicates where authorization request needs to be protected as Request Object and provided through either request or request_uri parameter. [IETF] [RFC 9101, Section 10.5]
require_pushed_authorization_requests Indicates whether the client is required to use PAR to initiate authorization requests. [IESG] [RFC 9126, Section 6]
introspection_signed_response_alg String value indicating the client’s desired introspection response signing algorithm [IETF] [RFC 9701, Section 6]
introspection_encrypted_response_alg String value specifying the desired introspection response content key encryption algorithm (alg value) [IETF] [RFC 9701, Section 6]
introspection_encrypted_response_enc String value specifying the desired introspection response content encryption algorithm (enc value) [IETF] [RFC 9701, Section 6]
frontchannel_logout_uri RP URL that will cause the RP to log itself out when rendered in an iframe by the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Front-Channel Logout 1.0, Section 2]
frontchannel_logout_session_required Boolean value specifying whether the RP requires that a sid (session ID) query parameter be included to identify the RP session with the OP when the frontchannel_logout_uri is used [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Front-Channel Logout 1.0, Section 2]
backchannel_logout_uri RP URL that will cause the RP to log itself out when sent a Logout Token by the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Back-Channel Logout 1.0, Section 2.2]
backchannel_logout_session_required Boolean value specifying whether the RP requires that a sid (session ID) Claim be included in the Logout Token to identify the RP session with the OP when the backchannel_logout_uri is used [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Back-Channel Logout 1.0, Section 2.2]
post_logout_redirect_uris Array of URLs supplied by the RP to which it MAY request that the End-User's User Agent be redirected using the post_logout_redirect_uri parameter after a logout has been performed [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect RP-Initiated Logout 1.0, Section 3.1]
authorization_details_types Indicates what authorization details types the client uses. [IETF] [RFC 9396, Section 10]
dpop_bound_access_tokens Boolean value specifying whether the client always uses DPoP for token requests [IETF] [RFC 9449, Section 5.2]
client_registration_types An array of strings specifying the client registration types the RP wants to use [OpenID_Foundation_Artifact_Binding_WG] [Section 5.1.2 of OpenID Federation 1.0]
signed_jwks_uri URL referencing a signed JWT having the client's JWK Set document as its payload [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.1 of OpenID Federation 1.0]
organization_name Human-readable name representing the organization owning this client [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
description Human-readable brief description of this client presentable to the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
keywords JSON array with one or more strings representing search keywords, tags, categories, or labels that apply to this client [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
information_uri URL for documentation of additional information about this client viewable by the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
organization_uri URL of a Web page for the organization owning this client [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
use_mtls_endpoint_aliases Boolean value indicating the requirement for a client to use mutual-TLS endpoint aliases [RFC8705] declared by the authorization server in its metadata even beyond the Mutual-TLS Client Authentication and Certificate-Bound Access Tokens use cases. [OpenID_Foundation_FAPI_WG] [Section 5.2.2.1.1 of FAPI 2.0 Security Profile]
encrypted_response_enc_values_supported Non-empty array of strings, where each string is a JWE [RFC 7516] enc algorithm that can be used as the content encryption algorithm for encrypting the Response [OpenID_Foundation_Digital_Credentials_Protocols_WG] [Section 5.1 of OpenID for Verifiable Presentations 1.0]
vp_formats_supported An object containing a list of name/value pairs, where the name is a string identifying a Credential format supported by the Verifier [OpenID_Foundation_Digital_Credentials_Protocols_WG] [Section 11.1 of OpenID for Verifiable Presentations 1.0]
subject_types_supported JSON array containing a list of the subject_type values supported by the RP [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
id_token_signing_alg_values_supported JSON array containing a list of the [JWS] alg values supported by the RP when validating the ID Token signature [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
id_token_encryption_alg_values_supported JSON array containing a list of the [JWE] alg values supported by the RP when decrypting the ID Token [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
id_token_encryption_enc_values_supported JSON array containing a list of the JWE enc values supported by the RP when decrypting the ID Token [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
userinfo_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the RP when validating the UserInfo Response signature [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
userinfo_encryption_alg_values_supported JSON array containing a list of the JWE alg values supported by the RP when decrypting the UserInfo Response [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
userinfo_encryption_enc_values_supported JSON array containing a list of the JWE enc values supported by the RP when decrypting the UserInfo Response [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
request_object_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the Client when signing Request Objects [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
request_object_encryption_alg_values_supported JSON array containing a list of the JWE alg values supported by the Client when encrypting Request Objects [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
request_object_encryption_enc_values_supported JSON array containing a list of the JWE enc values supported by the Client when encrypting Request Objects [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
token_endpoint_auth_methods_supported JSON array containing a list of the Client Authentication methods supported by the Client [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
token_endpoint_auth_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the Client when signing the JWT used to authenticate the Client at the Token Endpoint [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
backchannel_authentication_request_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the Client when signing the JWT used for CIBA authentication requests [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
authorization_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the Client for signed responses [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
authorization_encryption_alg_values_supported JSON array containing a list of the JWE alg values supported by the Client for encrypted responses [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
authorization_encryption_enc_values_supported JSON array containing a list of the JWE enc values supported by the Client for encrypted responses [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
introspection_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the Client when validating the Introspection Response signature [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
introspection_encryption_alg_values_supported JSON array containing a list of the JWE alg values supported by the Client when decrypting the Introspection Response [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
introspection_encryption_enc_values_supported JSON array containing a list of the JWE enc values supported by the Client when decrypting the Introspection Response [OpenID_Foundation_Artifact_Binding_WG] [Section 2 of OpenID Connect Relying Party Metadata Choices 1.0]
authorization_signed_response_alg String value indicating the client's desired authorization response signing algorithm. IESG [Section 3 of JWT Secured Authorization Response Mode for OAuth 2.0 (JARM) incorporating errata set 1]
authorization_encrypted_response_alg String value specifying the desired authorization response encryption algorithm (alg value). IESG [Section 3 of JWT Secured Authorization Response Mode for OAuth 2.0 (JARM) incorporating errata set 1]
authorization_encrypted_response_enc String value specifying the desired authorization response encryption algorithm (enc value). IESG [Section 3 of JWT Secured Authorization Response Mode for OAuth 2.0 (JARM) incorporating errata set 1]

OAuth Token Endpoint Authentication Methods

Registration Procedure(s)
Specification Required
Expert(s)
Justin Richer
Reference
[RFC 7591][RFC 8414]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 7591]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Token Endpoint Authentication Method Name Change Controller Reference
none IESG [RFC 7591]
client_secret_post IESG [RFC 7591]
client_secret_basic IESG [RFC 7591]
client_secret_jwt IESG [OpenID Connect Core 1.0, Section 9][RFC-ietf-oauth-rfc7523bis-11]
private_key_jwt IESG [OpenID Connect Core 1.0, Section 9][RFC-ietf-oauth-rfc7523bis-11]
tls_client_auth IESG [RFC 8705, Section 2.1.1]
self_signed_tls_client_auth IESG [RFC 8705, Section 2.2.1]

PKCE Code Challenge Methods

Registration Procedure(s)
Specification Required
Expert(s)
John Bradley, Mike Jones
Reference
[RFC 7636]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 7636]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Code Challenge Method Parameter Name Change Controller Reference
plain IESG [RFC 7636, Section 4.2]
S256 IESG [RFC 7636, Section 4.2]

OAuth Token Introspection Response

Registration Procedure(s)
Specification Required
Expert(s)
Justin Richer
Reference
[RFC 7662]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 7662]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Name Description Change Controller Reference
active Token active status IESG [RFC 7662, Section 2.2]
username User identifier of the resource owner IESG [RFC 7662, Section 2.2]
client_id Client identifier of the client IESG [RFC 7662, Section 2.2]
scope Authorized scopes of the token IESG [RFC 7662, Section 2.2]
token_type Type of the token IESG [RFC 7662, Section 2.2]
exp Expiration timestamp of the token IESG [RFC 7662, Section 2.2]
iat Issuance timestamp of the token IESG [RFC 7662, Section 2.2]
nbf Timestamp which the token is not valid before IESG [RFC 7662, Section 2.2]
sub Subject of the token IESG [RFC 7662, Section 2.2]
aud Audience of the token IESG [RFC 7662, Section 2.2]
iss Issuer of the token IESG [RFC 7662, Section 2.2]
jti Unique identifier of the token IESG [RFC 7662, Section 2.2]
permissions array of objects, each describing a scoped, time-limitable permission for a resource [Kantara_UMA_WG] [Federated Authorization for UMA 2.0, Section 5.1.1]
vot Vector of Trust value IESG [RFC 8485]
vtm Vector of Trust trustmark URL IESG [RFC 8485]
act Actor IESG [RFC 8693, Section 4.1]
may_act Authorized Actor - the party that is authorized to become the actor IESG [RFC 8693, Section 4.4]
cnf Confirmation IESG [RFC 7800][RFC 8705]
ace_profile The ACE profile used between the client and RS. IETF [RFC 9200, Section 5.9.2]
cnonce "client-nonce". A nonce previously provided to the AS by the RS via the client. Used to verify token freshness when the RS cannot synchronize its clock with the AS. IETF [RFC 9200, Section 5.9.2]
cti "CWT ID". The identifier of a CWT as defined in [RFC 8392]. IETF [RFC 9200, Section 5.9.2]
exi "Expires in". Lifetime of the token in seconds from the time the RS first sees it. Used to implement a weaker form of token expiration for devices that cannot synchronize their internal clocks. IETF [RFC 9200, Section 5.9.2]
authorization_details The member authorization_details contains a JSON array of JSON objects representing the rights of the access token. Each JSON object contains the data to specify the authorization requirements for a certain type of resource. IETF [RFC 9396, Section 9.2]
acr Authentication Context Class Reference IETF [RFC 9470, Section 6.2]
auth_time Time when the user authentication occurred IETF [RFC 9470, Section 6.2]

OAuth Authorization Server Metadata

Registration Procedure(s)
Specification Required
Expert(s)
Mike Jones, Nat Sakimura, John Bradley, Dick Hardt
Reference
[RFC 8414]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 8414]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Metadata Name Metadata Description Change Controller Reference
issuer Authorization server's issuer identifier URL IESG [RFC 8414, Section 2]
authorization_endpoint URL of the authorization server's authorization endpoint IESG [RFC 8414, Section 2]
token_endpoint URL of the authorization server's token endpoint IESG [RFC 8414, Section 2]
jwks_uri URL of the authorization server's JWK Set document IESG [RFC 8414, Section 2]
registration_endpoint URL of the authorization server's OAuth 2.0 Dynamic Client Registration Endpoint IESG [RFC 8414, Section 2]
scopes_supported JSON array containing a list of the OAuth 2.0 "scope" values that this authorization server supports IESG [RFC 8414, Section 2]
response_types_supported JSON array containing a list of the OAuth 2.0 "response_type" values that this authorization server supports IESG [RFC 8414, Section 2]
response_modes_supported JSON array containing a list of the OAuth 2.0 "response_mode" values that this authorization server supports IESG [RFC 8414, Section 2]
grant_types_supported JSON array containing a list of the OAuth 2.0 grant type values that this authorization server supports IESG [RFC 8414, Section 2]
token_endpoint_auth_methods_supported JSON array containing a list of client authentication methods supported by this token endpoint IESG [RFC 8414, Section 2]
token_endpoint_auth_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms supported by the token endpoint for the signature on the JWT used to authenticate the client at the token endpoint IESG [RFC 8414, Section 2]
service_documentation URL of a page containing human-readable information that developers might want or need to know when using the authorization server IESG [RFC 8414, Section 2]
ui_locales_supported Languages and scripts supported for the user interface, represented as a JSON array of language tag values from BCP 47 [RFC 5646] IESG [RFC 8414, Section 2]
op_policy_uri URL that the authorization server provides to the person registering the client to read about the authorization server's requirements on how the client can use the data provided by the authorization server IESG [RFC 8414, Section 2]
op_tos_uri URL that the authorization server provides to the person registering the client to read about the authorization server's terms of service IESG [RFC 8414, Section 2]
revocation_endpoint URL of the authorization server's OAuth 2.0 revocation endpoint IESG [RFC 8414, Section 2]
revocation_endpoint_auth_methods_supported JSON array containing a list of client authentication methods supported by this revocation endpoint IESG [RFC 8414, Section 2]
revocation_endpoint_auth_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms supported by the revocation endpoint for the signature on the JWT used to authenticate the client at the revocation endpoint IESG [RFC 8414, Section 2]
introspection_endpoint URL of the authorization server's OAuth 2.0 introspection endpoint IESG [RFC 8414, Section 2]
introspection_endpoint_auth_methods_supported JSON array containing a list of client authentication methods supported by this introspection endpoint IESG [RFC 8414, Section 2]
introspection_endpoint_auth_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms supported by the introspection endpoint for the signature on the JWT used to authenticate the client at the introspection endpoint IESG [RFC 8414, Section 2]
code_challenge_methods_supported PKCE code challenge methods supported by this authorization server IESG [RFC 8414, Section 2]
signed_metadata Signed JWT containing metadata values about the authorization server as claims IESG [RFC 8414, Section 2.1]
device_authorization_endpoint URL of the authorization server's device authorization endpoint IESG [RFC 8628, Section 4]
tls_client_certificate_bound_access_tokens Indicates authorization server support for mutual-TLS client certificate-bound access tokens. IESG [RFC 8705, Section 3.3]
mtls_endpoint_aliases JSON object containing alternative authorization server endpoints, which a client intending to do mutual TLS will use in preference to the conventional endpoints. IESG [RFC 8705, Section 5]
nfv_token_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms supported by the server for signing the JWT used as NFV Token [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
nfv_token_encryption_alg_values_supported JSON array containing a list of the JWE encryption algorithms (alg values) supported by the server to encode the JWT used as NFV Token [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
nfv_token_encryption_enc_values_supported JSON array containing a list of the JWE encryption algorithms (enc values) supported by the server to encode the JWT used as NFV Token [ETSI] [ETSI GS NFV-SEC 022 V2.7.1]
userinfo_endpoint URL of the OP's UserInfo Endpoint [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
acr_values_supported JSON array containing a list of the Authentication Context Class References that this OP supports [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
subject_types_supported JSON array containing a list of the Subject Identifier types that this OP supports [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
id_token_signing_alg_values_supported JSON array containing a list of the JWS "alg" values supported by the OP for the ID Token [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
id_token_encryption_alg_values_supported JSON array containing a list of the JWE "alg" values supported by the OP for the ID Token [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
id_token_encryption_enc_values_supported JSON array containing a list of the JWE "enc" values supported by the OP for the ID Token [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
userinfo_signing_alg_values_supported JSON array containing a list of the JWS "alg" values supported by the UserInfo Endpoint [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
userinfo_encryption_alg_values_supported JSON array containing a list of the JWE "alg" values supported by the UserInfo Endpoint [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
userinfo_encryption_enc_values_supported JSON array containing a list of the JWE "enc" values supported by the UserInfo Endpoint [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
request_object_signing_alg_values_supported JSON array containing a list of the JWS "alg" values supported by the OP for Request Objects [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
request_object_encryption_alg_values_supported JSON array containing a list of the JWE "alg" values supported by the OP for Request Objects [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
request_object_encryption_enc_values_supported JSON array containing a list of the JWE "enc" values supported by the OP for Request Objects [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
display_values_supported JSON array containing a list of the "display" parameter values that the OpenID Provider supports [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
claim_types_supported JSON array containing a list of the Claim Types that the OpenID Provider supports [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
claims_supported JSON array containing a list of the Claim Names of the Claims that the OpenID Provider MAY be able to supply values for [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
claims_locales_supported Languages and scripts supported for values in Claims being returned, represented as a JSON array of BCP 47 [RFC 5646] language tag values [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
claims_parameter_supported Boolean value specifying whether the OP supports use of the "claims" parameter [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
request_parameter_supported Boolean value specifying whether the OP supports use of the "request" parameter [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
request_uri_parameter_supported Boolean value specifying whether the OP supports use of the "request_uri" parameter [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
require_request_uri_registration Boolean value specifying whether the OP requires any "request_uri" values used to be pre-registered [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Discovery 1.0, Section 3]
require_signed_request_object Indicates where authorization request needs to be protected as Request Object and provided through either request or request_uri parameter. IETF [RFC 9101, Section 10.5]
pushed_authorization_request_endpoint URL of the authorization server's pushed authorization request endpoint IESG [RFC 9126, Section 5]
require_pushed_authorization_requests Indicates whether the authorization server accepts authorization requests only via PAR. IESG [RFC 9126, Section 5]
introspection_signing_alg_values_supported JSON array containing a list of algorithms supported by the authorization server for introspection response signing IETF [RFC 9701, Section 7]
introspection_encryption_alg_values_supported JSON array containing a list of algorithms supported by the authorization server for introspection response content key encryption (alg value) IETF [RFC 9701, Section 7]
introspection_encryption_enc_values_supported JSON array containing a list of algorithms supported by the authorization server for introspection response content encryption (enc value) IETF [RFC 9701, Section 7]
authorization_response_iss_parameter_supported Boolean value indicating whether the authorization server provides the iss parameter in the authorization response. IETF [RFC 9207, Section 3]
check_session_iframe URL of an OP iframe that supports cross-origin communications for session state information with the RP Client, using the HTML5 postMessage API [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Session Management 1.0, Section 3.3]
frontchannel_logout_supported Boolean value specifying whether the OP supports HTTP-based logout, with true indicating support [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Front-Channel Logout 1.0, Section 3]
backchannel_logout_supported Boolean value specifying whether the OP supports back-channel logout, with true indicating support [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Back-Channel Logout 1.0, Section 2]
backchannel_logout_session_supported Boolean value specifying whether the OP can pass a sid (session ID) Claim in the Logout Token to identify the RP session with the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect Back-Channel Logout 1.0, Section 2]
end_session_endpoint URL at the OP to which an RP can perform a redirect to request that the End-User be logged out at the OP [OpenID_Foundation_Artifact_Binding_WG] [OpenID Connect RP-Initiated Logout 1.0, Section 2.1]
backchannel_token_delivery_modes_supported Supported CIBA authentication result delivery modes [OpenID_Foundation_MODRNA_WG] [OpenID Connect Client-Initiated Backchannel Authentication Flow - Core 1.0, Section 4]
backchannel_authentication_endpoint CIBA Backchannel Authentication Endpoint [OpenID_Foundation_MODRNA_WG] [OpenID Connect Client-Initiated Backchannel Authentication Flow - Core 1.0, Section 4]
backchannel_authentication_request_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms supported for validation of signed CIBA authentication requests [OpenID_Foundation_MODRNA_WG] [OpenID Connect Client-Initiated Backchannel Authentication Flow - Core 1.0, Section 4]
backchannel_user_code_parameter_supported Indicates whether the OP supports the use of the CIBA user_code parameter. [OpenID_Foundation_MODRNA_WG] [OpenID Connect Client-Initiated Backchannel Authentication Flow - Core 1.0, Section 4]
authorization_details_types_supported JSON array containing the authorization details types the AS supports IETF [RFC 9396, Section 10]
dpop_signing_alg_values_supported JSON array containing a list of the JWS algorithms supported for DPoP proof JWTs IETF [RFC 9449, Section 5.1]
client_registration_types_supported Client Registration Types Supported [OpenID_Foundation_Artifact_Binding_WG] [Section 5.1.3 of OpenID Federation 1.0]
federation_registration_endpoint Federation Registration Endpoint [OpenID_Foundation_Artifact_Binding_WG] [Section 5.1.3 of OpenID Federation 1.0]
signed_jwks_uri URL referencing a signed JWT having this authorization server's JWK Set document as its payload [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.1 of OpenID Federation 1.0]
jwks JSON Web Key Set document, passed by value [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.1 of OpenID Federation 1.0]
organization_name Human-readable name representing the organization owning this authorization server [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
display_name Human-readable name of the authorization server to be presented to the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
description Human-readable brief description of this authorization server presentable to the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
keywords JSON array with one or more strings representing search keywords, tags, categories, or labels that apply to this authorization server [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
contacts Array of strings representing ways to contact people responsible for this authorization server, typically email addresses [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
logo_uri URL that references a logo for the organization owning this authorization server [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
information_uri URL for documentation of additional information about this authorization server viewable by the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
organization_uri URL of a Web page for the organization owning this authorization server [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
protected_resources JSON array containing a list of resource identifiers for OAuth protected resources IETF [RFC 9728, Section 4]
status_list_aggregation_endpoint URL of the Authorization Server aggregating OAuth Token Status List URLs for token status management. IESG [RFC-ietf-oauth-status-list-21, Section 9]
identity_chaining_requested_token_types_supported JSON array containing a list of Token Type Identifiers supported as a requested_token_type in an Identity and Authorization Chaining Token Exchange [RFC 8693] request. IESG [RFC-ietf-oauth-identity-chaining-16, Section 3]

OAuth Protected Resource Metadata

Registration Procedure(s)
Specification Required
Expert(s)
Michael Jones, Dick Hardt
Reference
[RFC 9728]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC 9728]. If they approve, designated experts should notify 
IANA within two weeks. For assistance, please contact iana@iana.org. 
IANA does not monitor the list.
Available Formats

CSV
Metadata Name Metadata Description Change Controller Reference
resource Protected resource's resource identifier URL IETF [RFC 9728, Section 2]
authorization_servers JSON array containing a list of OAuth authorization server issuer identifiers IETF [RFC 9728, Section 2]
jwks_uri URL of the protected resource's JWK Set document IETF [RFC 9728, Section 2]
scopes_supported JSON array containing a list of the OAuth 2.0 scope values that are used in authorization requests to request access to this protected resource IETF [RFC 9728, Section 2]
bearer_methods_supported JSON array containing a list of the OAuth 2.0 bearer token presentation methods that this protected resource supports IETF [RFC 9728, Section 2]
resource_signing_alg_values_supported JSON array containing a list of the JWS signing algorithms (alg values) supported by the protected resource for signed content IETF [RFC 9728, Section 2]
resource_name Human-readable name of the protected resource IETF [RFC 9728, Section 2]
resource_documentation URL of a page containing human-readable information that developers might want or need to know when using the protected resource IETF [RFC 9728, Section 2]
resource_policy_uri URL of a page containing human-readable information about the protected resource's requirements on how the client can use the data provided by the protected resource IETF [RFC 9728, Section 2]
resource_tos_uri URL of a page containing human-readable information about the protected resource's terms of service IETF [RFC 9728, Section 2]
tls_client_certificate_bound_access_tokens Boolean value indicating protected resource support for mutual-TLS client certificate-bound access tokens IETF [RFC 9728, Section 2]
authorization_details_types_supported JSON array containing a list of the authorization details type values supported by the resource server when the authorization_details request parameter is used IETF [RFC 9728, Section 2]
dpop_signing_alg_values_supported JSON array containing a list of the JWS alg values supported by the resource server for validating DPoP proof JWTs IETF [RFC 9728, Section 2]
dpop_bound_access_tokens_required Boolean value specifying whether the protected resource always requires the use of DPoP-bound access tokens IETF [RFC 9728, Section 2]
signed_metadata Signed JWT containing metadata parameters about the protected resource as claims IETF [RFC 9728, Section 2.2]
signed_jwks_uri URL referencing a signed JWT having the protected resource's JWK Set document as its payload [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.1 of OpenID Federation 1.0]
jwks JSON Web Key Set document, passed by value [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.1 of OpenID Federation 1.0]
organization_name Human-readable name representing the organization owning this protected resource [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
description Human-readable brief description of this protected resource presentable to the End-User [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
keywords JSON array with one or more strings representing search keywords, tags, categories, or labels that apply to this protected resource [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
contacts Array of strings representing ways to contact people responsible for this protected resource, typically email addresses [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
logo_uri URL that references a logo for the organization owning this protected resource [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]
organization_uri URL of a Web page for the organization owning this protected resource [OpenID_Foundation_Artifact_Binding_WG] [Section 5.2.2 of OpenID Federation 1.0]

OAuth Status Types

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC-ietf-oauth-status-list-21]
Note
Registration requests should be sent to [oauth-ext-review@ietf.org], as 
described in [RFC-ietf-oauth-status-list-21]. If they approve, designated 
experts should notify IANA within two weeks. For assistance, please 
contact iana@iana.org. IANA does not monitor the list.
Available Formats

CSV
Status Type Name Status Type Description Status Type Value Change Controller Reference
VALID The status of the Referenced Token is valid, correct or legal. 0x00 IETF [RFC-ietf-oauth-status-list-21, Section 7]
INVALID The status of the Referenced Token is revoked, annulled, taken back, recalled or cancelled. 0x01 IETF [RFC-ietf-oauth-status-list-21, Section 7]
SUSPENDED The status of the Referenced Token is temporarily invalid, hanging or debarred from privilege. This state is usually temporary. 0x02 IETF [RFC-ietf-oauth-status-list-21, Section 7]
APPLICATION_SPECIFIC The status of the Referenced Token is application specific. 0x03 IETF [RFC-ietf-oauth-status-list-21, Section 7]
Unassigned 0x04-0x0B
APPLICATION_SPECIFIC The status of the Referenced Token is application specific. 0x0C-0x0F IETF [RFC-ietf-oauth-status-list-21, Section 7]
Unassigned 0x10-0xFF

Contact Information

ID Name Contact URI Last Updated
[ETSI] ETSI mailto:pnns&etsi.org 2019-07-22
[IESG] Internet Engineering Steering Group mailto:iesg&ietf.org
[IETF] Internet Engineering Task Force mailto:ietf&ietf.org
[Kantara_UMA_WG] Kantara Initiative User-Managed Access Work Group mailto:staff&kantarainitiative.org 2018-04-23
[OpenID_Foundation_Artifact_Binding_WG] OpenID Foundation Artifact Binding Working Group mailto:openid-specs-ab&lists.openid.net 2022-09-23
[OpenID_Foundation_Digital_Credentials_Protocols_WG] OpenID Foundation Digital Credentials Protocols Working Group mailto:openid-specs-digital-credentials-protocols&lists.openid.net 2025-10-03
[OpenID_Foundation_FAPI_WG] OpenID Foundation FAPI Working Group mailto:openid-specs-fapi&lists.openid.net 2025-04-28
[OpenID_Foundation_MODRNA_WG] OpenID Foundation MODRNA Working Group mailto:openid-specs-mobile-profile&lists.openid.net 2022-12-01