Oncoc4 Authentication

generated: '2026-08-04'
method: probed
source: https://oncoc4.com/.well-known/openid-configuration
name: OncoC4 authentication profile
description: >-
  OncoC4 publishes no developer-facing API and therefore no developer
  authentication scheme. The only authentication surface reachable anonymously on
  oncoc4.com is the Umbraco CMS Delivery API *member* authorization server, whose
  OpenID Connect discovery document is served at /.well-known/openid-configuration.
  This profile is derived verbatim from that document. It describes website member
  login, not an API product.
caveat: >-
  Not a developer API auth profile. Umbraco ships this authorization server by
  default with the Delivery API; its presence says nothing about an API program.
  The endpoints it advertises live under /umbraco/, which oncoc4.com/robots.txt
  disallows, so they were not crawled.
schemes:
- id: umbraco_delivery_member_oidc
  type: openIdConnect
  standard: OpenID Connect 1.0 / OAuth 2.0
  openIdConnectUrl: https://oncoc4.com/.well-known/openid-configuration
  issuer: https://oncoc4.com/
  endpoints:
    authorization: https://oncoc4.com/umbraco/delivery/api/v1/security/member/authorize
    token: https://oncoc4.com/umbraco/delivery/api/v1/security/member/token
    userinfo: https://oncoc4.com/umbraco/delivery/api/v1/security/member/userinfo
    end_session: https://oncoc4.com/umbraco/delivery/api/v1/security/member/signout
    revocation: https://oncoc4.com/umbraco/delivery/api/v1/security/member/revoke
    jwks: https://oncoc4.com/.well-known/jwks
  grant_types:
  - authorization_code
  - refresh_token
  response_types:
  - code
  response_modes:
  - form_post
  - fragment
  - query
  pkce:
    supported: true
    code_challenge_methods:
    - plain
    - S256
  token_endpoint_auth_methods:
  - client_secret_basic
  - client_secret_post
  id_token_signing_alg_values:
  - RS256
  subject_types:
  - public
  claims:
  - aud
  - exp
  - iat
  - iss
  - sub
  scopes:
  - openid
  - offline_access
  features:
    claims_parameter_supported: false
    request_parameter_supported: false
    request_uri_parameter_supported: false
    authorization_response_iss_parameter_supported: true
notes:
- No API key, HTTP bearer, basic, or mutualTLS scheme is documented anywhere on
  the public OncoC4 surface.
- PKCE advertises `plain` alongside `S256`; `plain` is a downgrade path and is
  discouraged by RFC 7636 for public clients.
x-evidence:
  fetched: '2026-08-04'
  url: https://oncoc4.com/.well-known/openid-configuration
  http_status: 200
  content_type: application/json;charset=UTF-8
  file: well-known/oncoc4-openid-configuration.json