generated: '2026-08-13'
method: probed
source: https://auth.grin.co/.well-known/openid-configuration
note: >-
  Scopes are read from the two anonymous discovery documents GRIN's own hosts
  serve, not from an OpenAPI (none is publicly reachable) and not from a docs
  scopes reference (GRIN publishes none). Two distinct scope sets exist and are
  kept separate here: the identity scopes the auth.grin.co tenant advertises,
  and the much smaller set the Gia MCP server actually requires as a protected
  resource. GRIN publishes NO product/permission scopes — nothing of the form
  read:creators or write:programs is advertised anywhere public — so the MCP
  server's authorization is account-wide identity rather than scoped capability.
  That is a real finding about the agent surface, not a gap in this probe.

schemes:
- name: GrinOIDC
  source: well-known/grin-openid-configuration.json
  issuer: https://auth.grin.co/
  flows:
  - flow: authorizationCode
    authorizationUrl: https://auth.grin.co/authorize
    tokenUrl: https://auth.grin.co/oauth/token
  - flow: clientCredentials
    tokenUrl: https://auth.grin.co/oauth/token
  - flow: deviceCode
    deviceAuthorizationUrl: https://auth.grin.co/oauth/device/code
    tokenUrl: https://auth.grin.co/oauth/token

scopes:
- scope: openid
  description: OIDC authentication; issues an ID token identifying the GRIN user.
  flows: [authorizationCode, clientCredentials, deviceCode]
  required_by: [https://mcp.grin.co/mcp]
  sources: [well-known/grin-openid-configuration.json, well-known/grin-oauth-protected-resource.json]
- scope: profile
  description: Basic profile claims for the authenticated GRIN user.
  flows: [authorizationCode, deviceCode]
  required_by: [https://mcp.grin.co/mcp]
  sources: [well-known/grin-openid-configuration.json, well-known/grin-oauth-protected-resource.json]
- scope: email
  description: Email address of the authenticated GRIN user.
  flows: [authorizationCode, deviceCode]
  required_by: [https://mcp.grin.co/mcp]
  sources: [well-known/grin-openid-configuration.json, well-known/grin-oauth-protected-resource.json]
- scope: email_verified
  description: Whether the user's email address has been verified.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: offline_access
  description: Issues a refresh token for long-lived access.
  flows: [authorizationCode, deviceCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: name
  description: Full name claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: given_name
  description: Given-name claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: family_name
  description: Family-name claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: nickname
  description: Nickname claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: picture
  description: Profile picture claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: created_at
  description: Account creation timestamp claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: identities
  description: Linked identity-provider records for the user.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: phone
  description: Phone-number claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]
- scope: address
  description: Address claim.
  flows: [authorizationCode]
  sources: [well-known/grin-openid-configuration.json]

mcp_resource:
  resource: https://mcp.grin.co/mcp
  authorization_servers: [https://auth.grin.co/]
  scopes_supported: [openid, email, profile]
  source: well-known/grin-oauth-protected-resource.json

gaps:
- id: no-product-scopes
  detail: >-
    No capability-level scopes are published. An agent authorizing against the
    Gia MCP server presents only identity scopes, so a consumer cannot request
    or reason about least privilege from the public surface.

x-evidence:
- url: https://auth.grin.co/.well-known/openid-configuration
  http_status: 200
  fetched: '2026-08-13'
- url: https://mcp.grin.co/.well-known/oauth-protected-resource
  http_status: 200
  fetched: '2026-08-13'