generated: '2026-07-21'
method: searched
source: openapi/sign-in-enterprise-guest-api-openapi-original.yml
docs: https://trust.signinsolutions.com/
standards:
- id: oauth2
  conforms: true
  evidence: OpenID Connect / OAuth 2.0 authorizationCode flow with scoped access
- id: oidc
  conforms: true
  evidence: OpenID Connect discovery published at /.well-known/openid-configuration
- id: rfc8414-oauth-as-metadata
  conforms: true
  evidence: /.well-known/oauth-authorization-server returns 200 with authorization-server metadata
- id: rest-json
  conforms: true
  evidence: REST over application/json with standard HTTP status codes
- id: idempotency
  conforms: true
  evidence: Idempotency-Key request header supported on write operations (24h retention)
- id: rfc9457-problem-details
  conforms: false
  evidence: errors returned as plain JSON, not application/problem+json
- id: soc2
  conforms: true
  evidence: SOC 2 listed on trust.signinsolutions.com
- id: iso27001
  conforms: true
  evidence: ISO 27001 listed on trust.signinsolutions.com
- id: csa-star
  conforms: true
  evidence: CSA STAR listed on trust.signinsolutions.com
- id: cyber-essentials
  conforms: true
  evidence: Cyber Essentials listed on trust.signinsolutions.com
- id: gdpr
  conforms: true
  evidence: GDPR compliance documented on trust center and compliance hub
- id: ccpa
  conforms: true
  evidence: CCPA compliance documented on trust center and compliance hub