IdentityServer實現以下規范：
OpenID Connect
- OpenID Connect Core 1.0 (spec)
- OpenID Connect Discovery 1.0 (spec)
- OpenID Connect Session Management 1.0 - draft 22 (spec)
- OpenID Connect HTTP-based Logout 1.0 - draft 03 (spec)
OAuth 2.0
- OAuth 2.0 (RC-6749)
- OAuth 2.0 Bearer Token Usage (RFC 6750)
- OAuth 2.0 Multiple Response Types (spec)
- OAuth 2.0 Form Post Response Mode (spec)
- OAuth 2.0 Token Revocation (RFC 7009)
- OAuth 2.0 Token Introspection (RFC 7662)
- Proof Key for Code Exchange (RFC 7636)
- JSON Web Tokens for Client Authentication (RFC 7523)