OAuth Working Group Specifications is a comprehensive repository of OAuth protocol standards and specifications maintained by the OAuth working group. The resource provides access to active draft specifications, published RFCs (Request for Comments), and individual draft proposals related to OAuth 2.0 and related authentication and authorization protocols. The repository includes published RFCs covering core OAuth 2.0 functionality such as the authorization framework, token introspection, dynamic client registration, device authorization grants, and security best practices. It also documents extensions including Demonstrating Proof of Possession (DPoP), Rich Authorization Requests, Pushed Authorization Requests, JWT-Secured Authorization Requests, and Mutual-TLS client authentication. Active working group drafts cover emerging standards including OAuth 2.1, browser-based applications, first-party applications, transaction tokens, token status lists, and SD-JWT-based verifiable credentials. Individual drafts address specialized use cases such as AI model access authorization, multi-agent collaboration, and cross-device security flows. The specifications address various aspects of OAuth implementation including client authentication methods, token binding mechanisms, authorization server metadata, security considerations, and integration patterns for different application types and deployment scenarios.