OpenID Connect Dynamic Client Registration 1.0 Deep Dive: Dynamic Client Registration for Automation and Scale

Introduction When developing an application using OAuth 2.0 or OpenID Connect (OIDC), what is the very first step you take? Usually, you log into the management console of an Identity Provider (IdP/OP) like Google, Auth0, or Okta, click the "Create New Application" button, manually register the callback URL ( redirect_uri ), and obtain a Client ID and Client Secret. However, in modern architectures where systems scale massively or involve numerous microservices and native apps, this "manual pre-registration" can become a significant bottleneck and source of friction in development and operations. Secure authentication per mobile app instance (Assigning unique credentials for each installation) Automated onboarding per tenant in SaaS environments (Automatically generating an OAuth client in the background the moment a customer signs a contract) Dynamic provisioning of microservices and AI agents (Allowing systems to autonomously retrieve credentials without human intervention) The stand