Implementing a generic SCIM client: A practical guide
Blog post from WorkOS
User provisioning is a fundamental component of enterprise-ready applications, and the System for Cross-domain Identity Management (SCIM) protocol facilitates this by standardizing the exchange of user and group data between Identity Providers (IdPs) and applications. While most enterprise IdPs like Okta and Azure AD come with built-in SCIM clients, custom IdPs require the development of a SCIM client to integrate with service providers like WorkOS. This process involves understanding authentication, supported endpoints, and crafting requests for user and group management operations such as creation, update, deactivation, and deletion. SCIM operates over HTTP using predictable REST endpoints and JSON schemas, as outlined in RFC 7644 and RFC 7643, and requires careful handling of authentication, idempotency, and error responses to ensure reliable synchronization. The guide emphasizes the importance of maintaining consistency, managing payload sizes, and handling deactivated users to prevent security vulnerabilities. A checklist for going live is recommended to ensure compliance, resilience, and interoperability with enterprise IdPs, thereby streamlining user management and enhancing enterprise adoption of applications.