Cedar

Cedar is a simple yet expressive policy language purpose-built for authorization, supporting common models such as role-based (RBAC) and attribute-based (ABAC) access control. It is fast, scalable, and designed for automated reasoning, enabling analysis tools that optimize policies and formally verify that your security model behaves as intended.

Expressing policies for authorization and role-based access control.

Cedar is a simple yet expressive policy language purpose-built for authorization, supporting common models such as role-based (RBAC) and attribute-based (ABAC) access control. It is fast, scalable, and designed for automated reasoning, enabling analysis tools that optimize policies and formally verify that your security model behaves as intended.

License: Apache v2.0 License

Tags: Policies, Governance

Properties: policies, evaluation, templates, entities, authorization, RBAC, ABAC, namespaces, groups, hiearchies, schema, validation, grammer, examples, levels

Website: https://www.cedarpolicy.com/en


Last modified January 2, 2026: update (871c07bef)