Skip to content
@cedar-policy

cedar-policy

README.md

README.md

Cedar Green Logo

Welcome!

Cedar is an open source policy language and evaluation engine. Cedar enables developers to express fine-grained permissions as easy-to-understand policies enforced in their applications, and decouple access control from application logic. Cedar supports common authorization models such as role-based access control and attribute-based access control. It is the first policy language built from the ground up to be verified formally by using automated reasoning, and tested rigorously using differential random testing.

Project Resources

Repositories

  • cedar
    Cedar SDK including the authorization engine, validator, policy formatter, and CLI
  • cedar-docs
    Houses documentation for all cedar projects
  • cedar-examples
    Example applications using the Cedar language and SDK
  • cedar-spec
    Formal Lean specification for the Cedar language as well as the differential testing/property-based testing framework
  • cedar-local-agent
    Configurable cache for Cedar policies and entities
  • cedar-go
    Cedar Go implementation
  • cedar-java
    Java language bindings for Cedar
  • cedar-awesome
    Curated list of awesome Cedar related tools and articles.
  • rfcs
    Request For Comments (RFC) for Cedar
  • vscode-cedar
    Cedar policy language extension for Visual Studio Code
  • cedar-integration-tests
    Cedar integration tests
  • highlightjs-cedar
    highlight.js support for Cedar policy language
  • prism-cedar
    Prism support for Cedar policy language

Code of Conduct

This project has adopted the Amazon Open Source Code of Conduct. For more information see the Code of Conduct FAQ, or contact [email protected] with any additional questions or comments.

Security

If you discover a potential security issue in this project we ask that you notify AWS/Amazon Security via our vulnerability reporting page or directly via email to [email protected]. Please do not create a public GitHub issue.

License

This project is licensed under the Apache v2.0 License.

Copyright

See NOTICE for details.

Trademark

Cedar is a trademark of Amazon Web Services. If publishing software using Cedar, you are not required to attribute. However, if you’d like to, we encourage you to use the language below.

Do: Don't:
✅ Powered by Cedar ❌ Cedar 2.0
✅ Created with Cedar ❌ Created by Cedar
✅ Using Cedar ❌ Software created by Cedar

Popular repositories Loading

  1. cedar cedar Public

    Implementation of the Cedar Policy Language

    Rust 1.1k 101

  2. cedar-go cedar-go Public

    Golang implementation of the Cedar Policy Language

    Go 136 14

  3. cedar-access-control-for-k8s cedar-access-control-for-k8s Public

    Cedar for Kubernetes brings the power of Cedar to Kubernetes authorization and admission validation, showing how cluster administrators can enable a unified access control language for principals m…

    Go 129 8

  4. cedar-spec cedar-spec Public

    Definitional implementation of Cedar language and utilities for DRT

    Lean 122 27

  5. cedar-examples cedar-examples Public

    Some examples of using the Cedar language to specify authorization

    Rust 94 32

  6. cedar-awesome cedar-awesome Public

    A curated list of awesome Cedar related tools and articles.

    64 10

Repositories

Showing 10 of 17 repositories
  • cedar-spec Public

    Definitional implementation of Cedar language and utilities for DRT

    cedar-policy/cedar-spec’s past year of commit activity
    Lean 122 Apache-2.0 27 34 6 Updated Jul 29, 2025
  • cedar Public

    Implementation of the Cedar Policy Language

    cedar-policy/cedar’s past year of commit activity
    Rust 1,100 Apache-2.0 101 128 10 Updated Jul 29, 2025
  • authorization-for-expressjs Public
    cedar-policy/authorization-for-expressjs’s past year of commit activity
    TypeScript 10 Apache-2.0 0 0 7 Updated Jul 29, 2025
  • cedar-docs Public

    Documentation for Cedar policy language

    cedar-policy/cedar-docs’s past year of commit activity
    31 Apache-2.0 31 14 2 Updated Jul 24, 2025
  • cedar-authorization Public
    cedar-policy/cedar-authorization’s past year of commit activity
    TypeScript 2 Apache-2.0 0 1 5 Updated Jul 22, 2025
  • cedar-java Public

    Java bindings for the Cedar language

    cedar-policy/cedar-java’s past year of commit activity
    Java 61 Apache-2.0 27 5 12 Updated Jul 21, 2025
  • cedar-access-control-for-k8s Public

    Cedar for Kubernetes brings the power of Cedar to Kubernetes authorization and admission validation, showing how cluster administrators can enable a unified access control language for principals making API calls and giving policy authors a single language to write and reason about

    cedar-policy/cedar-access-control-for-k8s’s past year of commit activity
    Go 129 Apache-2.0 8 28 2 Updated Jul 18, 2025
  • vscode-cedar Public

    Cedar policy language extension for Visual Studio Code

    cedar-policy/vscode-cedar’s past year of commit activity
    TypeScript 23 Apache-2.0 4 4 0 Updated Jul 18, 2025
  • rfcs Public

    RFCs for Cedar

    cedar-policy/rfcs’s past year of commit activity
    16 Apache-2.0 12 1 10 Updated Jul 15, 2025
  • cedar-examples Public

    Some examples of using the Cedar language to specify authorization

    cedar-policy/cedar-examples’s past year of commit activity
    Rust 94 Apache-2.0 32 6 11 Updated Jul 15, 2025
View all repositories

Most used topics

Loading…