A validation tool for GitHub CODEOWNERS files that checks syntax, file existence, owner validity, and duplication.
Codeowners Validator is a tool that validates GitHub CODEOWNERS files for correctness. It checks syntax, verifies file patterns exist, ensures owners are valid GitHub users or teams, and detects duplicated entries. It solves the problem of broken CODEOWNERS files that fail silently and disrupt code review assignments.
Development teams and DevOps engineers managing GitHub repositories who use CODEOWNERS files to assign review responsibilities. Particularly valuable for organizations with large teams and complex repository structures.
Developers choose Codeowners Validator because it provides comprehensive validation beyond GitHub's basic syntax checking, catches errors before they affect workflows, and integrates seamlessly into CI/CD pipelines via Docker, CLI, or GitHub Actions.
The GitHub CODEOWNERS file validator
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Performs multiple checks including syntax validation, file existence, owner validity, and duplicated patterns, as detailed in the checks section of the README, going beyond GitHub's basic validation.
Can be run via Docker, CLI, or GitHub Action, making it easy to integrate into various workflows, as shown in the usage examples with clear instructions for each method.
Allows enabling/disabling specific checks and experimental features like 'notowned' and 'avoid-shadowing' using environment variables, providing customization for different repository needs.
Supports GitHub tokens and GitHub Apps for authentication, and can validate owners against specific organizations, enhancing accuracy for GitHub repositories, as noted in the configuration options.
Requires setting multiple environment variables for full functionality, such as GITHUB_ACCESS_TOKEN and OWNER_CHECKER_REPOSITORY, which can be cumbersome and error-prone for new users.
Only works with GitHub repositories and CODEOWNERS files, not applicable to other Git hosting services like GitLab or Bitbucket, limiting its utility in mixed environments.
Needs GitHub API access for owner validation, which can lead to rate limiting issues or failures if the token is invalid or expired, adding operational overhead.