# Reference for code quality

Find reference documentation for Code Quality.

## Links

* [Metrics and ratings reference](/en/code-security/reference/code-quality/metrics-and-ratings)

  Understand the terminology used by GitHub to assess the quality of your repository's code.

* [CodeQL-powered analysis for Code Quality](/en/code-security/reference/code-quality/codeql-detection)

  Information on how CodeQL-powered analysis for Code Quality works, the workflow used, and the status checks reported on pull requests.

* [Reference for CodeQL queries](/en/code-security/reference/code-quality/codeql-queries)

  Find lists of CodeQL queries used by Code Quality for each supported programming language.