iam-lint is a GitHub action designed for linting AWS IAM policy documents to identify security issues and misconfigurations. The tool operates by analyzing IAM policy files within a specified directory path and evaluating them against security best practices and compliance standards. Users can configure the tool to target specific file types by setting a custom file suffix parameter. The linting process includes severity-based filtering, allowing users to define the minimum severity level of findings they want to display in the results. This helps focus attention on the most critical security issues while filtering out lower-priority findings. iam-lint supports custom configuration files, enabling organizations to tailor the linting rules to their specific security requirements and compliance frameworks. The tool also provides functionality for integrating private auditors, allowing for custom security checks beyond the standard rule set. As a GitHub action, iam-lint integrates directly into CI/CD pipelines, enabling automated security validation of IAM policies during the development and deployment process. This integration helps catch potential security vulnerabilities and policy misconfigurations before they reach production environments.