Gatsby has implemented a Site Showcase to display a variety of websites built with its platform, necessitating ongoing maintenance as the number of sites increases. To manage this, a validator was developed using Node.js to automate the process of verifying whether sites in the showcase still use Gatsby, by checking for specific HTML identifiers. This validator uses GitHub Actions for deployment, allowing it to run daily without additional infrastructure. Since its integration into Gatsby Core, the validator has enhanced the reliability of the showcase by enabling maintainers to identify and address sites that no longer use Gatsby. Future improvements may involve extending the validator with additional tools to ensure continued accuracy and effectiveness in monitoring the showcase.