Source – documentation.codeship.com What Is Percy? Percy is a visual testing tool that lets you take screen shots, monitor visual changes and require team approval to these visual captures in an automated way as part of your CI/CD pipeline. Setting Up Percy Setting Your Percy Variables You will need to add the two values Percy provides when you create a new project inside their application – PERCY_TOKEN and PERCY_PROJECT – to the encrypted environment variables that you define in your codeship-services.yml