Implementing Content Security Policy (CSP) Generation with Go

Content Security Policy headers are one of those things every web team knows they should have but often skips — the syntax is verbose, the directives are easy to misconfigure, and a wrong policy breaks the app silently in production. Writing a small generator in Go removes the human error and makes CSP a first-class part of your build. Why CSP matters and where it fails CSP is an HTTP response header that tells the browser which resources — scripts, styles, images, fonts — are allowe