CSP Evaluator is a Chrome add-on designed specifically for developers and security experts to assess the effectiveness of Content Security Policies (CSP) in mitigating cross-site scripting (XSS) attacks. This tool simplifies what is typically a manual and complex review process, allowing users to identify potential vulnerabilities in their CSP implementations.

The tool's checks are grounded in extensive empirical research, providing insights that can help developers strengthen their CSP configurations. While CSP Evaluator serves as a valuable resource for enhancing web security, it is important to note that it is provided solely for the convenience of developers, without any guarantees or warranties from Google.