VulnKnox is a command-line tool written in Go that interfaces with the KNOXSS API to automate testing URLs for Cross-Site Scripting (XSS) vulnerabilities. It supports pipe input, configurable retries and timeouts, and advanced features like Advanced Filter Bypass and Flash Mode. The tool can be configured to use custom headers, proxy support, and Discord webhook integration for notifications. To use VulnKnox, users need to set up their configuration by obtaining a KNOXSS API key and editing the config.json file. The tool can be used to test single URLs or input files containing multiple URLs, with options for customizing the HTTP method, POST data, and output. VulnKnox provides detailed output with color-coded results, including indicators for successful XSS payloads, safe responses, errors, and skipped domains. The tool also provides a summary at the end of execution, including the number of requests made and successful XSS findings. Contributions to the project are welcome, and it is licensed under the MIT License. VulnKnox is a powerful tool for automating XSS vulnerability testing, and its advanced features make it a valuable asset for security professionals. Overall, VulnKnox is a versatile and customizable tool for identifying XSS vulnerabilities in web applications.