# OpenGSO > OpenGSO is a free, open-source CLI and middleware that shows what AI agents actually receive from your site, writes a markdown version of every page, and serves it to them at the same URL. No account, no API key, no telemetry. Every link below is a Markdown version of the corresponding page, generated from the page itself. ## Pages - [OpenGSO](https://sherwinvishesh.github.io/OpenGSO/index.md): OpenGSO is a free, open-source CLI and middleware that shows what AI agents actually receive from your site, writes a markdown version of every page, and serves it to them at the same URL. No account, no API key, no telemetry. - [Everything OpenGSO does, and how.](https://sherwinvishesh.github.io/OpenGSO/docs.md): Install OpenGSO, score a URL, copy the fix prompt, generate markdown twins, serve them with the production middleware, and understand all 22 checks, the wire spec, the config file and the AI providers. - [Nothing is collected.](https://sherwinvishesh.github.io/OpenGSO/privacy.md): What OpenGSO and this website collect: nothing. No telemetry, no analytics, no cookies. The only data that leaves your machine is what you send to the site you test and the AI provider you pick.