No cookies, no analytics
There is no cookie, no tracking pixel, no session identifier, and no third-party script on any page. Fonts are self-hosted from this origin at build time rather than loaded from a font service. The site song is served from this origin as an audio file and plays in the footer without contacting anyone. The player also links to the track on Spotify; following that link takes you to Spotify under Spotify's own policy.
Server-side data flows
Two things happen on the server. Vercel, which hosts the site, keeps request logs that include the URL you requested and its query string, along with the standard fields a web server records. This site adds nothing to those logs and reads them only to keep the site running. The server also calls the GitHub API to read the library registry, READMEs, and star counts; those calls carry nothing about you.
What the API and Markdown twins publish
The JSON API and the Markdown twin of each page republish attribution that is already public in the library registry: the GitHub handle and display name of the person who printed each CLI. Nothing on this site is derived from visitor behavior, because none is recorded.
The GitHub webhook
A GitHub webhook tells this site when the library repository changes. It receives the push payload GitHub sends, checks the signature, refreshes the cached catalog, and discards the payload. It stores nothing.