// field notes
Case studies,
written honestly.
Real engineering decisions from real builds - including our own. Every claim here maps to a commit, an issue, or a run we can show you.
Shipping SEO at build time: the prestruct migration
How we replaced a homebrew prerender with our open-source prestruct engine, swept the dead code, and put the whole SEO head contract under CI.
Crashtest first blood: 30 attacks, 29 refused, 1 exploited
Running our adversarial QA tool against fresh code: one campaign broke both handlers in under a minute, and the fix changed how we write handlers everywhere.
Vant builds Vant: an agent OS that remembers its own work
How our agent operating system keeps its memory in git, serves it over MCP, and has been used to build itself through 2,649 commits and 71 merged pull requests.
Eyes on our own build: catching what tests cannot see
How we pointed our visual regression tool at creadev.org, made every page byte-identical, and caught a bug the tests and the audit missed.
Gistory: building a relay that cannot read your data
End-to-end encrypted multi-device sync for a prompt keeper: a blind relay over Cloudflare D1, and 62 adversarial findings with none exploited.