291 agents moved a Firebase app to Postgres, Better Auth and SvelteKit in about two days.

The September 26 writeup says the agents first wrote a plan of 84 work items each sized for one agent, then moved 705,614 Firestore documents, 237 API routes and 52 admin pages, with a 33-minute cutover. The honest parts are better than the headline: review became the bottleneck ("agents write commits faster than anyone reads them"), an account-linking bug got through, and a pager broke on page two in production because dev never had a page two. His argument is that well-documented boring tech gives agents better priors than vendor SDKs. No token or cost figures published.