Describe your business in a sentence. Five Claude agents plan it, design it,
fill it with believable data, build a working app and inspect it, in about a minute, while
you watch the yard.
PlannerHaiku 4.5waiting
DesignerHaiku 4.5waiting
DataHaiku 4.5waiting
BuilderSonnet 4.6waiting
ReviewerHaiku 4.5waiting
your-app.prototype
The app appears here as the builder writes it.
Time—
Tokens—
Cost—
The planner turns your sentence into screens, records and the one action that saves you the most time.
The designer picks colours and density for where the app will be used.
The data agent writes a believable Tuesday's worth of records, including a few that need attention.
The reviewer checks the file and says what a real build would add.
How the yard works
infra/live/agent/build.mjs
One AWS Lambda function with response streaming runs the crew on Amazon Bedrock. The
planner (Claude Haiku) turns your sentence into a plan. The designer and the data agent
take that plan and work at the same time, which is why their crates leave the planner
together. The builder (Claude Sonnet) waits for both, then writes the app, and every
character streams to this page as it is written: the building in the yard rises with it.
The reviewer runs automatic checks and reads the result.
What comes back is untrusted code, so it is treated that way. It runs in a sandboxed
frame with no access to this site, its cookies or storage, and it carries a security policy
that blocks every network request. A sketch is not a product: the reviewer's last word is
always what a real build would add, and that part is my job.