Playground
Things easier to understand by moving than by reading. Nothing here calls the API or needs a key, so it is all safe to poke at before you have set anything up.
The Northwind storefront
A working shop. Browse the gear, file a complaint about it, and watch your own words get classified live.
Scenario
Northwind brand
The mark, lockup, and palette for the company the labs are built around. Includes the 18px test that killed three other concepts.
Scenario
Priya's operations dashboard
The KPIs a support director reports upward, across a staged rollout. Simulated history, clearly badged, with the real unit economics alongside.
Scenario
The inbound queue
Twenty real tickets, before and after triage. Try to spot the safety report before you flip the toggle.
Scenario
Cost explorer
Move the volume, flip caching off, watch the budget bar go red. Measured token counts, real pricing.
Lab 5
Agentic loop stepper
Three turns, four tool calls. Watch context accumulate and see why logging the last turn under-reports cost by 3x.
Lab 3
Spot the cache bug
Four prompt variants. One caches. All four return 200 with a correct answer, which is the whole problem.
Lab 5