Describe the part you need in the chat.
When it's clear, press "Build first version".
Then use the tools on the left to mark changes right on the part.
Tool Orbit—Perspective

New project

Spending caps

A cap is the most a single chat message or build can cost. With caps on, the AI works within that budget, and you're never charged more, even if the work cost us more. Higher caps give the AI more room on hard parts.

Failed builds are always free. How credits work