Sandbox demo
Builder Agents
Speed and scope — keeping builders fast without letting them drift.
Builders execute a plan. They should be fast, narrow, and obedient to the plan they were handed. The failure mode is scope creep — a builder noticing a tangential issue and trying to fix it, blowing up the diff. A good builder system prompt explicitly forbids out-of-scope edits and routes them back to the planner.
Sandbox transcript
Press Play to replay this transcript step-by-step.
0 / 4
The transcript is canned — no real API calls. The point is to internalize the loop: user → plan → tool → result → answer.
Check your understanding
Q1. Why is scope creep the main builder failure mode?
· Score 100% on the quiz.