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Get Started Free →okhp3/okhp3-replit-design-pipeline
The complete Replit design iteration loop as a single coherent workflow — extract → sandbox → variant → graduate.
Passed 15 of 19 test cases with the skill, and 4 of 19 without it.
and 10 more in the full report
12 fixed5 passed either way5 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
Before placing the extracted baseline iframe onto the design canvas, what query should be executed?
| Checked | Without skill | With skill |
|---|---|---|
| The output states that canvas state must be read before placing the shape. | Missed | Passed |
The instructions your model reads when the skill loads.
OverKill Hill P³ · overkillhill.com · github.com/OKHP3
Replit's design canvas exposes five interlocking skills: mockup-sandbox, mockup-extract, mockup-graduate, design-exploration, and the design (DESIGN subagent) skill. None of them explains the full loop as a decision tree. This skill does.
| In scope | Out of scope |
|---|---|
| Decision tree: extract vs. build from scratch | Canvas callback schemas — read the canvas skill |
| Full pipeline narration: extract → sandbox → variant → graduate | Sandbox setup and URL patterns — read mockup-sandbox |
| DESIGN subagent brief anatomy | Import tracing during extraction — read mockup-extract |
| Variant labelling on canvas | Production wiring — read mockup-graduate |
| Graduation decision gate | Launching subagents — read the design skill |
User asks to improve / redesign / create variants / show options
↓
Does the component already exist in the main app codebase?
│
YES ───┤ NO
↓ ↓
EXTRACT first BUILD from scratch
(mockup-extract) (mockup-sandbox + DESIGN subagent)
then iterate ↓
│ Is this a net-new component
↓ the user described, or one
Proceed to the agent is inventing?
VARIANT phase │
Both → Build from scratch,
then proceed to VARIANT phase
test cases passed, vs 4 / 19 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.