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Get Started Free →Autonomous test-driven development agent that writes code to make tests pass
.claude/skills/shadd0wtaka-tdd-agent/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-02 | ✗→✓ | ▲ Improved | 324% | 0% |
| case-05 | ✗→✓ | ▲ Improved | 99% | 0% |
| case-13 | ✗→✓ | ▲ Improved | 28% | 0% |
| case-23 | ✓→✗ | ▼ Worse | 131% | 0% |
| case-06 | ✓→✓ | ＝ Same ✓ | 138% | 0% |
You are an autonomous test-driven development agent. Workflow:
Do not ask for clarification — make reasonable assumptions, document them, and proceed.
If you reach a decision point with two valid approaches, implement both as separate branches and recommend one with justification.
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-06 | pass→pass | 11,148 | 24,854 | +123% | 1 | 1 | 0% | 2,211 | 5,266 | +138% | 0 | 0 | — |
case-01 | fail→fail | 21,673 | 50,713 | +134% | 1 | 1 | 0% | 4,578 | 6,336 | +38% | 0 | 0 | — |
case-02 | fail→pass | 7,429 | 28,783 | +287% | 1 | 1 | 0% | 1,490 | 6,325 | +324% | 0 | 0 | — |
case-03 | fail→fail | 15,092 | 21,868 | +45% | 1 | 1 | 0% | 3,112 | 4,470 | +44% | 0 | 0 | — |
case-04 | fail→fail | 18,482 | 30,687 | +66% | 1 | 1 | 0% | 3,775 | 6,332 | +68% | 0 | 0 | — |
case-05 | fail→pass | 14,578 | 28,105 | +93% | 1 | 1 | 0% | 3,173 | 6,329 | +99% | 0 | 0 | — |
case-07 | pass→pass | 15,324 | 29,288 | +91% | 1 | 1 | 0% | 3,157 | 6,323 | +100% | 0 | 0 | — |
case-08 | fail→fail | 17,982 | 25,285 | +41% | 1 | 1 | 0% | 3,675 | 5,485 | +49% | 0 | 0 | — |
case-09 | pass→pass | 14,521 | 22,594 | +56% | 1 | 1 | 0% | 2,669 | 4,550 | +70% | 0 | 0 | — |
case-10 | fail→fail | 3,896 | 28,947 | +643% | 1 | 1 | 0% | 652 | 6,309 | +868% | 0 | 0 | — |
case-11 | fail→fail | 25,157 | 32,581 | +30% | 1 | 1 | 0% | 5,592 | 6,311 | +13% | 0 | 0 | — |
case-12 | pass→pass | 10,223 | 16,216 | +59% | 1 | 1 | 0% | 1,874 | 3,588 | +91% | 0 | 0 | — |
case-13 | fail→pass | 14,418 | 17,054 | +18% | 1 | 1 | 0% | 2,871 | 3,681 | +28% | 0 | 0 | — |
case-14 | pass→pass | 14,289 | 28,816 | +102% | 1 | 1 | 0% | 3,016 | 6,317 | +109% | 0 | 0 | — |
case-15 | fail→fail | 21,180 | 28,249 | +33% | 1 | 1 | 0% | 4,828 | 6,306 | +31% | 0 | 0 | — |
case-16 | fail→fail | 16,660 | 29,250 | +76% | 1 | 1 | 0% | 3,881 | 6,308 | +63% | 0 | 0 | — |
case-17 | pass→pass | 10,987 | 24,766 | +125% | 1 | 1 | 0% | 2,069 | 4,873 | +136% | 0 | 0 | — |
case-18 | fail→fail | 15,931 | 26,849 | +69% | 1 | 1 | 0% | 3,115 | 5,711 | +83% | 0 | 0 | — |
case-19 | fail→fail | 19,943 | 31,928 | +60% | 1 | 1 | 0% | 3,547 | 6,305 | +78% | 0 | 0 | — |
case-20 | fail→fail | 13,310 | 18,245 | +37% | 1 | 1 | 0% | 2,508 | 3,768 | +50% | 0 | 0 | — |
case-21 | pass→pass | 12,135 | 15,083 | +24% | 1 | 1 | 0% | 1,387 | 1,713 | +24% | 0 | 0 | — |
case-22 | pass→pass | 8,789 | 16,791 | +91% | 1 | 1 | 0% | 1,853 | 3,239 | +75% | 0 | 0 | — |
case-23 | pass→fail | 12,364 | 29,291 | +137% | 1 | 1 | 0% | 2,688 | 6,218 | +131% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 23 cases were attempted. The headline lift of +9 percentage points is the difference between those two pass rates over the 23 comparable cases. 2 cases got worse with the skill loaded, and they are included in that figure.
Without the skill loaded, the model failed this case. With it loaded, the same prompt on the same model passed. This is one improved case from the latest verified run; every case, including any that regressed, is in the table above.
Other measured skills in the registry, with their headline benchmark lift.