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Get Started Free →Exercise the real app/API/CLI and collect observable evidence; tests alone do not count as end-to-end verification.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-05 | ✗→✓ | ▲ Improved | -30% | 0% |
| case-08 | ✗→✓ | ▲ Improved | -58% | 0% |
| case-09 | ✗→✓ | ▲ Improved | -40% | 0% |
| case-15 | ✗→✓ | ▲ Improved | -37% | 0% |
| case-16 | ✓→✗ | ▼ Worse | -44% | 0% |
Use when the user wants proof the real surface works, not only unit tests.
Other measured skills in the registry, with their headline benchmark lift.