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Passed 12 of 22 test cases with the skill, and 3 of 22 without it.
and 8 more in the full report
9 fixed3 passed either way10 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.8-flash on 10/21/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
We are planning to add a dark mode toggle to our web application, but stakeholder requests are vague and there is a high risk of feature expansion. Please produce a specification brief that lays out the problem summary, boundary limits with explicit non-goals, an acceptance criteria table with required evidence and ownership, technical constraints, and handoff details.
| Checked | Without skill | With skill |
|---|---|---|
| uses the exact section heading ## Problem Statement | Missed | Passed |
| requires evidence verification for each acceptance criterion rather than plain checkboxes | Passed | Passed |
| lists explicit non-goals alongside in-scope items | Passed | Passed |
The instructions your model reads when the skill loads.
Read the workflow when this skill applies. For code work, follow the guard contract first. Design and implementation require separate user turns. Only the owning main conversation writes code. Missing evidence is unknown; honest failure is a valid outcome.
test cases passed, vs 3 / 22 without
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