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Get Started Free →Review docs/prose for Writing Guidelines compliance. Use when asked to "review my docs", "check writing style", "audit prose", "review docs voice and tone", or "check this page against the writing handbook".
.claude/skills/nexu-io-writing-guidelines/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-10 | ✗→✓ | ▲ Improved | -58% | 0% |
| case-19 | ✗→✓ | ▲ Improved | -36% | 0% |
| case-21 | ✗→✓ | ▲ Improved | -9% | 0% |
| case-04 | ✓→✓ | = Same ✓ | 367% | 0% |
| case-08 | ✓→✓ | = Same ✓ | 48% | 0% |
Review files for compliance with Writing Guidelines.
references/guidelines.md — this is the default, reproducible execution pathfile:line formatDefault (pinned): The vendored copy at references/guidelines.md is the default execution path. It is a pinned snapshot of the upstream guidelines and guarantees the skill produces reproducible results in any runtime environment.
Upstream (live): For users who want the very latest rules, the live source is available at:
https://raw.githubusercontent.com/vercel-labs/writing-guidelines/main/command.mdFetching the live version is optional — the pinned snapshot is always the baseline.
When a user provides a file or pattern argument:
references/guidelines.md as the default sourceIf no files specified, ask the user which files to review.
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-01 | fail→fail | 8,277 | 6,918 | -16% | 1 | 1 | 0% | 1,457 | 641 | -56% | 0 | 0 | — |
case-02 | fail→fail | 3,038 | 7,778 | +156% | 1 | 1 | 0% | 321 | 840 | +162% | 0 | 0 | — |
case-03 | fail→fail | 2,344 | 3,913 | +67% | 1 | 1 | 0% | 339 | 546 | +61% | 0 | 0 | — |
case-04 | pass→pass | 3,247 | 17,522 | +440% | 1 | 1 | 0% | 481 | 2,244 | +367% | 0 | 0 | — |
case-10 | fail→pass | 11,892 | 2,806 | -76% | 1 | 1 | 0% | 1,710 | 710 | -58% | 0 | 0 | — |
case-05 | fail→fail | 23,107 | 33,910 | +47% | 1 | 1 | 0% | 3,090 | 631 | -80% | 0 | 0 | — |
case-06 | fail→fail | 3,721 | 10,934 | +194% | 1 | 1 | 0% | 555 | 1,817 | +227% | 0 | 0 | — |
case-07 | fail→fail | 5,764 | 6,186 | +7% | 1 | 1 | 0% | 330 | 674 | +104% | 0 | 0 | — |
case-08 | pass→pass | 5,465 | 5,324 | -3% | 1 | 1 | 0% | 779 | 1,155 | +48% | 0 | 0 | — |
case-09 | fail→fail | 11,136 | 4,191 | -62% | 1 | 1 | 0% | 669 | 549 | -18% | 0 | 0 | — |
case-11 | fail→fail | 5,608 | 18,075 | +222% | 1 | 1 | 0% | 869 | 979 | +13% | 0 | 0 | — |
case-12 | fail→fail | 7,667 | 7,616 | -1% | 1 | 1 | 0% | 224 | 777 | +247% | 0 | 0 | — |
case-13 | fail→fail | 13,011 | 5,032 | -61% | 1 | 1 | 0% | 1,760 | 538 | -69% | 0 | 0 | — |
case-14 | pass→pass | 11,367 | 4,826 | -58% | 1 | 1 | 0% | 1,519 | 1,069 | -30% | 0 | 0 | — |
case-15 | fail→fail | 17,180 | 6,637 | -61% | 1 | 1 | 0% | 1,635 | 519 | -68% | 0 | 0 | — |
case-16 | fail→fail | 6,040 | 14,546 | +141% | 1 | 1 | 0% | 872 | 587 | -33% | 0 | 0 | — |
case-17 | fail→fail | 7,760 | 5,850 | -25% | 1 | 1 | 0% | 1,193 | 555 | -53% | 0 | 0 | — |
case-18 | fail→fail | 15,951 | 5,485 | -66% | 1 | 1 | 0% | 2,695 | 497 | -82% | 0 | 0 | — |
case-19 | fail→pass | 5,351 | 2,324 | -57% | 1 | 1 | 0% | 882 | 562 | -36% | 0 | 0 | — |
case-20 | fail→fail | 3,582 | 6,809 | +90% | 1 | 1 | 0% | 467 | 783 | +68% | 0 | 0 | — |
case-21 | fail→pass | 12,647 | 9,820 | -22% | 1 | 1 | 0% | 1,903 | 1,725 | -9% | 0 | 0 | — |
case-22 | fail→fail | 2,726 | 4,572 | +68% | 1 | 1 | 0% | 405 | 488 | +20% | 0 | 0 | — |
case-23 | fail→fail | 5,590 | 4,909 | -12% | 1 | 1 | 0% | 173 | 533 | +208% | 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, and 7 counted toward the lift figure. The other 16 produced results that are not comparable between the two arms, so they are excluded from the headline rather than averaged into it. The headline lift of +13 percentage points is the difference between those two pass rates over the 7 comparable cases.
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.