Conciseness

The body is purely imperative with zero padding — no concept explanations ('Do not install or require React, Recharts, Vite...'), every line is an instruction or constraint, and the QA section is a bare checklist. Nothing assumes Claude lacks knowledge it already has.

Actionability

Concrete guidance throughout — a three-tier format priority list, an 8-step numbered build process, a copy-adaptable markdown structure template, and specific QA checks ('Recalculate headline values', 'check... denominators, date ranges, and sorting'). Falls short of 5 because some steps remain directive rather than executable, e.g. 'Run the appropriate analysis workflow first' and 'Build a coherent narrative' give no concrete mechanism.

Workflow Clarity

Clear sequence (choose format → confirm scope → verify evidence → build → QA/handoff) with explicit validation checkpoints and a feedback loop: 'render or inspect the actual artifact when the host supports it; fix clipping, blank charts, overflow, low contrast, and unreadable tables.' The QA checklist covers complex-process checking, and this is not a destructive/batch skill so no cap applies.

Progressive Disclosure

A ~60-line body with clean section headers and no inlined content that belongs in separate files. The single external pointer ('Read ../visualize-data/SKILL.md when creating charts') is clearly signaled, in context, and exactly one level deep. No bundle files exist to verify beyond this pointer.

Specificity

'Build a durable analytical report with an answer-first narrative, evidence-backed findings, charts or tables, caveats, recommendations, and source context' lists several specific deliverable components. Not 5 because it names a single action (build) with modifiers rather than multiple distinct concrete actions; not 3 because coverage of components goes well beyond 1–2.

Completeness

The 'what' is clear and concrete, but there is no 'Use when...' clause or any equivalent explicit trigger guidance — 'when the user needs a durable report' never appears. Per the judging guideline, a missing 'Use when' clause caps completeness at 3.

Trigger Term Quality

Natural terms users would say are present: 'analytical report', 'findings', 'charts or tables', 'recommendations', 'caveats', 'source'. A few common variations are missing — e.g. 'write-up', 'summary', 'brief', 'report out' — so it stops short of comprehensive synonym coverage.

Distinctiveness Conflict Risk

'Durable analytical report' with answer-first/evidence/caveats terminology carves out a mostly distinct niche with clear triggers. Minor overlap risk remains with closely related skills (chart/visualization skills, document-generation skills) for generic 'make me a report' requests; not 5 since without a 'when' clause its triggering surface is broad.