Conciseness

The ~34-line body earns its tokens with non-obvious operational facts Claude cannot know — "spends the user's credits (10–210 credits/page depending on mode)", "Download URLs expire in 1 hour", "Rate limits apply (Fast PPT 10/min, Nano Banana 6/min)" — and no space is spent explaining concepts Claude already knows. Lean and efficient matches anchor 5; anchor 4 would require trimmable over-explanation, which is absent.

Actionability

The body contains no executable commands (those live one hop away in the referenced guide), but its directives are concrete and specific: the env var name "SLIDES_2SLIDES_API_KEY", "poll async jobs every 20–30s rather than tight-looping", "set an agreed explicit budget/count before billable generation", "Validate ZIP entries and extraction size before unpacking". This is mostly executable guidance with the runnable layer delegated rather than missing — anchor 4, not 5 since copy-paste-ready commands are absent from the body itself.

Workflow Clarity

The body explicitly delegates sequencing ("Read [the detailed guide](references/detailed-guide.md) before executing this skill") to the guide's Workflow Decision Tree, and validation checkpoints for the billable/batch operations are present — "A request timeout may still leave a paid server job running. Check job/account state before retrying" and ZIP-entry validation before unpacking — so the ≤3 cap for batch skills lacking validation does not apply. Anchor 4 (clear sequence via delegation, most checkpoints present); not 5 because no explicit generate → poll → validate → retry feedback loop is spelled out in the body itself.

Progressive Disclosure

Scored against the actual bundle: the body is a lean overview pointing to a real, clearly signaled file ("It retains the complete procedure and reference material"), and that guide indexes api-reference.md, mcp-integration.md, and pricing.md by topic with scripts referenced per workflow — good structure matching anchor 4. Not anchor 5, because reaching api-reference/mcp-integration/pricing is two hops from the root (SKILL.md → detailed-guide.md → those files) and the body never mentions them or the seven scripts directly, deviating from the one-level-deep ideal.

Specificity

Quotes five concrete actions — "create slides from text", "match a reference image style", "summarize documents into decks", "add AI voice narration", "and export pages/audio" — covering generation, styling, summarization, narration, and export comprehensively. This matches the level-5 anchor (multiple specific concrete actions, comprehensive coverage); level 4 would require minor coverage gaps, which are not present.

Completeness

Both halves are explicit: the 'what' lists concrete capabilities ("create slides from text, match a reference image style, summarize documents into decks, add AI voice narration"), and the 'when' is "Use for any 'make slides', 'create a deck', or 'slides from this document' request". This mirrors the level-5 good example almost exactly; level 4 would require the 'when' to be less explicit, which it is not.

Trigger Term Quality

Natural trigger phrases users would actually say are quoted directly: "make slides", "create a deck", "slides from this document". Common variants like "PowerPoint", ".ppt", or "create a presentation" are absent, so coverage is good but not comprehensive — matching anchor 4 rather than anchor 5's synonym/extension completeness, and clearly above anchor 3's 'missing common variations'.

Distinctiveness Conflict Risk

The niche is distinct (presentation generation via the named "2slides API" with 2slides-specific triggers like "slides from this document"), but "make slides"/"create a deck" would also naturally trigger a generic .pptx authoring or PowerPoint-editing skill, creating minor overlap. Mostly distinct with minor overlap risk matches anchor 4; anchor 5 would require triggers with minimal conflict against related skills.