Conciseness

The ~35-line body is lean with zero padding: it explains nothing Claude already knows, and every line instructs ('Favor ideas the user can actually execute over generic channel lists', the compact context-field and channel lists). It matches the 'lean and efficient; every token earns its place' anchor rather than the score-4 anchor, which requires minor instances of over-explanation to trim.

Actionability

Concrete, specific guidance throughout: exact context fields to gather ('Category, target customer, primary pain, offer, price point, traction, constraints, budget, timeline, and team size'), a fixed per-idea structure ('Audience insight... Execution steps... Expected upside... Effort and risk'), a named prioritization lens ('impact, confidence, and effort'), and a defined output ('top 5 recommendations'). For an instruction-only skill no code is required, but minor gaps remain — no numeric scale for the prioritization lens and no example output format — so it sits at 4 rather than fully copy-paste-ready 5.

Workflow Clarity

The six steps are clearly sequenced (gather context -> choose channels -> generate and cluster -> detail each idea -> prioritize -> convert to action plan) with conditional handling ('unless the user requests another method', 'when the user has a deadline or launch window'). It is above the score-3 anchor (sequence present but checkpoints implicit) because the conditionals act as decision points, but below 5 because there are no explicit validation or self-check steps on the generated ideas.

Progressive Disclosure

The skill is under 50 lines, self-contained with no external references needed, and organized into clean Overview / Workflow / Output Pattern / Example Prompts sections with no content that belongs in a separate file. Per the rubric's simple-skill guideline, this warrants a 5 on well-organized sections alone.

Specificity

The description names the domain and a concrete action ('Generate tailored SaaS and product marketing ideas') and enumerates seven specific channels ('organic, paid, community, partnerships, product-led growth, retention, and launch channels'), giving broad coverage. It falls short of a 5 because the capability is a single action verb — there are not multiple distinct concrete actions like 'extract, fill, merge' — and above a 3 because the channel enumeration is comprehensive rather than 1-2 items.

Completeness

It clearly answers both questions: the 'what' ('Generate tailored SaaS and product marketing ideas across... channels') and an explicit 'when' with concrete trigger phrases ('Use when the user asks for `/marketing-ideas`, marketing brainstorms, launch ideas, channel ideas, growth tactics, or a prioritized marketing plan'). This matches the score-5 anchor exactly; no 'when' clause is missing or weakly implied.

Trigger Term Quality

The 'Use when' clause covers good natural phrasing users would say: 'marketing brainstorms', 'launch ideas', 'channel ideas', 'growth tactics', 'a prioritized marketing plan', plus the explicit '/marketing-ideas' command. It misses a few natural synonyms such as 'promote my product', 'go-to-market ideas', or 'growth ideas', placing it between the 'good coverage, a few missing' (4) and 'comprehensive including synonyms' (5) anchors — closer to 4.

Distinctiveness Conflict Risk

The niche (SaaS/product marketing idea generation) is distinct and most triggers are ideation-specific, but 'growth tactics' and 'a prioritized marketing plan' could plausibly fire for a general growth-strategy or marketing-planning skill. This is 'mostly distinct; minor overlap risk with closely related skills' (4) rather than 'clear niche with minimal conflict risk' (5).