Conciseness

The body is largely lean — tables, short bullets, specific numbers ("3-7 items," "Max 3-5 steps per tour," "24h, 72h") — with almost no explanation of concepts Claude already knows. A few generic motivational lines ("Show advancement. Celebrate completions. Make the path visible.") and slight overlap between the email-coordination and stalled-user sections keep it below the 'every token earns its place' anchor.

Actionability

Concrete, specific guidance throughout: decision tables with best-for/risk tradeoffs, exact item counts and timing windows, output templates ("Finding → Impact → Recommendation → Priority"), and a task-specific question list. Minor gaps: no worked example of an audit output or sample empty-state/email copy, so it sits at 'mostly executable with minor gaps' rather than fully turnkey.

Workflow Clarity

The intended sequence (assess context → define activation → audit/design → measure → output) is only implicit in section ordering; it is never framed as ordered steps, and validation checkpoints are absent (e.g., nothing like 'confirm the activation event is instrumented before recommending metrics'). This matches the 'sequence present but checkpoints missing or implicit' anchor. The destructive/batch cap does not apply since the work is advisory.

Progressive Disclosure

The SKILL.md body is a well-organized overview and appropriately delegates the experiment catalog to a single clearly signaled, one-level-deep reference ("For comprehensive experiment ideas: See [references/experiments.md](references/experiments.md)"), which exists as a real, well-structured file. Navigation is easy and no content that belongs in a separate file is inlined.

Specificity

The description names the domain and a single concrete action verb ("optimize post-signup onboarding, user activation, first-run experience, or time-to-value") applied across four objects, but it does not enumerate distinct capabilities the skill performs (audit, flow design, checklist/empty-state patterns, metrics planning). This matches the '1-2 concrete actions, not comprehensive' anchor rather than the 'several specific actions' anchor above it.

Completeness

Both parts are explicitly answered: the 'what' ("optimize post-signup onboarding, user activation, first-run experience, or time-to-value") and an extensive, explicit 'when' ("Also use when the user mentions..." followed by concrete trigger phrases, plus "Use this whenever users are signing up but not sticking around"). The score-4 anchor's weakness ('when' could be more explicit) does not apply here.

Trigger Term Quality

The trigger list is comprehensive and natural: "onboarding flow," "activation rate," "user activation," "first-run experience," "empty states," "aha moment," "low activation rate," "users sign up but don't use the product," "time to value," "first session experience," plus the problem-statement fallback "users are signing up but not sticking around." Synonyms are well covered and no file extensions are relevant to this non-file skill.

Distinctiveness Conflict Risk

The skill occupies a clear niche (post-signup onboarding and activation) and explicitly disambiguates adjacent skills ("For signup/registration optimization, see signup. For ongoing email sequences, see emails."), minimizing conflict risk. The only minor overlap candidate, "empty states," is presented within the onboarding context.