Mostly lean and assumes Claude's competence (no 'what is a stakeholder' filler), but the 12-item failure-patterns list overlaps with the tone section's 'What to avoid' (hedging, burying the lede, implicit asks appear in both) and could be tightened by deduplicating.

Provides four copy-paste-ready templates (weekly update, exec review, bad news, decision request), a concrete 5-question framework, and a specific cut-list ('Cut adjectives (great, awesome, excellent, exciting)'); absence of code is fine for this instruction-only skill.

The 7-step workflow is clearly sequenced with explicit checkpoints (Step 5 'Verify the request', Step 6 'Check the audience', Step 7 send and follow up), and the skill involves no destructive/batch operations that would require validation loops.

The body is a well-organized overview with a single clearly-signaled one-level-deep reference to references/update-templates.md (verified to exist, 452 lines of annotated templates), matching the 'clear overview with well-signaled one-level-deep references' anchor.

Lists multiple concrete actions ('writing status updates, preparing executive reviews, sharing technical decisions with non-technical audiences, managing up, communicating bad news, designing the communication cadence'), matching the 'multiple specific concrete actions' anchor rather than the partial coverage of a 2.

Explicitly answers both what ('Communicate effectively with stakeholders across functions and seniority levels') and when ('Use this skill when writing status updates...'), with an explicit 'Use this skill when' trigger clause.

Provides good coverage of natural terms users would say ('stakeholder update, status report, executive summary, exec review, manage up, communicate bad news, project comms, weekly update'), not merely some relevant keywords.

Scoped to internal stakeholder comms with distinct triggers and explicit exclusions (incident-response, documentation-strategy, customer-facing), giving it a clear niche unlikely to fire for the wrong skill.