Conciseness

The body is two lines — a maintenance comment and one directive — with zero padding or explanation of concepts Claude already knows. Every token earns its place, matching the 'lean and efficient' top anchor.

Actionability

'Load and follow the shared skill at `~/.agents/skills/homebrew/SKILL.md`' is a concrete, executable directive with an exact path and unambiguous action. Not 5 because there is no fallback guidance and no summary of what the shared skill covers, so the reader gets no task-specific detail if the pointer fails.

Workflow Clarity

This is a simple single-action skill and that action ('load and follow the shared skill') is unambiguous, which per the simple-skill note earns the top score. No destructive or batch operations are involved, so no validation cap applies.

Progressive Disclosure

Structurally it is the right pattern — a lean overview with one clearly signaled, one-level-deep reference — but the reference points to an absolute home-directory path that does not exist in this environment, and the bundle ships no references/, scripts/, or assets/ content at all. The disclosure chain is therefore broken, leaving no reachable detailed material.

Specificity

Names several concrete actions — 'creating or editing a Brewfile' and 'adding brew install/upgrade automation to a project' — within the specific Homebrew domain. Not 5 because 'a project depends on Homebrew formulae or casks' states a trigger condition without naming what the skill does for it (install, upgrade, audit?), leaving minor coverage gaps.

Completeness

The description is entirely a 'when' clause ('Use when a project depends on... when creating or editing a Brewfile, or when adding... automation') with no explicit statement of what the skill does. This matches the anchor 'only when is present without what'; scoring only what is explicitly stated, the detailed when-clauses do not supply a stated capability, so it cannot reach 3.

Trigger Term Quality

Strong natural keyword coverage: 'Homebrew', 'formulae', 'casks', 'Brewfile', 'brew install', 'brew upgrade' — terms users would naturally say. Not 5 because common variations like 'brew bundle', 'tap', or 'macOS packages' are missing; not 3 because coverage goes well beyond 'some relevant keywords'.

Distinctiveness Conflict Risk

Homebrew is a clear niche and the triggers ('Brewfile', 'formulae', 'casks', 'brew install/upgrade') are unambiguous terms unlikely to fire for any other skill. Minimal conflict risk, matching the top anchor.