Conciseness

The body is ~48 lines with zero padding: a copy-paste template, a compact conventions table, four status-output one-liners, and a one-line chmod reminder. It assumes Claude's competence (no explanation of what bash, shebangs, or ANSI colors are), so every token earns its place — the 'lean and efficient' anchor.

Actionability

Everything is executable and copy-paste ready: a complete template with shebang, 'set -e -o pipefail', and color variables; a conventions table with concrete example names ('model', 'dir', 'count', 'green', 'red', 'nc'); and four ready-made echo commands covering the common status cases. The '# Script logic here' comment is an intentional template slot, not a gap.

Workflow Clarity

This is a simple, single-purpose skill under 50 lines, and the single action — apply the template and conventions when writing a script — is unambiguous, with a clear post-creation step ('chmod +x script.sh' before use) called out under 'Important'. No destructive or batch operations exist that would require validation checkpoints, so the simple-skill exception applies.

Progressive Disclosure

The skill is under 50 lines with no need for external references, and none exist (no references/, scripts/, or assets/ directories — nothing in the body points to missing files). The four well-labeled sections (Template, Conventions, Status Output Patterns, Important) organize the content cleanly, which satisfies the under-50-lines rule for a top score.

Specificity

The description names the domain ("bash script", "shell script", "shell scripting conventions") but states no capabilities of the skill itself — it never says what the skill does (e.g., apply conventions, provide a template, follow safety patterns). This matches the anchor 'Names the domain but actions are minimal or generic'; it is above 1 because the quoted phrases are domain-specific rather than pure abstraction, but below 3 because there is no enumerated action the skill performs.

Completeness

The 'when' is explicit ('This skill should be used when the user asks to...'), but the 'what' is entirely absent — the skill's purpose (conventions, templates, status output patterns) is never stated. This is the mirror of anchor 3 ('only when present without what', per anchor 2's example 'Use when working with documents'). The explicit trigger guidance satisfies the 'Use when...' clause, but without a 'what' it cannot exceed 2.

Trigger Term Quality

Natural phrases users would actually say are quoted directly: "create a bash script", "write a shell script", "shell scripting conventions". This fits 'Good keyword coverage; a few natural terms missing' — absent are common variations such as '.sh', 'make a script', 'bash', or 'shell command'. Not 5 because that anchor requires comprehensive synonym/extension coverage.

Distinctiveness Conflict Risk

Triggers are narrowly scoped to bash/shell scripting, so it is 'mostly distinct; minor overlap risk' — it could still fire alongside a general 'scripting' or 'python scripting' skill since neither '.sh' nor 'bash' alone disambiguates all cases. It is above 3 because 'bash script'/'shell script' are clearly niche triggers, but below 5 because a sibling general-scripting-conventions skill would still overlap.