Conciseness

The body is lean and assumes Claude's competence, using a dense prefix-classification table rather than prose; minor redundancy ('Advisory only' appears in frontmatter, the How It Works block, and Non-Goals) could be trimmed.

Actionability

Copy-paste-ready bash to live-read the commands directory, a concrete classification rule table, an exact output template, and worked match-mode examples with real command sequences fully cover the common cases.

Workflow Clarity

Both 'How It Works' and 'Match mode' give clearly numbered, sequenced steps with an explicit stop-condition checkpoint; no validate-fix-retry loop is needed because the skill is advisory-only and never executes commands, so the destructive-cap does not apply.

Progressive Disclosure

Single-file skill with no bundle files, organized into well-labeled sections (When to Activate, Core Principle, Family Classification, How It Works, Output Template, Examples, Non-Goals); the large family table is justified inline as the live classification rule, leaving only minor organization gaps.

Specificity

Multiple concrete actions are named — 'Map a described workflow to the right ECC command-GROUP with run-order and stop condition' and 'browse all command-group recipe families' — giving comprehensive coverage of what the skill does.

Completeness

Both 'what' (map workflow to group with run-order + stop condition, browse families) and 'when' (explicit TRIGGER and DO NOT TRIGGER clauses) are clearly and explicitly answered with concrete phrases.

Trigger Term Quality

Natural trigger phrases users would say are comprehensively listed — 'which commands for X', 'what command group runs X', 'show ECC recipes', 'list ECC pipelines', 'how do I run a workflow with ECC' — with synonyms covered.

Distinctiveness Conflict Risk

A clear niche is defined and it is explicitly distinguished from sibling skills ('use ecc-guide', 'use prompt-optimizer'), with negative triggers minimizing conflict risk.