Conciseness

The body is dense and assumes Claude's competence (no padding about what plans or commands are), but the fail-closed/BLOCKED semantics are restated across the Scope rule section, the catalogue, Phase 2, the self-check, and the Notes, and the 'build used as feature verb' override paragraph is over-explained — it could be tightened.

Actionability

Everything is copy-paste ready: exact documented argument forms per command, an exact BLOCKED message format, a full output template, and worked examples covering emitted, blocked, and tag-override cases.

Workflow Clarity

Phases 0–5 are clearly sequenced with explicit validation (untrusted-plan-text check before emitting, a Phase-5 self-check checklist), and edge cases define recovery paths (ask user to confirm outline, narrow with --scope, propose a split) — matching the checklist/feedback-loop anchor.

Progressive Disclosure

Sections are well-organized and navigation within the file is easy, but the ~260-line single file inlines the full command catalogue with rationale, the precedence/override rule set, and the complete output template — content that clearly belongs in a separate references file.

Specificity

The description lists multiple concrete actions covering the full pipeline ('Read a plan document, decompose it into steps, classify each step, and emit the ready-to-paste ECC slash command') plus the fail-closed behavior ('Steps whose command cannot carry plan scope fail closed instead of being emitted'), with no coverage gaps relative to the skill's actual behavior.

Completeness

Both questions are explicitly answered: a concrete 'what' (decompose, classify, emit command, fail closed) and an explicit 'when' clause ('Use when the user has a multi-step plan and wants the right command for each step without picking it by hand').

Trigger Term Quality

Natural phrases like 'plan document', 'multi-step plan', and 'the right command for each step' are present, but common synonyms users would say (PRD, RFC, implementation plan, 'turn this plan into commands', 'orchestrate this plan') appear only in the body, not the description.

Distinctiveness Conflict Risk

The plan-to-slash-command routing niche is distinct with specific triggers, but 'multi-step plan' phrasing carries minor overlap risk with plan-writing/planning skills that trigger on the same keyword.