Conciseness

Several padded sections: a ~25-line "Common Patterns by Technology" catalog (Node.js/Python/Java/... standard ignore patterns Claude already knows), the hook-processing instructions duplicated nearly verbatim between "Pre-Execution Checks" and step 10, and step 7 restating the execution rules already given in steps 5–6. Not 3 because these are several unnecessary sections, not minor tightening; not 1 because the majority (Trello MCP workflow, hook semantics, checklist gating) is project-specific detail Claude cannot know and earns its place.

Actionability

Highly executable: exact commands (".specify/scripts/bash/check-prerequisites.sh --json --require-tasks --include-tasks", "git rev-parse --git-dir 2>/dev/null"), exact MCP tool names, full copy-paste comment templates with example values, and precise checklist-counting regexes. Not 5 because a few instructions are hedged ("with includeChecklists: true if supported", "state: \"complete\" or checked: true, whichever the tool accepts") and the "<merge-base>" placeholder in § C is never given a derivation; not 3 because there is no pseudocode and the guidance is directly executable.

Workflow Clarity

Clear 10-step sequence with explicit validation (checklist PASS/FAIL table gate with "STOP and ask" before implementation, "Halt execution if any non-parallel task fails", step 9 completion validation, "Validation checkpoints: Verify each phase completion before proceeding"), feedback loops for error recovery (error messages with context, "Suggest next steps if implementation cannot proceed", Trello ">3 consecutive Trello calls fail" circuit breaker), and a checklist mechanism — satisfying the batch-operation validation requirement, so no cap applies. Not 4 because validation, recovery loops, and checklists are all explicitly present rather than mostly present.

Progressive Disclosure

Good in-document structure with well-signaled internal cross-references ("Run `## Trello Integration` § A below"), but ~140 lines of Trello integration detail (§§ A–E) and the per-technology ignore-pattern catalog are inlined directly in SKILL.md with no reference files — no references/ bundle exists at all. Not 4 because content that clearly belongs in separate files is inline; not 2 because the document is well-sectioned and easy to navigate, not a wall of text with buried references.

Specificity

Names the domain ("implementation plan", "tasks defined in tasks.md") and one concrete action — "processing and executing all tasks" — but omits major capabilities like checklist gating, ignore-file setup, and Trello progress sync. Not 4 because it lists only a single action rather than several; not 2 because the action is anchored to a concrete artifact (tasks.md) rather than being purely generic.

Completeness

The "what" is clear ("Execute the implementation plan by processing and executing all tasks defined in tasks.md") but there is no "Use when..." clause or equivalent trigger guidance anywhere; per judging guidelines, a missing "when" caps completeness at 3. Not 4 because "when" is entirely absent rather than merely implicit; not 2 because the "what" is concrete.

Trigger Term Quality

Contains relevant keywords ("implementation plan", "tasks", "tasks.md") but misses the natural phrases users would say, such as "implement", "build", "execute the spec", or "spec-kit". Not 4 because keyword coverage is thin with no synonyms or variations; not 2 because the terms present are domain-relevant rather than generic.

Distinctiveness Conflict Risk

The phrase "all tasks defined in tasks.md" pins the skill to the spec-kit workflow, distinguishing it from generic coding skills. Not 5 because "implementation plan" alone is generic and could overlap with other implementation/build skills; not 3 because the tasks.md anchor gives it a recognizable niche.