Conciseness

The core sections are tight (rules, workflow, output template), but the opening attribution block ("Matt's interview discipline preserved verbatim. Additions: extraction + question + session tools + references + cs-* wrapper") and the closing "**Version:** 1.0.0 **Derived:** ..." footer are repo bookkeeping that duplicate the frontmatter metadata and add no instruction, and the telegraphic Tooling line ("Tools: extractor + generator + tracker. Agent: `cs-grill-master`. Command: `/cs:grill-me`.") needs trimming or expansion. More than minor trimming is removable, so anchor 4 does not fit; it is well above anchor 2 since no sections explain concepts Claude already knows.

Actionability

Rules 1-5 and the Output Pattern template are genuinely concrete ("One question per turn", "If `grep` / `Read` resolves it, do that first", "Q[i]/[total]: [question]"), but the workflow's central commands — "Run `scripts/decision_tree_extractor.py`", "Run `scripts/question_generator.py`", "`scripts/grill_session_tracker.py --action start`" — point at files that do not exist in the bundle, so they cannot be executed. This is more than the 'minor gaps' of anchor 4, but far more concrete than anchor 2's high-level hints.

Workflow Clarity

A coherent six-step sequence exists with an explicit end condition ("When all branches resolved: report 'shared understanding reached'"), but steps 2-4 are hollow because the invoked scripts are missing, step 5's mechanism for "recording answers in the session" is unspecified, and there is no checkpoint for handling disputed or unresolvable answers mid-session. Not anchor 4, since the gaps are not minor; not anchor 2, since the sequence is clearly ordered with few gaps. (No validation cap applies — the skill is non-destructive.)

Progressive Disclosure

The body is short with well-labeled sections and clearly signaled references ("See [references/companion_tooling.md](references/companion_tooling.md)"), but the actual bundle contains no references/ or scripts/ directories — all four referenced paths are dangling, so the navigation the body promises dead-ends. Scored against the actual (empty) bundle structure this is broken rather than merely imperfect, placing it below anchor 4; structure and signaling are still good, so above anchor 2.

Specificity

The description names the domain and 1-2 concrete actions — "Interview the user relentlessly about a plan or design" and "resolving each branch of the decision tree" — but does not list several specific actions the way anchor 4 requires (cf. "Extracts text from PDF files, fills forms, converts pages to images"). It is above anchor 2 because the actions are concrete mechanisms, not generic filler like "Processes PDF files".

Completeness

Both what and when are explicit: what = "Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree"; when = "Use when user wants to stress-test a plan, get grilled on their design, or mentions 'grill me'". This matches the anchor-5 example pattern (clear what + 'Use when...' with concrete trigger phrases), so anchor 4's "could be more explicit" caveat does not apply.

Trigger Term Quality

Natural trigger phrases are present and idiomatic — "stress-test a plan", "get grilled on their design", "mentions 'grill me'" — giving good keyword coverage. Not 5 because common synonyms a user might actually say are missing (e.g. "interview me about my plan", "poke holes in my design", "challenge my assumptions").

Distinctiveness Conflict Risk

Clear niche (adversarial interview of the user about their plan/design) with distinctive triggers — "grill me" and "get grilled" are unlikely to be intended for any other skill. Not 4: the only mildly generic phrase ("stress-test a plan") still resolves to this niche, and the interview-the-user behavior itself has no real competitor-skill overlap.