Conciseness

The two-sentence body is lean and assumes Claude's competence, explaining nothing Claude already knows; every token earns its place, matching the 'lean and efficient' anchor.

Actionability

It gives concrete, executable direction ('Walk down each branch of the design tree, resolving dependencies between decisions one-by-one. For each question, provide your recommended answer') and an explicit fallback ('explore the codebase instead'), but it is instructional rather than command/code-driven, so it is mostly actionable with a minor gap rather than copy-paste ready.

Workflow Clarity

A clear sequence is implied — interview relentlessly, walk each branch, resolve dependencies one-by-one, give recommended answers, fall back to codebase exploration — with the codebase-exploration checkpoint acting as a decision gate. It is a simple, non-destructive skill, so the simple-skill exception applies, but there are no explicit error-recovery checkpoints, keeping it just below 5.

Progressive Disclosure

The body is appropriately compact and well-organized with no inlined bulk content or buried references; since the skill is small with no bundle files, structure is good but there are no one-level-deep references to point to, so it is not a full 5.

Specificity

It names specific concrete actions — 'Interview the user relentlessly', 'stress-test a plan', 'get grilled on their design', 'resolving each branch of the decision tree' — but the actions are somewhat abstract relative to a procedural skill, leaving minor coverage gaps, so it sits above the midpoint anchor but not fully comprehensive.

Completeness

It explicitly answers both 'what' ('Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree') and 'when' ('Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me"') with concrete trigger phrases, matching the top anchor.

Trigger Term Quality

It includes natural phrases a user would actually say — 'stress-test a plan', 'get grilled on their design', and the literal trigger 'grill me' — giving comprehensive coverage of how the need surfaces in conversation.

Distinctiveness Conflict Risk

The narrow interview/grilling niche and distinctive 'grill me' trigger make it largely distinct from other skills, but 'stress-test a plan' could marginally overlap with general planning or review skills, so it is mostly distinct rather than minimal-conflict.