Names the domain ('plan', 'domain model', 'terminology') and some actions ('challenges your plan', 'sharpens terminology', 'updates documentation'), but uses somewhat abstract language like 'grilling session' and 'decisions crystallise' rather than listing precise concrete actions.

Clearly answers both 'what' (challenges plan against domain model, sharpens terminology, updates CONTEXT.md and ADRs) and 'when' (explicit 'Use when user wants to stress-test a plan against their project's language and documented decisions').

Includes some relevant terms like 'stress-test', 'plan', 'domain model', 'CONTEXT.md', 'ADRs', and 'documented decisions', but misses common natural variations a user might say such as 'review plan', 'challenge assumptions', 'domain-driven design', or 'architecture review'. Some terms like 'grilling session' and 'crystallise' are stylistic rather than natural trigger terms.

The combination of domain model validation, terminology sharpening, and inline documentation updates (CONTEXT.md, ADRs) creates a clear niche that is unlikely to conflict with generic planning or documentation skills.

Every section earns its place — no explanation of what grilling sessions are, no padding about why domain modeling matters. The skill assumes Claude understands DDD concepts and jumps straight to actionable behavioral instructions. The file structure examples are minimal but necessary to show the convention.

The skill provides highly specific, concrete guidance: exact phrases to use when challenging terminology ('Your glossary defines X as...'), precise criteria for ADR creation (three-part test), inline update instructions, and clear file structure conventions. Each section tells Claude exactly what to do in specific situations.

The session flow is implicit rather than explicitly sequenced — it describes behaviors (challenge glossary, sharpen language, discuss scenarios, cross-reference code, update CONTEXT.md) but doesn't define a clear ordering or when to transition between phases. There's no explicit validation checkpoint for verifying that updates to CONTEXT.md are consistent or that the grilling session has reached sufficient coverage before concluding.

The skill is well-structured with clear sections, and appropriately references external format files (CONTEXT-FORMAT.md, ADR-FORMAT.md) for detailed formatting rather than inlining them. References are one level deep and clearly signaled. However, bundle files weren't provided so we can't verify the referenced paths exist — but the structure itself is sound.