The body is lean and assumes Claude's competence — it never explains what temperature, weight, or pH are, and every section (Purpose, When to Use, Workflow, Examples, Key Principles) earns its place, matching the lean/efficient anchor; it is above level 2 because there is no unnecessary padding.

It provides fully executable, concrete commands in transcript form ('pick up thermometer', 'focus on thermometer in inventory', 'use thermometer on unknown substance B', 'move unknown substance B to orange box') plus templated workflow steps, matching the copy-paste-ready anchor; the placeholders are justified templating rather than pseudocode, so it is not capped at level 2.

The 7-step sequence is clearly ordered with focus-action readiness checkpoints, but explicit validation/error-recovery feedback loops are not surfaced in the body — they live only in the unlinked decision_workflow.md reference — leaving checkpoints implicit rather than explicit (level 2), short of the explicit-validation level 3.

The body is well-organized into sections, but two bundle files (references/action_glossary.md, references/decision_workflow.md) exist and are never referenced or linked from the main file, so the supplementary detail is poorly signaled and hard to discover — matching the 'references present but not clearly signaled' anchor rather than the well-navigated level 3.

The description lists multiple concrete actions — 'acquiring the tool', 'preparing both tool and target with focus actions', 'executing the measurement via use [TOOL] on [TARGET]', and 'interpreting the resulting value' — matching the anchor for several specific concrete actions; it is not merely naming a domain (level 2).

It explicitly answers both 'what' (acquire, prepare, execute, interpret) and 'when' with an explicit 'Use when the agent needs to measure...' clause, matching the anchor for clearly answering both; it is above level 2 because the when-trigger is explicit, not implied.

It enumerates natural trigger terms a user would say — 'measure', 'temperature', 'weight', 'pH', 'quantitative property' — giving good coverage rather than just one keyword (level 2) or jargon (level 1).

It targets a specific niche — measuring via the distinctive 'use [TOOL] on [TARGET]' syntax with focus actions in ScienceWorld — making it unlikely to fire for unrelated skills, matching the clear-niche anchor.