Conciseness

The body is lean and assumes competence — no concept explanations, no padding, just commands and a worked example. It stops short of anchor 5 because of minor redundancy: the first Important Notes bullet ("Ensure you are in the correct room before attempting pick up. Use teleport to LOC if necessary") restates Core Workflow step 1, and the Purpose section repeats the frontmatter description.

Actionability

Every step is an executable command with exact syntax (`teleport to LOC`, `look around`, `pick up metal fork`, `examine table`, `open OBJ`), and the Example section is a complete copy-paste-ready trace including the expected observation output ("You move the metal fork to the inventory."). This matches anchor 5's 'fully executable; specific examples cover the common cases'.

Workflow Clarity

The four-step sequence (Navigate → Survey → Acquire → Verify) includes an explicit validation checkpoint — "Check the observation feedback confirms 'You move the [object] to the inventory.'" — and the Important Notes provide error-recovery feedback loops for the failure cases (object not visible → `examine` furniture/containers; closed container → `open OBJ` first). This is a simple, non-destructive skill, so the simple-skill exception applies and anchor 5 is the best fit.

Progressive Disclosure

The body itself is well-organized into clean sections (which would merit 5 for an under-50-line skill with no external files), but the bundle provides references/action_primer.md containing supporting actions (`look at OBJ`, common object locations) that the body never mentions or links to — a bundle file with no navigation path from SKILL.md. Additionally, the body partially duplicates the primer's content (the `examine`/`open` guidance) while omitting its other material, matching anchor 3 ('references present but not clearly signaled; content that should be separate is inline') better than anchor 4.

Specificity

The description names the domain and one concrete action with exact command syntax ("moving it from the environment into the agent's inventory using 'pick up OBJ'"), but offers only this single action — the downstream mentions ("testing, measuring, or placing") describe outcomes of other skills, not actions this skill performs. It matches anchor 3 ('1-2 concrete actions, but not comprehensive') better than anchor 4, which expects several specific actions listed.

Completeness

It explicitly answers both questions: the 'what' is concrete ("Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'") and the 'when' is an explicit 'Use this skill when...' clause with concrete trigger conditions ("requires an object to be manipulated, tested, or transported and it is not yet in your inventory"). This matches the anchor-5 good example pattern of capability sentence plus concrete 'Use when' triggers, and clearly exceeds anchor 4 where the 'when' is generic.

Trigger Term Quality

The 'when' clause supplies good natural keyword coverage — "an object to be manipulated, tested, or transported", "pick up", "inventory" — giving multiple synonymous trigger phrasings a user would naturally say. It falls short of anchor 5 because common variations like 'retrieve', 'get', 'grab', or 'find an object' are absent.

Distinctiveness Conflict Risk

The trigger condition "it is not yet in your inventory" plus the specific 'pick up' mechanics carve out a clear niche distinct from downstream consumers it names (testing, measuring, placing). Minor overlap risk remains with closely related skills in the same suite (e.g., an object-placer or navigation skill), so it fits anchor 4 rather than anchor 5's 'minimal conflict risk'.