Conciseness

The body is lean (~40 lines), assumes competence, and never explains concepts Claude already knows; every section (trigger, procedure, considerations, example) earns its place. It sits just below the 5 anchor because of minor redundancy — the 'When to Use' section restates the frontmatter description and step 1 ('Confirm the exact name and location') is near-tautological — but it is far from the padded or over-explaining 2-3 anchors.

Actionability

Fully concrete, executable game commands with exact syntax: `move [SUBSTANCE] to [CONTAINER]`, `examine metal pot`, `look around`, plus a worked end-to-end example showing the expected output ('metal pot (containing chocolate)'). This is copy-paste-ready instruction covering the common case, matching the 5 anchor for an instruction-only skill.

Workflow Clarity

A clearly sequenced 5-step procedure with explicit validation checkpoints (step 3 'examine it to confirm it's empty', step 5 'Verify: Briefly check the container's contents'), an error-recovery loop ('If the transfer fails... look around again and consult the bundled reference'), and an explicit gate ('Proceed to the next skill... only after this verification'). This matches the 5 anchor with feedback loops; this is not a destructive or batch operation, so no cap applies.

Progressive Disclosure

The skill is short and well-sectioned, and the bundle has exactly one one-level-deep reference file (references/common_containers.md) that genuinely holds detail (full container lists, unsuitable containers). It falls short of the 5 anchor because the body only says 'consult the bundled reference' generically without naming or linking the file path, and the reference's 'Verification Commands' section duplicates commands already in the body — minor organization gaps characteristic of the 4 anchor.

Specificity

Concrete actions are named ('Selects a suitable empty container and moves the substance into it', 'transfer a target substance into an appropriate container') with concrete examples ('a pot for heating, a beaker for mixing'), which is solidly at the 4 anchor for several specific actions. However, the description uses second person ('Use when you need to transfer...'), and the rubric guideline mandates reducing specificity by 1 for non-third-person voice, bringing it to 3. It is not a 2 because the domain and actions are concrete, not generic.

Completeness

Both 'what' and 'when' are explicitly answered: what — 'Selects a suitable empty container and moves the substance into it'; when — 'Use when you need to transfer a target substance into an appropriate container for processing' plus explicit sequencing triggers ('Trigger after acquiring the substance and before setting up an apparatus'). This matches the 5 anchor with concrete trigger phrases; a 4 would require the 'when' to be less explicit.

Trigger Term Quality

Good natural keyword coverage for this domain: 'transfer', 'substance', 'container', 'pot', 'beaker', 'heating', 'mixing', 'apparatus', 'moves' — terms a user/agent in this environment would naturally say. Not a 5 because common synonyms and variations (e.g., 'pour', 'prepare', 'place into') are not covered; not a 3 because coverage goes well beyond one or two generic keywords.

Distinctiveness Conflict Risk

A clear niche (substance-to-container transfer in a game world) with sequencing boundaries ('after acquiring the substance and before setting up an apparatus') that reduce overlap with related heating/apparatus skills. Minor overlap risk remains with a hypothetical generic 'move objects' or 'heating' skill, so it does not reach the minimal-conflict 5 anchor; it is well above the broad-overlap anchors 2-3.