Conciseness

The ~44-line body is efficient and assumes competence — e.g., 'All containers are pre-opened. Do not use `open` or `close`' and tight command bullets — with no explanations of known concepts. Minor trimmable redundancy remains (teleport guidance appears in both section 2 and 'Directness', and the 'Verification' principle about repeating `look around` is near-trivial), placing it at anchor 4 rather than the fully lean anchor 5.

Actionability

Concrete environment commands are given throughout (`look around`, `teleport to LOC`, `examine OBJ`, `focus on OBJ`, `move OBJ to OBJ`) and the worked example ('teleport to workshop' → 'focus on battery' → 'move battery to purple box') is executable as written. However, step 2 of Execute ('Execute the primary action from the parsed instruction') stays at the template level and more varied concrete command patterns are left to the unlinked reference file, so it falls just short of anchor 5's copy-paste-ready coverage of common cases.

Workflow Clarity

The four-phase sequence (Parse → Survey → Identify → Execute with 'Signal Intent' before the core action) is clearly ordered, and the 'Verification' principle plus 'Use `examine OBJ`... if you need more detail' provide some checkpoints. Validation is soft ('a second `look around` is acceptable') rather than an explicit validate-and-recover loop, matching anchor 4's 'most checkpoints present; minor validation gaps' rather than anchor 5.

Progressive Disclosure

The body is well-sectioned and appropriately short, but the bundle contains references/task_patterns.md (a catalog of task patterns and an object classification guide) that is never referenced from SKILL.md, and the body's 'as shown in the trajectory' pointer resolves to no file present in the bundle. Scoring against the actual bundle structure, existing references that are not signaled from the skill body matches anchor 3 ('references present but not clearly signaled') rather than anchor 4.

Specificity

The description lists several concrete actions — 'Analyzes user instructions... to extract specific task requirements and constraints' and 'identify required objects, target locations, and action sequences' — with only minor coverage gaps (e.g., it does not mention the action-planning output). It names multiple specific capabilities but is not fully comprehensive, matching anchor 4 rather than 5.

Completeness

Both parts are present: a clear third-person 'what' ('Analyzes user instructions... to extract specific task requirements and constraints') and an explicit 'Use when receiving a new task...' clause. The 'when' is explicit but somewhat generic ('receiving a new task') rather than offering concrete varied trigger phrases, matching anchor 4 ('when' could be more explicit or specific) rather than the fully concrete anchor 5.

Trigger Term Quality

Natural trigger phrases like 'receiving a new task', 'task requirements', 'objects', 'target locations', and 'action sequences' are present and would be said by a user in this context, alongside the distinctive 'ScienceWorld' keyword. A few natural variations (e.g., 'instruction', 'goal', 'mission') are missing, so it sits at anchor 4 rather than 5.

Distinctiveness Conflict Risk

'ScienceWorld environments' carves out a clear niche with distinct triggers; no other skill category would plausibly match 'receiving a new task to identify required objects, target locations, and action sequences' in that domain. This clearly matches anchor 5 (clear niche, minimal conflict risk), not anchor 4 which requires some overlap risk with closely related skills.