Conciseness

The ~45-line body is lean and assumes Claude's domain competence — it never explains what a slab, adsorption energy, or DFT is, and every bullet is directive rather than explanatory. Only trivial redundancy exists (Quick Start bullet 3 echoes Workflow stage 3), which is not enough to drop from the 5 anchor.

Actionability

Some concrete guidance exists — the house default "k*a ~= 35 Å", the enumerated metric options, and the Output Contract's field list — but most of the body is abstract policy directives ("Lock the ranking metric up front", "Summarize what was compared…") with no executable commands, no example naming scheme or folder layout, and the single suggested tool `write_note` given with no invocation detail. It exceeds the minimal high-level hints of the 2 anchor but is clearly missing key details for the 4 anchor.

Workflow Clarity

The staged sequence is coherent and well-ordered (Quick Start 1–4, Workflow stages 1–4), but validation is only implicit — "Decide what qualifies as enough evidence to stop or escalate" names the idea without any check to run or feedback loop. Because this is a batch screening campaign, the rubric's cap for missing validation in batch operations applies, holding it at 3 despite the clear sequence.

Progressive Disclosure

The body is short and well-sectioned, but its one external pointer — "Load the downstream domain skill for the active stage instead of keeping all details here" — names neither the skill nor a path, and no bundle files exist to back it, making navigation to the deferred details a dead end. This matches the 3 anchor (references present but not clearly signaled) rather than 4, though the body itself is not inlining content that belongs in separate files.

Specificity

The description lists several concrete action areas — "proposal framing, slab and adsorbate strategy, reaction/energy evaluation, and evidence standards" — with minor coverage gaps (e.g., screening and reporting stages appear only in the body). These read more as stage names than the fully concrete, executable action enumeration of the 5 anchor, but they go well beyond the 1–2 actions of the 3 anchor.

Completeness

Both parts are explicit: the "what" is the concrete capability list (proposal framing, slab/adsorbate strategy, reaction/energy evaluation, evidence standards) and the "when" is the explicit trigger clause "Use this skill for end-to-end heterogeneous catalysis workflows". It stays at 4 rather than 5 because the trigger is domain-level only, lacking the "when the user mentions/asks…" task-level phrasing of the 5 anchor; it is well above 3 since the "when" is explicit, not weakly implied.

Trigger Term Quality

Natural domain keywords are present ("heterogeneous catalysis", "catalyst candidates", "slab", "adsorbate", "reaction/energy") that a catalysis researcher would actually say. Common synonyms and variations are missing — "DFT", "computational catalysis", "screening", "density functional theory" — so it falls short of the comprehensive synonym coverage of the 5 anchor.

Distinctiveness Conflict Risk

Terms like "heterogeneous catalysis", "slab and adsorbate strategy", and "comparing catalyst candidates" carve out a clear niche with distinct triggers and minimal conflict risk against generic chemistry, document, or code skills.