Conciseness

The body is dense and imperative with no conceptual padding, but the Claude Code vs Codex background/heartbeat guidance is repeated three times (Workflow step 6, the Command Pattern comments, and two 'Always Do This' bullets), and several 'Always Do This' bullets on payload flag precedence duplicate content already in references/api.md. This is more than the minor trims of anchor 4, fitting 'mostly efficient but could be tightened'.

Actionability

The Command Pattern block is copy-paste ready with explicit placeholder-substitution comments, exact flags, absolute-path rules, and a worked idempotency-key/naming convention. Ranking instructions name concrete metrics (binding_confidence, iptm, min_interaction_pae) and the exact output file path, fully covering the common cases.

Workflow Clarity

Seven clearly sequenced steps with prerequisite setup handling, an explicit validation checkpoint before the batch submit ("show the USD cost, wait for explicit confirmation"), error-recovery loops (auth failure -> boltz-cli-setup -> retry; sandbox block -> escalate -> retry; detached download restart), and terminal-state monitoring via download-status. Feedback loops for the batch operation are present, so the batch-cap is not triggered.

Progressive Disclosure

The overview points to references/api.md and references/results.md, both real files one level deep, well-signaled with purpose and read-when guidance ("Read references/results.md after download when ranking"), and neither nests further references. It is not a 5 because payload-flag details that belong in api.md are inlined in the 'Always Do This' section, a minor organization gap matching anchor 4.

Specificity

"Screen existing protein binders with Boltz" and "ranking a supplied protein, peptide, antibody, nanobody, or binder library against a target" name the domain and concrete actions with a well-narrowed scope. It sits between the 1-2-action anchor (3) and comprehensive multi-action anchor (5): the screening/ranking actions are specific and cover the skill's purpose, but only 1-2 distinct actions are listed with no mention of supporting steps.

Completeness

Explicitly answers both questions: what ("Screen existing protein binders with Boltz") and when ("Use when ranking a supplied protein, peptide, antibody, nanobody, or binder library against a target") with concrete trigger phrases, matching the anchor-5 example structure exactly. It is not a 4 because the 'when' clause is not merely present but enumerates specific triggering scenarios.

Trigger Term Quality

Covers the natural vocabulary comprehensively: "protein", "peptide", "antibody", "nanobody", "binder library", "target", plus both verbs "screen" and "rank". These are exactly the synonyms a user ranking binders would say; no file extensions apply naturally to this domain, so nothing material is missing.

Distinctiveness Conflict Risk

Clear niche (Boltz binder screening) with an explicit negative boundary ("Not for designing new proteins or screening small molecules") that disambiguates it from protein-design and small-molecule-screening skills. Conflict risk is minimal; nothing pushes it below this anchor.