Conciseness

Mostly lean and assumes Claude's competence without explaining basic concepts; domain-specific cautions (silent numbering offsets, RSA>1.0) earn their place, with only minor passages that could be tightened.

Actionability

Provides copy-paste-ready Python calls with concrete parameters (pdb_id, chains, ligand_resnames, cutoffs) plus return-shape descriptions, covering the common cases from PDB lookup through annotation to downstream use.

Workflow Clarity

Five clearly sequenced steps with an explicit validation checkpoint in Step 3 (landmark assert, offset recording, 'Do not silently rebase positions') that functions as an error-recovery feedback loop.

Progressive Disclosure

Well-organized into clearly signaled sections (When to use, Required inputs, Workflow, Interpretation table, Honest limitations, Cross-references) with easy navigation; no bundle files exist, so content stays appropriately inline with only minor split opportunities.

Specificity

Lists multiple concrete actions (interface vs partner chain, ligand pocket, buried vs solvent-exposed, optional secondary structure) that would warrant a 5, but the second-person 'Use when you need to anchor' triggers the voice penalty reducing specificity by one point.

Completeness

Explicitly answers both what ('produce a per-residue annotation table: ...') and when ('Use when you need to anchor a variant-interpretation or DMS analysis...') with concrete trigger phrases.

Trigger Term Quality

Strong domain-natural terms ('PDB structure', 'binding interface', 'ligand pocket', 'buried vs solvent-exposed', 'DMS heatmap', 'variant-interpretation') cover what users say, with only minor synonyms (e.g. ASA/RSA/solvent accessibility) absent.

Distinctiveness Conflict Risk

Occupies a clear niche (per-residue PDB structural annotation anchored to DMS/variant interpretation) with distinct triggers and minimal overlap with other skills.