Conciseness

The body is dense with non-obvious, skill-specific data (tool parameter quirks, the HPA 10-line restriction, SYNERGxDB scope limits) rather than concepts Claude already knows, so it largely earns its tokens. It is not a 5 because of repeated content: the HPA supported-line list appears three times (Phase 0 table, Phase 2B, Error Handling) and generic mantras like "LOOK UP, DON'T GUESS" / "COMPUTE, DON'T DESCRIBE" could be trimmed to one line each.

Actionability

Nearly every section gives copy-paste-ready tool calls with literal parameter values ("DepMap_get_cell_lines(tissue='Lung', page_size=20)", "cBioPortal_get_mutations(study_id='ccle_broad_2019', gene_list='EGFR,KRAS,TP53')"), executable bash for the bundled script, and numeric decision thresholds (Chronos < -0.5 = essential, weighted criteria with max = 27). This matches the 5 anchor: fully executable guidance covering the common cases (5 use patterns, 5 phases).

Workflow Clarity

A clear five-phase sequence, each phase with an explicit Goal and OUTPUT, plus an Error Handling table for recovery paths and a Completeness Checklist that functions as a final validation step — matching the 5 anchor (clear sequence, explicit validation, error-recovery guidance). Operations are read-only lookups, so the destructive-operation cap does not apply.

Progressive Disclosure

The single bundle file is clearly signaled and one level deep ("use the bundled script scripts/depmap_gene_dependency.py", verified to exist and behave as described), sections are well organized, and there are no nested references. It is not a 5 because there is no references/ directory at all — the 25-line Phase 0 tool parameter table and the Quick Reference cell-line table are inlined API/lookup material that would fit a references/ file, per the 4 anchor ("most content is appropriately placed; minor organization gaps").

Specificity

The description lists multiple concrete actions — "identity verification, mutation/CNV profile, gene dependencies, drug sensitivities, and druggable targets" — covering the full workflow comprehensively, matching the top anchor ("Lists multiple specific concrete actions; comprehensive coverage"). It is not a 4 because coverage spans input query through ranked output with no notable gaps.

Completeness

Both "what" ("Cross-references DepMap, Cellosaurus, COSMIC, PharmacoDB to deliver identity verification, mutation/CNV profile, gene dependencies, drug sensitivities, and druggable targets") and "when" ("Use to answer 'which cell line should I use for studying gene X?' or 'is this cell line a good model for cancer Y?'") are explicit, with concrete trigger phrases — exactly the 5 anchor. Voice is third person throughout ("Cross-references", "Outputs"), so no voice penalty applies.

Trigger Term Quality

Natural trigger phrases are present in users' own words: "which cell line should I use for studying gene X?" and "is this cell line a good model for cancer Y?", plus keywords like mutation, drug sensitivities, DepMap. It falls short of the 5 anchor because common variations users would say are absent (e.g., "cell line authentication", "STR profiling", "drug response", "IC50", "CRISPR screen").

Distinctiveness Conflict Risk

A clear niche — cancer cell-line selection/profiling — anchored by named databases (DepMap, Cellosaurus, COSMIC, PharmacoDB) and domain-specific trigger questions, so it is clearly distinguishable from other skills with minimal conflict risk, matching the 5 anchor.