Conciseness

The body is almost entirely Atlas-specific API detail Claude would not know (query params, filter-boolean gotchas, pinned track key schema) with no padding about known concepts, e.g. "Filters in `f` map to three primary evaluation groups". It is not a 5 because the track-predictions command example appears twice ("Prerequisites" and section 5), the section titled "Prerequisites" actually contains usage examples, and several IMPORTANT callouts are wordy ("leading to severe latency or page hanging") and could be trimmed.

Actionability

Four copy-paste-ready commands ("uv run scripts/alphagenome_atlas_links.py variant \"chr9:128225994:G>A\" --biosample K562 --modalities RNA_SEQ,DNASE,CHIP_TF", plus locus, table, track-predictions) cover the common cases, all of which match the actual script subcommands. The full CLI option table ("--biosample, -b (*string*, default: `Muscle_Skeletal`)") and exact filter/key schemas make guidance fully executable with no gaps.

Workflow Clarity

The single action per task is unambiguous: pick one of four demonstrated subcommands, supply the documented arguments; the motif recipe is a clear numbered sequence ("1. Append entries... 2. Set viewport interval `i`... 3. Configure `f`"). It is not a 5 because there are no validation checkpoints on generated output and no explicit decision guidance mapping user goals to subcommands beyond the examples, and the mislabeled "Prerequisites" header plus numbering starting at "## 2" slightly obscure the entry point.

Progressive Disclosure

Structure is good: clear section headers, and the only bundle file (scripts/alphagenome_atlas_links.py) is well-signaled and repeatedly delegated to ("handled automatically by scripts/alphagenome_atlas_links.py", "Always construct track prediction URLs using scripts/alphagenome_atlas_links.py track-predictions") — one level deep and real. It is not a 5 because ~250 lines of URL parameter reference, pinned-track key schema, and manual-layout detail are inlined in SKILL.md with no references/ files to split advanced material into.

Specificity

"Constructs deep-links and URLs for the AlphaGenome Atlas website. Supports generating single-variant exploration links (1-based VCF-style coordinates), genomic locus views (1-based closed chr:start-end), candidate summary tables, and AlphaGenome reference vs. alternate predictions" lists four distinct concrete capabilities with coordinate-format details, matching the comprehensive multi-action anchor. It is not a 4 because coverage is complete rather than having minor gaps.

Completeness

Explicitly answers what ("Constructs deep-links and URLs for the AlphaGenome Atlas website. Supports generating single-variant exploration links... candidate summary tables, and AlphaGenome reference vs. alternate predictions") and when ("Use when visualizing, exploring, charting, or linking genetic variants and genomic loci... or when asked to inspect, view, or link predictions for a genomic variant") with concrete trigger phrases, and even adds an explicit negative boundary. Not a 4 because both halves are fully explicit rather than the 'when' merely being adequate.

Trigger Term Quality

The trigger clause "Use when visualizing, exploring, charting, or linking genetic variants and genomic loci on the AlphaGenome Atlas, or when asked to inspect, view, or link predictions" provides good natural-verb coverage with synonyms. It is not a 5 because noun phrasings users would naturally say — "generate/share a link", "URL", "deep-link" — appear only in the what-clause, not the trigger clause, and no file-extension-style tokens apply.

Distinctiveness Conflict Risk

The skill is tightly scoped to "the AlphaGenome Atlas" and actively disambiguates siblings: "Don't use for computing raw AlphaGenome variant predictions directly without Atlas URLs (use alphagenome-single-variant-analysis or alphagenome-variant-impact-score)". This clear niche with explicit boundary routing matches the minimal-conflict anchor; nothing places it at 4.