Conciseness

The body is lean and operational — it explains no concepts Claude already knows (no 'what is PheWAS' padding) and every line states a rule, I/O field, or command, matching the lean level-3 anchor rather than the mostly-efficient level 2.

Actionability

Provides a copy-paste executable command ('echo ... | python scripts/tpmi_phewas.py'), concrete input/output field lists, and ready-to-use JSON patterns, satisfying the fully-executable level-3 anchor.

Workflow Clarity

This is a simple single-task skill whose action (resolve input to GRCh38, run the script, summarize) is unambiguous; since the operation is read-only and neither destructive nor batch, the missing-validation cap does not apply and level 3 is warranted.

Progressive Disclosure

At under 50 lines with well-organized sections and a single one-level-deep, real reference (scripts/tpmi_phewas.py, which exists), it meets the simple-skill allowance for level 3 without needing deeper file splits.

Specificity

Lists multiple concrete actions — 'Fetch compact TPMI PheWAS summaries', 'accepting rsID, GRCh37, or GRCh38 input', and 'resolving to the required GRCh38 query' — matching the anchor for specific concrete actions rather than the vague single-action level 2.

Completeness

Explicitly states both what it does (fetch/resolve summaries) and when to use it via the 'Use when a user wants concise TPMI association results for one variant' clause, satisfying the level-3 anchor for both what and when.

Trigger Term Quality

Covers the natural terms a TPMI user would actually say — 'TPMI PheWAS', 'rsID', 'GRCh37', 'GRCh38', 'association results', 'variant' — giving good domain coverage rather than only jargon or a single keyword.

Distinctiveness Conflict Risk

The 'TPMI PheWAS' niche with its variant-input triggers is highly specific and unlikely to fire for unrelated skills, matching the clear-niche anchor rather than the overlap-prone level 2.