Every section earns its place with actionable tables, formulas, and examples. No explanation of concepts Claude already knows (like what tests are or why fast feedback matters). The content is dense with useful information without padding.

Provides a concrete scoring formula, ecosystem-specific tooling commands, a worked example with actual test names and scores, and a complete output format template. The guidance is specific and executable.

Clear tiered execution model with explicit cutoffs and run conditions. The worked example demonstrates the complete workflow from change to priority order to run plan. The 'Do not' section provides explicit validation guardrails.

Well-organized with clear sections (signals, formula, ecosystem tools, tiers, worked example, anti-patterns, output format). Content is appropriately self-contained for a skill of this scope without needing external references.

Lists multiple specific concrete actions: 'runs tests covering changed code first, historically flaky/failing tests early, and slow low-value tests last' - these are clear, actionable ordering strategies.

Clearly answers both what ('Orders tests so failures surface earliest' with specific strategies) AND when ('Use when the suite is too slow to run in full on every change, when CI feedback takes too long, or when deciding what to run in a smoke-test tier').

Includes natural terms users would say: 'suite is too slow', 'CI feedback takes too long', 'smoke-test tier', 'run tests', 'changed code'. These match real developer vocabulary when discussing test optimization.

Clear niche focused specifically on test ordering/prioritization with distinct triggers around CI speed and test suite optimization. Unlikely to conflict with general testing or code quality skills.