Conciseness

The body is command-dense rather than concept-explaining, but the shared axbuild/process-management section is verbose, the pgrep inventory ("pgrep -lx xcodebuild; echo \"pgrep exit=$?\"") appears twice (once in the shared section, once in Mandatory First Steps), and details of axbuild's internal cleanup behavior run longer than an executing agent needs. This matches anchor 3 (mostly efficient with some unnecessary explanation that could be tightened) rather than anchor 4's minor-trim profile.

Actionability

Nearly everything is copy-paste-ready executable bash: scheme discovery via "xcodebuild -list -json" with jq extraction, booted-simulator UDID resolution, fresh mktemp run directories per run, full xcodebuild test invocations (single class/method, skip-testing), and the complete xcresulttool surface (summary, tests, test-details, export attachments with --only-failures, coverage, console logs) plus a manifest-reading command and an error-to-fix table. This matches anchor 5's fully executable, common-case-covering profile.

Workflow Clarity

The sequence (mandatory checks → run → parse → analyze → report) is explicit and paired with genuine validation checkpoints: pgrep exit-code semantics before every Xcode invocation, verifying AXBUILD by running "--help" before use, the booted-simulator check, and rules like "A null failed-test count means uncertainty, not zero" and truncation-marker detection. Error-recovery feedback loops exist (saved-log fallback instead of rebuilding, failure-pattern diagnosis with quick fixes, the error quick reference), so this is a batch operation with validation present and matches anchor 5 rather than anchor 4's minor-validation-gaps profile.

Progressive Disclosure

No bundle files exist (no references/, scripts/, or assets/), so everything — the ~90-line shared axbuild block, Common Failure Patterns, the error quick reference table, and invocation examples — is inlined in a single ~370-line SKILL.md. Section structure is decent, but content that clearly belongs in separate reference files is inline and there are no in-bundle references to signal, matching anchor 3 rather than anchor 4's mostly-appropriate placement with clear references.

Specificity

"run XCUITests, parse test results, view test failures, or export test attachments" names the domain plus four concrete actions, matching the anchor for several specific actions with minor gaps (no mention of tooling like xcodebuild/xcresulttool, coverage, or simulator handling that the body actually covers). It falls short of anchor 5's comprehensive coverage and clearly above anchor 3, which expects only 1-2 concrete actions.

Completeness

The explicit "Use when..." clause with four concrete trigger phrases answers 'when' clearly, and the enumerated actions convey 'what', but the 'what' is only embedded in the trigger list rather than stated as a standalone capability sentence like anchor 5's example structure. This sits above anchor 3 (where 'when' is weak or missing) and matches anchor 4's 'both present, could be more explicit'.

Trigger Term Quality

Natural phrases users would say are present ("run XCUITests", "parse test results", "view test failures", "export test attachments"), but common variations such as "UI tests", "xcresult", or "screenshots" are missing — good coverage with a few natural terms absent, matching anchor 4 rather than anchor 5's synonym-and-extension completeness.

Distinctiveness Conflict Risk

"XCUITests" establishes a clear iOS UI-testing niche with concrete triggers, so it is mostly distinct, but "parse test results" and "view test failures" are generic enough to overlap with closely related testing skills (the body itself references an axiom-testing skill). Minor overlap risk matches anchor 4 rather than anchor 5's minimal-conflict profile.