Conciseness

The body is mostly tight tables and checklists, but the Trigger section duplicates the frontmatter description nearly verbatim, the 'Launch 5 subagents simultaneously' block re-enumerates the Step 2 category table, and the long Example Output and Notes sections pad the file. This matches 'mostly efficient but includes some unnecessary explanation or could be tightened' rather than the efficient level 4.

Actionability

Concrete, executable guidance dominates: 'Use the Task tool with subagent_type=Explore', a category-to-files comparison table, exact output table schemas, and fix safety rules ('Read before edit', 'Apply minimal, targeted edits using the Edit tool'). It falls short of a 5 because the subagent launch blocks are schematic lists rather than actual subagent prompts to copy.

Workflow Clarity

Steps 1-5 are clearly sequenced with most checkpoints present: ask 'Would you like me to fix these violations?' before fixing (skipped only with the fix argument), 'Verify after fix: Ensure the fix doesn't introduce new conflicts', and post-fix re-validation. The re-run validation step is only 'optionally', which is the minor validation gap that keeps it below the explicit-feedback-loop anchor.

Progressive Disclosure

The body is well-sectioned but entirely monolithic — no references/ or scripts/ bundle files exist, and everything (per-category checklists, example output, fix guidelines) is inlined in one ~215-line file. This fits 'some structure but could be better organized... content that should be separate is inline'; it is above level 2 because the sections are clearly organized, but the detailed category checks and example output clearly could live in reference files.

Specificity

The description lists several concrete actions — 'Cross-validate documentation and artifacts... for consistency, conflicts, and contradictions', 'Supports automatic fixing with "validate and fix" argument' — plus five named validation categories. It stops short of a 5 because 'artifacts' is undefined and 'Runs parallel subagents' is implementation detail rather than a capability.

Completeness

It clearly answers both questions: the 'what' is stated up front ('Cross-validate documentation and artifacts across the codebase for consistency, conflicts, and contradictions') and the 'when' is explicit ('Use when users ask to "cross-validate", "validate docs"...'). Concrete trigger phrases and the fix-mode argument make both halves explicit, matching the top anchor.

Trigger Term Quality

Natural trigger phrases are well covered: '"cross-validate"', '"validate docs"', '"check documentation consistency"', '"audit documentation"', 'find conflicts/contradictions in docs'. A few common variations users would say (e.g., 'docs out of sync', 'documentation drift', 'inconsistent docs') are missing, so it is not a 5.

Distinctiveness Conflict Risk

Documentation cross-validation with five named categories is a clear niche with distinct triggers. There is minor overlap risk with generic doc-review or audit skills, which keeps it below the top anchor.