What problem does it solve? Individually well-written project documents can still contradict each other, drop requirements, or drift out of sync, and no single-document review catches that. This Skill judges a finished set of documents as one corpus to decide whether they are mutually coherent and ready to plan from. ## Core Features & Use Cases - Eight-dimension coherence bar: Checks cross-document consistency, root-anchored traceability, contradictions, dependency integrity, divergent duplication, ready-to-plan sufficiency, amend re-review, and version skew. - Single machine-parseable verdict: Emits exactly one terminal VERDICT: approve|revise line, with every finding prefixed by the affected document ids so fixes can be routed per document. - Delta-scoped re-review: When one document changes, it traces the ripple only to dependent documents instead of re-auditing the whole corpus. - Use Case: After a PRD, architecture doc, and API spec each pass their own reviews, run this Skill on the set to confirm the API spec still matches the PRD's auth model before planning begins. ## Quick Start Use reviewing-document-set on my PRD, architecture doc, and API spec to check they are mutually coherent and ready to plan from.