What problem does it solve? Teams using spec-driven development need an independent, read-only check that a change's planning artifacts (proposal, specs, design, tasks) actually comply with the active schema rules and confirmed evidence before moving forward, without accidentally mutating artifacts or treating a review as an approval gate. ## Core Features & Use Cases - Stage-scoped verification: Checks exactly one stage at a time (proposal, specs, design, tasks, impact-review, or planning-review) using the rules returned by the get_change_context MCP call, never reconstructed from memory. - Repository evidence scouting: Delegates single-question current-state checks to a repository evidence scout subagent with strict input/output contracts, anchors, and fallback rules. - Structured findings output: Returns a YAML result with blockers, warnings, notes, check_status, and next_action, plus traceability and repository coverage matrices for full planning reviews. - Use Case: Before approving a design document for a multi-repository change, run the design stage check to confirm every technical decision traces to a requirement and that repository impact matches the delta specs. ## Quick Start Ask the agent to run the spec-driven-extended meta-planning check on change 'add-user-auth' for the design stage and report any blockers.