What problem does it solve? When a plan changes mid-work, OpenSpec change artifacts (proposals, designs, specs, tasks) drift out of sync with each other. This Skill revises the existing planning artifacts of an OpenSpec change so they stay consistent, without ever touching implementation code. ## Core Features & Use Cases - Targeted revision: Apply a specific user-requested edit (e.g., "the design now uses X") to the relevant artifact and propagate consequences across all other existing artifacts. - Coherence review: When asked only to "update" or "make coherent", read all existing artifacts and detect contradictions, gaps, and duplication in any direction. - Schema-agnostic operation: Uses openspec status and openspec instructions to discover artifact ids and paths dynamically, so custom schemas work unchanged. - Use Case: After deciding to switch a change's data layer from REST to GraphQL, ask the Skill to update the change; it revises the design artifact, reconciles the proposal and specs, and confirms each edit before writing. ## Quick Start Ask the assistant to update the OpenSpec change named "add-user-auth" so its artifacts reflect the new decision to use JWT sessions.