What problem does it solve? It removes the guesswork of turning an OpenSpec change proposal into working code by walking through the change's task list, reading the right context files, and tracking progress until every task is done. ## Core Features & Use Cases - Change selection and status inspection: Resolves the target change from user input or conversation context, then reads schema, progress, and task state via openspec status and openspec instructions apply. - Guided task implementation loop: Reads the context files (proposal, specs, design, tasks), implements each pending task, and marks checkboxes complete as it goes. - State-aware handling: Detects blocked and all-done states, suggests the next artifact or archiving, and pauses with structured options when ambiguity or errors appear. - Use Case: After drafting a spec-driven change for a new API endpoint, ask the assistant to apply the change and it will implement each task in order, updating the tasks file and reporting progress. ## Quick Start Ask the assistant to implement the tasks from your OpenSpec change, optionally naming the change, for example by saying to apply the add-auth change.