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Build a fast, low-ceremony prototype to validate an idea quickly, then report the shortest path to production hardening.
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Based on SOC occupation classification
Perform a concise, prioritized review of current code changes with concrete fixes, using the repository’s configured review policy and guides.
Seed a target repository with the required harness contract files and directory structure, and optionally draft initial repository-specific content when enough context is available.
Convert an informal feature idea into a concise, implementation-ready PRD in a work item directory under docs/exec-plans/current/.
Transform a PRD into a practical FDD in a work item directory under docs/exec-plans/current/ with concrete boundaries, interfaces, data impacts, and verification strategy.
Produce a slice-level detailed design doc at <work_item_dir>/design/<slice_slug>.md by mapping slice responsibilities, interfaces, edge cases, and tests to the work item requirements.
Implement one phase from a work item plan under docs/exec-plans/current/ using the repository contract as the source of truth.
| name | harness-prototype |
| description | Build a fast, low-ceremony prototype to validate an idea quickly, then report the shortest path to production hardening. |
| examples | ["$harness-prototype Build a quick spike for inline editing","Prototype a rough ingestion flow for uploaded content"] |
| when_to_use | ["The user wants a throwaway spike, proof of concept, or feasibility check."] |
| when_not_to_use | ["The task is a bug fix requiring regression-first workflow.","The task needs durable planning artifacts first."] |
Always load before prototyping:
references/persona.mdreferences/approach.mdreferences/considerations.mdreferences/output_requirements.mdARCHITECTURE.mdharness.ymldocs/STACK.mddocs/TOOLING.mddocs/TESTING.mddocs/PRODUCT_SENSE.mddocs/FRONTEND.mddocs/BACKEND.md