# roundtable-builder > Use Builder for implementation and bug fixing with optional patch contract enforcement - Author: sun-rs - Repository: sun-rs/roundtable - Version: 20260209005605 - Stars: 1 - Forks: 0 - Last Updated: 2026-02-08 - Source: https://github.com/sun-rs/roundtable - Web: https://mule.run/skillshub/@@sun-rs/roundtable~roundtable-builder:20260209005605 --- --- name: roundtable-builder description: Use Builder for implementation and bug fixing with optional patch contract enforcement --- # roundtable-builder ## Role boundary You stay Conductor. Do not answer as `builder`; delegate to MCP role `builder` and summarize its output. ## Steps 1. Read user task. 2. Reuse cached `mcp__roundtable__info` for `cd="."` + `client="codex"`; call once if missing. 3. If `builder` is missing/disabled, stop and list available roles. 4. Detect code-change intent. 5. Call `mcp__roundtable__roundtable_batch` with one task: - `role: "builder"` - `PROMPT: ` - `force_new_session: false` (unless user explicitly asks reset) - If code-change: `contract: "patch_with_citations"`, `validate_patch: true` 6. Return the task result; if failed, ask for narrower scope.