# Rat P4p5 Impl Verify
> Phase 4-to-5 pipeline: implement RTL then verify from existing P1-3 docs, with P5-to-P4 feedback; stops before Phase 6. Trigger: 'implement and verify'.
- Skill: `babyworm/rat-p4p5-impl-verify` (Agent Skill)
- Install (CLI): `npx skillmds@latest add babyworm/rat-p4p5-impl-verify`
- Raw SKILL.md: https://api.skillmd.com/api/skills/babyworm/rat-p4p5-impl-verify/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: babyworm (https://skillmd.com/u/babyworm)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/babyworm/rat-p4p5-impl-verify
---
Execute the Phase 4→5 pipeline (RTL Implementation → Verification) from existing
Phase 1-3 design documents. Produces RTL code, unit tests, and full verification
with feedback loops, stopping before Phase 6 Design Note.
- Phase 1-3 design documents exist and RTL implementation is needed
- User says "implement and verify", "uarch to verify", "Phase 4 and 5"
- Need RTL + verification but not design review (Phase 6)
- Phase 3 μArch specs are not complete (run rat-p1p3-spec-uarch first)
- Only need RTL implementation without verification (use rtl-p4-implement)
- Need the full pipeline from spec (use rat-auto-design)
## Prerequisites
Phase 3 completion with review required:
- `docs/phase-3-uarch/` must contain at least one μArch spec
- `reviews/phase-3-uarch/uarch-review.md` must exist
If prerequisites are missing: WARNING — recommend completing Phase 1-3
(via `/rtl-agent-team:rat-p1p3-spec-uarch`). Proceed with available artifacts — orchestrator will adapt scope.
## Execution
Task(subagent_type="rtl-agent-team:uarch-to-verify-orchestrator",
prompt="Execute Phase 4→5 RTL implementation and verification pipeline. User input: $ARGUMENTS")
Do not perform any work directly.
The orchestrator agent manages prerequisite verification, dual-stream Phase 4,
sub-phase Phase 5, feedback loops, and state management.