phase2-rtl-verify

phase2-rtl-verify is a skill for Claude Code from vibeic/vibe-ic. It costs 78 tokens per session (2,317 once invoked), scanned A, original, Apache-2.0.

A quality check for RTL, the hardware-description code used to define digital circuits, after the second design stage produces it and its supporting files.

In plain words
What is it for?
It helps review RTL against its specification, inspect synthesis and formatting issues, and confirm that the RTL, specification, and reference testbench are present and pass their checks.
Why use it?
A passing generation step can still leave incorrect circuit behavior, inferred latches, or values cut to the wrong width. This check requires automated verification before the result is accepted.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 plugins/vibe-ic/programs/phase2_verify_aggregate.py \.

Part of the vibe-ic plugin — 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server shipped together

Good fit It helps review RTL against its specification, inspect synthesis and formatting issues, and confirm that the RTL, specification, and reference testbench are present and pass their checks.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/vibeic/vibe-ic
agentmods
npx agentmods add skills/vibeic/vibe-ic/phase2-rtl-verify

Made for: Claude Code.

Or install vibe-ic, the plugin that ships this one along with the rest of its 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for phase2-rtl-verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase2-rtl-verify/github.svg)](https://agentmods.dev/skills/vibeic/vibe-ic/phase2-rtl-verify)
Your own site
<a href="https://agentmods.dev/skills/vibeic/vibe-ic/phase2-rtl-verify"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase2-rtl-verify/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for phase2-rtl-verify

Your own site · 80×15
<a href="https://agentmods.dev/skills/vibeic/vibe-ic/phase2-rtl-verify"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase2-rtl-verify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,317 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00078 $0.02317
Opus 5 $0.00039 $0.01158
Sonnet 5 $0.00016 $0.00463
Haiku 4.5 $0.00008 $0.00232

Measured 6d ago against content hash 5a96dd8fc0fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

phase2-rtl-verify scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (tests/test_compliance.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

vibe-ic-marketplace/plugins/vibe-ic/skills/phase2-rtl-verify/SKILL.md · 160 lines

How it starts

The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phase 2 RTL Verification

Doctrine (v0.1.50): 把修法寫進工具,而非寫進 prompt. Programs first; AI is the backstop on residual narrative.

Mandatory Deterministic Preflight

python3 plugins/vibe-ic/programs/phase2_verify_aggregate.py \
    <project_dir> \
    --out-md /tmp/phase2_verify.md \
    --out-json /tmp/phase2_verify.json --strict

The aggregator runs rtl_precheck_gate, spec_conformance_check, and rtl_hygiene_lint, AND checks RTL/SOF/TB artifact presence. Refuse to claim Phase 2 PASS without the aggregator's verdict: PASS.

How you are invoked: the stage-1 ON-PASS review

This skill is the AI half of stage1.on_pass_review in flow/phase1_phase2_phase3.yaml — the flow's ONE declaration of it. Until that block existed, this skill (and the other seven in the verification tier) appeared ZERO times in the flow: every skills: array there hangs on a FAILURE trigger, so the AI was wired as an author and as a repairer and never as a reviewer of a program that PASSED.

Order, and it is not negotiable:

  1. The program runs first. design_one_shot_runner produces the stage-1 artefact; the stage's gates pass.

  2. The deterministic on-pass rung runs next.

    python3 programs/stage_on_pass_review.py <project> --stage stage1 \
        --compliance reports/audit/flow_compliance.json \
        --json reports/phase2/gates/stage1_on_pass_review.json
    

    It reads the INTENT (phase1/generated_docs/L9_INTEGRATION_SPEC.json) and the ARTEFACT (phase2/stage1/rtl/, reports/phase2/). Exit 0 = ACCEPT, 1 = REJECT with evidence, 2 = NOT CHECKED. On a rejection it WRITES the run's own regression under reports/phase2/gates/on_pass_review/ — a test that FAILS on this run and passes when it is repaired.

  3. You take what is left. Everything the program ACCEPTED or reported as NOT CHECKED is your input, not your conclusion. Read its --json record first: rules[] says which contract was decided deterministically, so you do not re-derive it and do not contradict it without new evidence.

Read the full file on GitHub · 160 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 160 lines · 78 tokens per session scan A 5a96dd8fc0fc

Subscribe to this mod's changes

phase2-rtl-verify is a skill published in the GitHub repository vibeic/vibe-ic (23 stars, last pushed yesterday), licensed Apache-2.0. It adds 78 tokens to every session and 2,317 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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