vibe-ic-phase3

vibe-ic-phase3 is a command for Claude Code from vibeic/vibe-ic. It costs 42 tokens per session (1,020 once invoked), scanned A, original, Apache-2.0.

A command for running the third phase of an integrated-circuit design workflow: turning hardware descriptions into a physical chip layout and checking it.

In plain words
What is it for?
Use it on a project with RTL hardware files or process-design-kit files to synthesize, place, route, generate layout data, and run available DRC and LVS checks.
Why use it?
It automates several specialized steps and produces reports showing whether the layout passes design-rule and circuit-matching checks.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

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

Good fit Use it on a project with RTL hardware files or process-design-kit files to synthesize, place, route, generate layout data, and run available DRC and LVS checks.

Compare 6 commands from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add vibeic/vibe-ic
Claude Code
/plugin install vibe-ic

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 vibe-ic-phase3

README.md
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Your own site
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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 vibe-ic-phase3

Your own site · 80×15
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Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,020 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.
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 $0.00042 $0.01020
Opus 5 $0.00021 $0.00510
Sonnet 5 $0.00008 $0.00204
Haiku 4.5 $0.00004 $0.00102

Measured 10d ago against content hash 02f620193772, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

vibe-ic-phase3 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 10d ago.

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/commands/vibe-ic-phase3.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Missing arg? When $ARGUMENTS is empty, prompt the user first: /vibe-ic-phase3 <project-dir> (e.g. /vibe-ic-phase3 1st_benchmark_example/phase2_v0119.48-vendor). The AI must NOT guess the path; a concrete project path is required before continuing.

/phase3 — Phase 3 (silicon backend)

Prerequisite: at least one of <project>/rtl/*.sv and <project>/input/pdk/{liberty,lef}/ is present (PDK can be auto-detected or fall back to sky130A). /phase2 complete is best.

Main execution (program-driven):

python3 ${CLAUDE_PLUGIN_ROOT}/programs/phase3_one_shot_runner.py $ARGUMENTS

The runner automatically:

  1. PDK detect (input/pdk/liberty + lef → custom; fallback sky130A)
  2. macro detect (input/pdk_local//{lib,LEF,PA_GDS,Verilog})
  3. Calibre / Assura DRC + LVS deck detect
  4. yosys synth (macro libs as blackbox)
  5. OpenROAD floorplan + place + CTS + global_route → DEF + sta.rpt
  6. KLayout DEF→GDS (merge macro PA-GDS)
  7. KLayout DRC (when .lydrc or deck is available)
  8. Netgen LVS (when reference netlist is available)

After the run completes, the AI must:

  1. Read <project>/reports/phase3_one_shot.json and inspect the verdict
  2. For every FAIL step:
    • synth FAIL → check phase3/synth/synth.log; common: vendor primitive missing black-box (need to add macro read_liberty -lib), SIMULATION define not effective (runner already set), assertions.sv leaking into synth (runner already filters)
    • pnr FAIL → check phase3/pnr/openroad.log; common: site name detected wrong, metal_prefix detected wrong, CTS buffer not in liberty, die size too small (util > 80% requires enlarging die), missing TRACKS (runner already adds make_tracks), SDC ref FPGA-only port → close-loop fix _detect_pdk heuristic
    • gds FAIL → check KLayout stream-out log; usually LEF conflict (multiple LEF variants for the same macro) → fix lef_by_macro selection logic
    • drc / lvs WAIVED is legal (commercial deck must be run offline); but if .lydrc should exist yet was not found, hint to fix the path
  3. All PASS / PASS_WITH_WAIVERS → hint: tapeout review

Helper skills: synthesis-driver / pnr-orchestrate / drc-orchestrate / lvs-orchestrate / gds-export / tapeout-checklist

Rule: Phase 3 PASS requires synth + pnr + gds all PASS (DRC/LVS may be WAIVED → must be run offline for sign-off before tapeout).


Read the full file on GitHub · 50 lines

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. 10d ago First seen · 50 lines · 42 tokens per session scan A 02f620193772

Subscribe to this mod's changes

vibe-ic-phase3 is a command published in the GitHub repository vibeic/vibe-ic (23 stars, last pushed today), licensed Apache-2.0. It adds 42 tokens to every session and 1,020 once invoked, about $0.0002 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 2026-08-30.