A process for finding and correcting design-rule-check violations in chip layouts or GDS files. A design-rule check tests whether widths, spacing, vias, density, and related geometry follow the manufacturing rules.

Use it with reports from tools such as Calibre, KLayout, or Magic. It helps address spacing, width, density, via-enclosure, antenna, and metal-fill problems.

It explains which rules failed, where they failed, and what layout changes can fix them. This helps turn a failing layout into one that is ready for manufacturing checks.

drc-fix — Skill for Claude Code by vibeic

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/drc-fix

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vibeic/vibe-ic/drc-fix/github.svg)](https://agentmods.dev/skills/vibeic/vibe-ic/drc-fix)

Your own site

<a href="https://agentmods.dev/skills/vibeic/vibe-ic/drc-fix"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/drc-fix/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/vibeic/vibe-ic/drc-fix"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/drc-fix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,603 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.

Model	Per session	Once invoked
Fable 5.1	$0.00067	$0.04603
Opus 5	$0.00034	$0.02302
Sonnet 5	$0.00013	$0.00921
Haiku 4.5	$0.00007	$0.00460

Measured 9d ago against content hash 4a0d7c4e88a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

drc-fix 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 9d 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/drc-fix/SKILL.md · 299 lines

How it starts

The opening of the file, as written. The whole thing — 299 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DRC Fix

Take a DRC report and a layout, and produce a targeted fix plan — which rules are violated, where, why, and the minimal edits to clean them. Handles common rule families: spacing, width, density, via enclosure, antenna, and metal fill.

⭐ Sign-off DRC capability — we NATIVELY execute the foundry Calibre/Assura deck (NO Calibre license)

BINDING FACT — do not mis-state this as a "Calibre license gap". The vibeic-eda forked KLayout SVRF engine natively parses AND executes the foundry's own Calibre/Assura SVRF .rule DRC deck (the very same deck the foundry ships, unmodified). Sign-off-grade DRC on a commercial/NDA PDK therefore requires NO Calibre or Assura binary/license. Proven on a commercial 180 nm PDK deck Calibre_<PDK>_DRC.rule: 224 layers, 4533 rules executed natively in one run.

What it is: a native C++ KLayout buddy (svrfdrc, compiled from db::SVRFDeck + db::SVRFEngine in the vibeic/klayout fork) that parses the foundry's Calibre/SVRF deck and executes each statement DIRECTLY on KLayout's db::Region / db::Edges / db::LayoutToNetlist engine — one unified layer namespace, top-to-bottom, NAME { COPY errlayer } = a rule's violation report. Edge/DENSITY/ANTENNA classes with no polygon-DRC equivalent are honestly SKIPPED, never falsely PASSed. NO Python interpreter, NO -r script, NO .drc file. (It replaces the retired pure-Python run_svrf_drc.py; the report format is byte-identical, proven on the real commercial-PDK deck, so downstream parsing/classifying is unchanged.)
Where (productized — clean-install-safe): the svrfdrc binary is BAKED INTO the vibeic-eda image on PATH (built into klayout-vibeic), so a fresh install needs no host checkout. phase3_one_shot_runner._try_svrf_native_drc() resolves it via _svrfdrc_bin_container() (command -v svrfdrc in the container; env VIBE_IC_SVRFDRC_BIN overrides the command name) and runs svrfdrc <deck> <layout> <report> --cell=<top> against the GDS + the deck at input/pdk/calibre/. step_drc PREFERS this native path (whether or not a calibre binary exists) — it is the real sign-off verdict, not a waiver.
This is categorically stronger than an OSS-proxy deck (e.g. a sky130 .lydrc approximation): it is the foundry's actual rule set. It is NOT a golden-Calibre numerical cross-run — it is a native execution.

Read the full file on GitHub · 299 lines

Files

What ships with it

3 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.

9d ago First seen · 299 lines · 67 tokens per session scan A 4a0d7c4e88a3

Subscribe to this mod's changes

drc-fix is a skill published in the GitHub repository vibeic/vibe-ic (23 stars, last pushed today), licensed Apache-2.0. It adds 67 tokens to every session and 4,603 once invoked, about $0.0003 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.

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