What is universal-netlist CLAUDE.md?

Development instructions for Universal Netlist, a server that lets an agent query electronic-design netlists and trace connections between circuit components. It supports Cadence, Altium Designer, and KiCad file formats.

Use it when developing, building, type-checking, testing, or packaging the Universal Netlist server.

It gives the agent the project’s setup, dependency, build, and testing rules, including how to keep its two lockfiles consistent.

How IntelligentElectron/universal-netlist configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to IntelligentElectron/universal-netlist. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/IntelligentElectron/universal-netlist/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/IntelligentElectron/universal-netlist

Made for: Claude Code.

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/instructions/intelligentelectron/universal-netlist/claude-md/github.svg)](https://agentmods.dev/instructions/intelligentelectron/universal-netlist/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/intelligentelectron/universal-netlist/claude-md"><img src="https://agentmods.dev/badge/instructions/intelligentelectron/universal-netlist/claude-md/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/instructions/intelligentelectron/universal-netlist/claude-md"><img src="https://agentmods.dev/badge/instructions/intelligentelectron/universal-netlist/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,984 This file is loaded in full into every session.

When invoked 2,984 The same file — it is already loaded in full.

Security scan C 2 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.

Model	Per session	Once invoked
Fable 5.1	$0.02984	$0.02984
Opus 5.5	$0.01194	$0.01194
Sonnet 5.5	$0.00597	$0.00597
Haiku 4.5	$0.00298	$0.00298

Measured yesterday against content hash 6fd2c093e612, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

universal-netlist CLAUDE.md scanned grade C with 2 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 yesterday.

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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://bun.sh/install | bash -s "bun-v$(cat .bun-version)"

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://bun.sh/install | bash -s "bun-v$(cat .bun-version)"

CLAUDE.md · 259 lines

How it starts

The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Universal Netlist MCP Server

Overview

MCP server for querying EDA netlists and tracing circuit connectivity. Supports Cadence OrCAD/CIS (.DSN), Altium Designer, KiCad, and Universal Netlist formats.

DAT parsing and export_cadence_netlist are dormant in MCP, controlled by src/features.ts. Keep their implementations and regression tests. Developer scripts (scripts/dsn-vs-dat-coverage.ts, scripts/dsn-coverage-report.ts, golden generation) still use DAT as an independent reference; do not advertise that path to MCP clients, the CLI, or user-facing docs.

Development

Setup

bun install         # Prefer bun over npm
npm run setup       # Initialize test fixture submodules
npm run dev

Note: Test fixtures are git submodules. Run npm run setup after clone.

Dependencies

Both lockfiles are committed. Binary packaging installs from bun.lock; CI installs from package-lock.json and produces the npm tarball that is later published unchanged. When you change a dependency, regenerate both lockfiles in the same commit:

bun install                      # updates bun.lock
npm install --package-lock-only  # updates package-lock.json

CI installs with npm ci and binary packaging with bun install --frozen-lockfile. Both fail if the lockfile does not match package.json, so an out-of-date lockfile is caught instead of being silently re-resolved.

Commands

npm run dev          # Run with tsx (auto-reload)
npm run build        # Compile TypeScript to dist/
npm run start        # Run compiled version
npm run type-check   # TypeScript type checking
npm run lint         # oxlint
npm run lint:fix     # oxlint with auto-fix
npm test             # Run tests with Vitest
npm run test:watch   # Run tests in watch mode
npm run compile:all  # Build the five per-arch binaries (any host)
npm run compile:darwin-universal  # Add the legacy lipo'd macOS universal binary (macOS only)

Binary Compilation

Bun compiles the TypeScript into standalone executables. One script does this, and release.yml and the compile:* npm scripts all call it, so you can reproduce a release binary locally:

Read the full file on GitHub · 259 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.

yesterday Changed · +2 lines · +70 tokens per session 6fd2c093e612
2d ago Changed 58be12b272a9
20d ago Changed · +20 lines · +293 tokens per session c6fd7d6207f6
1mo ago Changed · +1 lines · +36 tokens per session f89ca93737f2
1mo ago Changed · +8 lines · +106 tokens per session bd74088c15cb
2mo ago First seen · 228 lines · 2,479 tokens per session scan C 3aa51f6fc5b3

Subscribe to this mod's changes

universal-netlist CLAUDE.md is an instructions file published in the GitHub repository IntelligentElectron/universal-netlist (56 stars, last pushed today), licensed Apache-2.0. It adds 2,984 tokens to every session, about $0.0119 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

altium cadence eda kicad mcp netlist

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

universal-netlist: Instructions file for Claude Code