electrum: Instructions file for Claude Code

CLAUDE.md

electrum CLAUDE.md is an instructions file for Claude Code from yoelf22/electrum. It costs 1,181 tokens per session, scanned A, original, MIT.

A repository instruction file for Electrum, a toolkit that turns a short product idea into exploration, design, specification, and validation material. It records installation steps, commands, project structure, and the need for a Playwright browser for image generation.

In plain words
What is it for?
Use it when working on Electrum, installing its Python dependencies, running its product workflow, building HTML, or generating diagrams and illustrations.
Why use it?
It gives a coding agent the project-specific commands and context needed to work in the repository instead of guessing how the scripts and workflow fit together.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

This is yoelf22/electrum's own configuration. It tells Claude Code how to work on electrum itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything electrum configures →

Reuse

Borrowing it

Nothing to install: this file belongs to yoelf22/electrum. 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/yoelf22/electrum/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/yoelf22/electrum

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.

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README.md
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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.

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Per session 1,181 This file is loaded in full into every session.
When invoked 1,181 The same file — it is already loaded in full.
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 $0.01181 $0.01181
Opus 5.5 $0.00472 $0.00472
Sonnet 5.5 $0.00236 $0.00236
Haiku 4.5 $0.00118 $0.00118

Measured yesterday against content hash a4e2ec5a0308, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

electrum CLAUDE.md 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 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.

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.

CLAUDE.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Electrum is a product definition toolkit for software-augmented hardware. It provides a 5-phase AI-assisted workflow (via the /electrum Claude Code skill) that takes a one-sentence product idea through exploration, design, specification and validation, bundled into one HTML page. The toolkit also works without AI — the markdown templates in templates/ can be filled in manually.

Key Commands

# Install dependencies
pip install -r requirements.txt

# Install Playwright browser (needed for image generation)
python -m playwright install chromium

# Run the main workflow (inside Claude Code)
/electrum <product idea in one sentence>

# Run scripts directly
python3.11 scripts/build_html.py output/<slug>
python3.11 scripts/build_docx.py output/<slug>     # Word export: cover, contents, documents
python3.11 scripts/block_diagram.py
python3.11 scripts/generate_illustration.py

There is no build system, test suite, or linter. The project is markdown templates + Python scripts.

Architecture

The /electrum Skill (.claude/skills/electrum/SKILL.md)

The core of the project. Defines a 5-phase sequential workflow:

  1. Explore — Map HW/SW boundary, classify product (static electronic / electromechanical / hybrid), identify risks; propose the domain leads for user approval (team.md)
  2. High-Level Design — Block diagram (matplotlib PNG) + one-page system overview
  3. Component Arrangement — Spatial layout diagrams (matplotlib PNG, 2-3 alternatives side-by-side)
  4. System Description — Full engineering spec (10 sections; §4 one subsection per approved lead, each with a Handoff block), written in two stages, then executive_summary.md written last from it and placed first in the bundle
  5. Gate Checklist — 103-item PASS/FAIL/N/A validation against templates/checklist.md

Each phase writes files to output/<slugified-idea>/ and stops for user review before advancing.

Read the full file on GitHub · 91 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. yesterday Changed · +6 lines · +184 tokens per session a4e2ec5a0308
  2. 4d ago First seen · 85 lines · 997 tokens per session scan A 65f9c9b99e2b

Subscribe to this mod's changes

electrum CLAUDE.md is an instructions file published in the GitHub repository yoelf22/electrum (8 stars, last pushed 2d ago), licensed MIT. It adds 1,181 tokens to every session, about $0.0047 per session on Opus 5.5. 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 2026-10-26.

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