What is arcforge CLAUDE.md?

A repository instruction file for Arcforge, a toolkit of skills for Claude Code. It lists setup commands, test suites, static checks, linting, and development commands.

It helps set up Arcforge, run its JavaScript, Python, shell, and integration tests, perform linting, and start a development session.

It gives contributors and coding agents one place to find the project's required checks and development workflow. This avoids missing checks that are not part of the main test command.

How GregoryHo/arcforge configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to GregoryHo/arcforge. 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/GregoryHo/arcforge/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/GregoryHo/arcforge

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/gregoryho/arcforge/claude-md/github.svg)](https://agentmods.dev/instructions/gregoryho/arcforge/claude-md)

Your own site

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

Per session 316 This file is loaded in full into every session.

When invoked 316 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.

Model	Per session	Once invoked
Fable 5.1	$0.00316	$0.00316
Opus 5.5	$0.00126	$0.00126
Sonnet 5.5	$0.00063	$0.00063
Haiku 4.5	$0.00032	$0.00032

Measured 2d ago against content hash 276cee1deeb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

arcforge 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 2d 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.

CLAUDE.md · 31 lines

What it actually says

arcforge

Project Overview

Skill-based agent toolkit for Claude Code.

Commands

npm test - Run all 5 test runners (all must pass)
npm run test:scripts - Jest (tests/scripts/ — engine + contract lints)
npm run test:hooks - Node --test (hooks/__tests__/)
npm run test:node - Custom runner (tests/node/ — CLI contract, YAML, locking)
npm run test:skills - pytest (tests/skills/ — skill structure)
npm run test:observer-daemon - Bash (tests/observer-daemon/)
npm run check:versions / check:docs / check:cli-consumers / check:hooks / check:eval-targets / check:product / check:file-size - the 7 static checks (CI-gated, not part of npm test)
npm run lint - Biome lint + format check (CI blocks merge on failure)
npm run lint:fix - Auto-fix lint and format issues
npm run dev - Claude Code session with the plugin loaded from this checkout
node scripts/cli.js --help - CLI help

Setup

npm install

Python 3 with pytest is required for npm run test:skills:

pip install pytest pyyaml

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.

2d ago First seen · 31 lines · 316 tokens per session scan A 276cee1deeb3

Subscribe to this mod's changes

arcforge CLAUDE.md is an instructions file published in the GitHub repository GregoryHo/arcforge (8 stars, last pushed 14d ago), licensed MIT. It adds 316 tokens to every session, about $0.0013 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 2026-11-07.

Building agents Testing

arcforge CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
arcforge CLAUDE.mdGregoryHo/arcforge	Instructions file	8	14d ago	MIT	A	316	Claude Code
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

arcforge: Instructions file for Claude Code