What is hurlicane CLAUDE.md?

A setup and operating guide for the Hurlicane project, including required tools such as Node.js, tmux, Claude Code, and C++ build tools. It also lists the commands for installing dependencies, checking the setup, and starting the project.

Setting up Hurlicane, checking its development environment, installing dependencies, and running its local server.

It gives contributors a repeatable way to prepare the project and avoid missing prerequisites.

How lightsparkdev/hurlicane configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to lightsparkdev/hurlicane. 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/lightsparkdev/hurlicane/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/lightsparkdev/hurlicane

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/lightsparkdev/hurlicane/claude-md/github.svg)](https://agentmods.dev/instructions/lightsparkdev/hurlicane/claude-md)

Your own site

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

Per session 725 This file is loaded in full into every session.

When invoked 725 The same file — it is already loaded in full.

Security scan B 1 finding. 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	$0.00725	$0.00725
Opus 5.5	$0.00290	$0.00290
Sonnet 5.5	$0.00145	$0.00145
Haiku 4.5	$0.00072	$0.00072

Measured 2mo ago against content hash b9492e0927a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

hurlicane CLAUDE.md scanned grade B with 1 finding 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 2mo 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo apt install tmux

CLAUDE.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Orchestrator

Setup

When asked to set up or install this project, run the following steps in order. Check each prerequisite and install if missing, then install npm dependencies.

1. Check Node.js (requires ≥ 22)

node --version

If not installed or too old, install via nvm or directly from nodejs.org:

# macOS with Homebrew
brew install node

2. Check tmux

which tmux || echo "MISSING: tmux not found"

Install if missing:

# macOS
brew install tmux
# Ubuntu/Debian
sudo apt install tmux

3. Check C++ build tools (required for node-pty)

# macOS
xcode-select -p || xcode-select --install
# Ubuntu/Debian
which make || sudo apt install build-essential python3

4. Check Claude Code CLI

which claude || echo "MISSING: claude not found"

Install if missing:

npm install -g @anthropic-ai/claude-code

5. Install npm dependencies

npm install

6. Verify setup

node --version   # should be ≥ 22
which tmux
which claude
ls node_modules | head -5

If everything looks good, start the server with:

npm run dev

Then open http://localhost:3000.

Dev Commands

npm run dev — start server (port 3000) + Vite dev server concurrently, both with hot reload
npm run build — compile TypeScript and bundle client for production
npm run server:start — run production build

Architecture

Server: Express + Socket.io on :3000; MCP SSE server on :3001
Client: React 18 + Vite
Database: SQLite via node:sqlite experimental (auto-created at data/orchestrator.db)
Agents: spawned as claude --print --output-format stream-json --verbose subprocesses

File Locking

A PreToolUse hook (scripts/check-lock-hook.mjs) blocks Edit/Write tool calls unless the agent holds a DB lock for that file. This applies to all Claude Code sessions running in this directory, including interactive ones.

Read the full file on GitHub · 114 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.

2mo ago First seen · 114 lines · 725 tokens per session scan B b9492e0927a8

Subscribe to this mod's changes

hurlicane CLAUDE.md is an instructions file published in the GitHub repository lightsparkdev/hurlicane (18 stars, last pushed 10d ago), licensed Apache-2.0. It adds 725 tokens to every session, about $0.0029 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-01.

Project management

hurlicane CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
hurlicane CLAUDE.mdlightsparkdev/hurlicane	Instructions file	18	10d ago	Apache-2.0	B	725	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

hurlicane: Instructions file for Claude Code