by wellwelwel
π Lagune is your security copilot as you build, your Blue Team when you audit, whether you're a developer or not.
# Add to your Claude Code skills
git clone https://github.com/wellwelwel/lagunelagune is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by wellwelwel. π Lagune is your security copilot as you build, your Blue Team when you audit, whether you're a developer or not. It has 70 GitHub stars.
lagune's catalog security scan is still queued. You can run an instant dependency and prompt-injection check now with the "Scan for vulnerabilities" button above.
Clone the repository with "git clone https://github.com/wellwelwel/lagune" and add it to your Claude Code skills directory (see the Installation section above).
lagune is primarily written in TypeScript. It is open-source under wellwelwel on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh lagune against similar tools.
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Unlocks once the catalog security scan passes (runs nightly).
The deep catalog scan for this skill is still queued. Run an instant dependency check now instead.
Lagune helps your AI agent make a project more secure. You point it at your code, and the agent figures out what your system actually does, then guides you through the security work that matters for it.
Love Lagune? Give us a β on GitHub!
Lagune adapts to your environment, whether it is a new project or an existing one.
[!TIP]
No API keys are needed, it runs directly through your own agent (Claude, Codex, and more).
For an interactive live view, follow-up, and maintenance, run:
npx -y lagune@latest
It serves a dashboard and opens it in a random port:
node_modules or package.json is needed π¦[!TIP]
- πͺ Use
--portor-pto specify a custom port.- βοΈ Press
Ctrl+Cto stop.
npx -y lagune@latest init
To update Lagune's own files and its commands to their latest versions, run:
npx -y lagune@latest update
[!TIP]
Your charter, the phase artifacts, and any custom specializations stay untouched.
When you clone or fork a project that already has Lagune, run pull to install its files from the manifest:
npx -y lagune@latest pull
[!TIP]
π‘ Think of it as the Lagune equivalent of
npm i,pip install -r requirements.txt, and the like.
Once Lagune is set up in your project, your AI agent unlocks a set of slash commands:
Secure the work as you build it, guided by the charter, with no flow to follow:
| Command | What it does for you |
|---|---|
| /lagune | Enforces security along with your development, on any prompt, at any time |
These five run in order. Each builds on the previous, so following the list top to bottom is all it takes:
| # | Command | What it does for you |
|---|---|---|
| 1 | /lagune.charter | Sets your project's security rules, proposed for you or shaped by what you say |
| 2 | /lagune.detect | Reads your code and maps what your system does and where the risks are |
| 3 | /lagune.plan | Turns what detect found into a defense plan, with a fix for each finding |
| 4 | /lagune.harden | Applies the plan's fixes to your code, safely and one at a time |
| 5 | /lagune.verify | Proves each applied fix holds and closes out the ones that do |
| Command | What it does |
|---|---|
| /lagune.specialize | Specializes Lagune in a new security sub-skill from articles, exploits, or topics |
| /lagune.prove | Turns each detected finding into a runnable proof for responsible disclosure |
[!TIP]
Security is not a cost, it is an investment: what you put in upfront, you save many times over in the incidents you never have ππ»ββοΈ
[!IMPORTANT]
See the full documentation for usage examples and more.
You will need these tools installed on your system:
To details, report a vulnerability, and see the supported versions, see the Security Policy.
π§ Coming Soon.
Partners get an exclusive logo across the repositories and landing pages, plus a spot on a dedicated partners page.
Help my work grow by becoming a partner π
Really thanks to everyone who has supported and keeps supporting my work.
Support my work by becoming a sponsor too β¨
Lagune is under the MIT License. Copyright Β© 2026-present Weslley AraΓΊjo and contributors.
[!IMPORTANT]
Disclaimer
All product names, trademarks, and registered trademarks mentioned are the property of their respective owners and are used for identification purposes only.