warden-invariants

warden-invariants is a plugin for Claude Code from guerlain-hitier/claude-warden. Its token cost is not measured, scanned A, original, MIT.

An optional companion plugin for warden that repeats your hard rules in every prompt. It reads one local file through a prompt hook and does not write files.

In plain words
What is it for?
For keeping a fixed set of local rules visible to the agent across prompts and context compaction.
Why use it?
It helps preserve important instructions when a long conversation loses earlier context.

Plugin for Claude Code

Written for Claude Code: UserPromptSubmit hook event.

Good fit For keeping a fixed set of local rules visible to the agent across prompts and context compaction.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add guerlain-hitier/claude-warden/plugin install warden-invariants
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/guerlain-hitier/claude-warden

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.

agentmods badge for warden-invariants

README.md
[![agentmods](https://agentmods.dev/badge/plugins/guerlain-hitier/claude-warden/warden-invariants/github.svg)](https://agentmods.dev/plugins/guerlain-hitier/claude-warden/warden-invariants)
Your own site
<a href="https://agentmods.dev/plugins/guerlain-hitier/claude-warden/warden-invariants"><img src="https://agentmods.dev/badge/plugins/guerlain-hitier/claude-warden/warden-invariants/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.

agentmods 80×15 button for warden-invariants

Your own site · 80×15
<a href="https://agentmods.dev/plugins/guerlain-hitier/claude-warden/warden-invariants"><img src="https://agentmods.dev/badge/plugins/guerlain-hitier/claude-warden/warden-invariants.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
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.
Security

Grade A, and why

warden-invariants 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 9d 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.

plugins/warden-invariants/.claude-plugin/plugin.json · 13 lines

What it actually says

{
  "name": "warden-invariants",
  "description": "Optional companion to warden. Re-injects your hard rules on every prompt so they survive context compaction. Adds a UserPromptSubmit hook that reads one local file and writes nothing.",
  "version": "0.2.0",
  "author": {
    "name": "guerlain-hitier",
    "url": "https://github.com/guerlain-hitier"
  },
  "repository": "https://github.com/guerlain-hitier/claude-warden",
  "license": "MIT",
  "keywords": ["claude-md", "rules", "hooks", "context"]
}
Contents

What it installs

The manifest is a name and a version. 1 hook travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

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. 9d ago First seen · 13 lines scan A 7eaf610f396a

Subscribe to this mod's changes

warden-invariants is a plugin published in the GitHub repository guerlain-hitier/claude-warden (1 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-31.

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