catpilot-guardrails

catpilot-guardrails is a plugin for Claude Code from catpilotai/catpilot-ai-guardrails. Its manifest loads nothing; the 19 skills it bundles cost 1,592 tokens per session together, scanned A, original, MIT.

A security-skills plugin with plain-language checkpoints for people building with an AI assistant and engineering guidance for coding agents.

In plain words
What is it for?
Use it for safer AI-assisted building and security-focused agent guidance.
Why use it?
It gives security advice without hooks, tool servers, or telemetry running in the background.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it for safer AI-assisted building and security-focused agent guidance.

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Install in Claude Code
/plugin marketplace add catpilotai/catpilot-ai-guardrails
/plugin install catpilot-guardrails
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/catpilotai/catpilot-ai-guardrails

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 catpilot-guardrails

README.md
[![agentmods](https://agentmods.dev/badge/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails/github.svg)](https://agentmods.dev/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails)
Your own site
<a href="https://agentmods.dev/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails"><img src="https://agentmods.dev/badge/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails/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 catpilot-guardrails

Your own site · 80×15
<a href="https://agentmods.dev/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails"><img src="https://agentmods.dev/badge/plugins/catpilotai/catpilot-ai-guardrails/catpilot-ai-guardrails.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 The manifest loads nothing itself; its 19 skills cost 1,592 tokens a session between them.
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

catpilot-guardrails 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 today.

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-plugin/plugin.json · 12 lines

What it actually says

{
  "name": "catpilot-guardrails",
  "displayName": "Catpilot Security Skills",
  "version": "2026.09.18",
  "description": "Two security skills in the Agent Skills format: catpilot-safe-building, eight plain-language checkpoints for a person building with an AI assistant, and catpilot-security-core, nine engineering components for coding agents. Advice the model reads. This plugin carries no hooks, no MCP servers, and no telemetry.",
  "author": { "name": "Catpilot", "url": "https://catpilot.ai" },
  "homepage": "https://github.com/catpilotai/catpilot-ai-guardrails",
  "repository": "https://github.com/catpilotai/catpilot-ai-guardrails",
  "license": "MIT",
  "keywords": ["security", "guardrails", "safe-building", "skills"]
}
Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. today First seen · 12 lines scan A d7f5b9645067

Subscribe to this mod's changes

catpilot-guardrails is a plugin published in the GitHub repository catpilotai/catpilot-ai-guardrails (2 stars, last pushed today), 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 2026-09-21.