holster

holster is a plugin for Claude Code from nauta-ai/holster. Its manifest loads nothing; the 1 skill it bundles cost 54 tokens per session together, scanned A, original, MIT.

A local security check for repositories that may be given to an AI agent, committed, or shared. It looks for exposed API keys, MCP servers that run unpinned code, and credential files missing from .gitignore; MCP servers are extensions that let an agent use outside tools.

In plain words
What is it for?
It helps decide whether a repository is safe to run with an AI agent and safe to commit or share.
Why use it?
It helps catch secrets and risky agent configuration before they leave the developer's machine or enter version control. The repository is checked locally rather than uploaded.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It helps decide whether a repository is safe to run with an AI agent and safe to commit or share.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add nauta-ai/holster
/plugin install holster
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/nauta-ai/holster

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 holster

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

Your own site · 80×15
<a href="https://agentmods.dev/plugins/nauta-ai/holster/holster"><img src="https://agentmods.dev/badge/plugins/nauta-ai/holster/holster.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 1 skill cost 54 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

holster 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 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.

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/holster/.claude-plugin/plugin.json · 12 lines

What it actually says

{
  "name": "holster",
  "description": "Preflight security for AI-agent development. Run `holster guard .` to get a RUN verdict and a SHARE verdict on a repo before you hand it to an AI agent, commit it, or share it — catches live API keys, MCP servers that run unpinned code, and credential files missing from .gitignore. Local-first; the repo never leaves your machine. Not a password manager.",
  "version": "0.1.0",
  "mcpServers": {
    "holster": {
      "command": "uvx",
      "args": ["holster-mcp"]
    }
  }
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 54 tokens a session between 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. 2mo ago First seen · 12 lines scan A 4f9f2c491487

Subscribe to this mod's changes

holster is a plugin published in the GitHub repository nauta-ai/holster (0 stars, last pushed 5mo 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.

Related

holster compared with plugins from other repositories

holster next to 6 plugins from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
holsternauta-ai/holsterPlugin05mo agoMITA—Claude Code
pad marketplacePerpetualSoftware/padPlugin203yesterdayApache-2.0A—Claude Code
padPerpetualSoftware/padPlugin203yesterdayApache-2.0A—Claude Code
paparatsIBazylchuk/paparats-mcpPlugin343d agoMITA—Claude Code, Cursor
paparatsIBazylchuk/paparats-mcpPlugin343d agoMITA—Cursor
paparatsIBazylchuk/paparats-mcpPlugin343d agoMITA—Gemini CLI
liansLians-ai/LiansPlugin176d agoApache-2.0A—Claude Code