Prompt Guard

Q: How do I install the Prompt Guard Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/prompt-guard/SKILL.md and restart Claude Code. Both flows are detailed at https://claudskills.com/install/.

Q: Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

Q: When should I use the Prompt Guard skill?

Use Prompt Guard when your Claude Code task falls under the Security category — specifically in the security misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. 'use Prompt Guard' or describe the task and let Claude pick). Browse related skills at https://claudskills.com/category/security/.

Q: What is a Claude Code skill and how does the Prompt Guard skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Prompt Guard is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: security-misc · Last updated: 2026-05-21

Meta's 86M prompt injection and jailbreak detector. Filters malicious prompts and third-party data for LLM apps. 99%+ TPR, <1% FPR. Fast (<2ms GPU). Multilingual (8 languages). Deploy with HuggingFace or batch processing for RAG security.

About this skill (catalog notes)

Prompt Guard includes worked examples; 12 code blocks for direct copy-paste. The SKILL.md runs to about 1,016 words, in the catalog's typical mid-range.

License: MIT
Original author: Orchestra Research
Indexed lastmod: 2026-05-21
Catalog position: Security · security-misc
Indexed related skills: 10

How Prompt Guard fits the catalog

Prompt Guard sits in the Security category under the security-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Prompt Guard is an 86M parameter classifier that detects prompt injections and jailbreak attempts in LLM applications.

What this skill does

Prompt Guard is a community-contributed Claude Code skill in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/prompt-guard/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Prompt Guard Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/prompt-guard
curl -L https://claudskills.com/skills/prompt-guard/SKILL.md \
  -o ~/.claude/skills/prompt-guard/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/prompt-guard/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/prompt-guard/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\prompt-guard\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Prompt Guard Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/prompt-guard/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Prompt Guard skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Prompt Guard skill?

Use Prompt Guard when your Claude Code task falls under the Security category — specifically in the security misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Prompt Guard" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Prompt Guard skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Prompt Guard is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/meta-llama/llama-cookbook
License: MIT
Author: Orchestra Research

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Orchestra Research. (2026). Prompt Guard [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/prompt-guard/

BibTeX

@misc{prompt-guard-2026,
  author    = {Orchestra Research},
  title     = {Prompt Guard [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/prompt-guard/}
}

Embed this skill

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Badge

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Browse all Security skills → Top 100 skills

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