# Prompt Guard (agent skill)

> Prompt Guard is an agent skill (a SKILL.md file) from Orchestra-Research/AI-Research-SKILLs. Meta's 86M prompt injection and jailbreak detector. It works with Claude Code, Codex, Cursor, Gemini CLI and OpenCode and has 13,315 GitHub stars across a repository of 5 listed skills.

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

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Orchestra-Research/AI-Research-SKILLs |
| Skill path | 07-safety-alignment/prompt-guard/SKILL.md |
| Skill name | prompt-guard |
| GitHub stars | 13,315 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 5 |
| Plugin marketplace | ai-research-skills |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, OpenCode |
| Category | Security |
| Last commit | Jun 16, 2026 |

## Add this skill

### Claude Code

```sh
/plugin marketplace add Orchestra-Research/AI-Research-SKILLs
/plugin   # browse ai-research-skills and install the plugin that contains prompt-guard
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/Orchestra-Research/AI-Research-SKILLs.git
cp -r AI-Research-SKILLs/07-safety-alignment/prompt-guard .agents/skills/prompt-guard   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/Orchestra-Research/AI-Research-SKILLs.git
cp -r AI-Research-SKILLs/07-safety-alignment/prompt-guard .cursor/skills/prompt-guard   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/orchestra-research-prompt-guard
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