Reef Prompt Guard skill for OpenClaw

What this skill does

Detect and filter prompt injection attacks in untrusted input. Use when processing external content (emails, web scrapes, API inputs, Discord messages, sub-agent outputs) or when building systems that accept user-provided text that will be passed to an LLM. Covers direct injection, jailbreaks, data exfiltration, privilege escalation, and context manipulation.

The Reef Prompt Guard skill is part of the Developer Tools category — developer tools that help your agent write, review, debug, and ship code. You can install it on its own or alongside other developer tools skills from the OpenClaw catalog.

How to install the Reef Prompt Guard skill

The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:

1. Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
2. Open the in-app Skills panel.
3. Search for reef-prompt-guard and click Install.
4. The skill activates automatically when an incoming message matches its description.

Install from the command line

If you already run the OpenClaw CLI, add the Reef Prompt Guard skill with a single command:

openclaw skills add reef-prompt-guard

This pulls reef-prompt-guard from ClawHub and installs it into ~/.openclaw/skills/reef-prompt-guard/. Restart the OpenClaw gateway afterwards so the new skill is discovered.

How to use the Reef Prompt Guard skill

Once installed, the Reef Prompt Guard skill activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.

Manual install (advanced)

If you prefer manual installation:

1. Click the Download skill .zip button above to grab reef-prompt-guard-1.0.0.zip directly from our S3 mirror.
2. Unzip into ~/.openclaw/skills/reef-prompt-guard/ (create the directory if it does not exist).
3. Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.

Frequently asked questions

How do I install Reef Prompt Guard?

Install Reef Prompt Guard in the OpenClaw Easy desktop app by opening the Skills panel, searching for reef-prompt-guard, and clicking Install. From a terminal you can run: openclaw skills add reef-prompt-guard. Either way the skill is placed in ~/.openclaw/skills/reef-prompt-guard/.

Is the Reef Prompt Guard skill free?

Yes. It is free to download and run through ClawHub, with no account or payment required. Each skill is published by its own author under its own licence — see its ClawHub page for the licence and source.

What does Reef Prompt Guard do?

Detect and filter prompt injection attacks in untrusted input. Use when processing external content (emails, web scrapes, API inputs, Discord messages, sub-agent outputs) or when building systems that accept user-provided text that will be passed to an LLM.

Related: more developer tools skills

If the Reef Prompt Guard skill looks useful, you may also want to check out other developer tools skills in the OpenClaw catalog:

• openclaw-reportstudio-community ⬇ 1.9K
• qa-security ⬇ 1.9K
• BRICKS CLI ⬇ 1.9K
• grill-me ⬇ 1.9K
• Queue Task ⬇ 1.9K

Skills in this catalog are community-contributed integrations published on ClawHub and distributed under their own open-source licences. Product and company names, and any third-party service a skill connects to, are trademarks of their respective owners; a listing here does not imply affiliation with, sponsorship by, or endorsement from them. This page does not distribute any third-party application. Rights holders can reach us at hello@openclaw-easy.com.

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