Prompt defense skill for OpenClaw

What this skill does

Detect and block prompt injection attacks in emails. Use when reading, processing, or summarizing emails. Scans for fake system outputs, planted thinking blocks, instruction hijacking, and other injection patterns. Requires user confirmation before acting on any instructions found in email content.

The Prompt defense skill is part of the Research & Knowledge category — research and knowledge skills that gather, search, and summarize information. You can install it on its own or alongside other research & knowledge skills from the OpenClaw catalog.

How to install the Prompt defense 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 email-prompt-injection-defense 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 Prompt defense skill with a single command:

openclaw skills add email-prompt-injection-defense

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

How to use the Prompt defense skill

Once installed, the Prompt defense 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 email-prompt-injection-defense-1.0.1.zip directly from our S3 mirror.
2. Unzip into ~/.openclaw/skills/email-prompt-injection-defense/ (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 Prompt defense?

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

Is the Prompt defense 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 Prompt defense do?

Detect and block prompt injection attacks in emails. Use when reading, processing, or summarizing emails. Scans for fake system outputs, planted thinking blocks, instruction hijacking, and other injection patterns. Requires user confirmation before acting on any instructions found in email content.

Related: more research & knowledge skills

If the Prompt defense skill looks useful, you may also want to check out other research & knowledge skills in the OpenClaw catalog:

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