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VARIANT 1 (recommended — casual, like the example)
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Title: Made a runtime firewall for OpenClaw — blocks dangerous commands before they run

Hey everyone! Just wanted to share a tool I've been building for the past few weeks, called PolicyShield.

Basically, I got a bit paranoid about what my OpenClaw agent was doing with shell commands. Like, it can literally run `rm -rf /` or `curl something | bash` and the only thing stopping it is the LLM being "polite." That didn't feel great.

So I made PolicyShield — it sits between the agent and the tools and checks every call against YAML rules before it executes.

Setup is pretty simple:

    pip install policyshield[server]
    policyshield openclaw setup

That's it, 11 security rules kick in automatically. It blocks destructive commands, redacts PII from file writes, and can require your approval for sensitive stuff (like writing to .env).

The cool part — to prove it actually works and it's not just the LLM refusing on its own, I made demo rules that block completely harmless commands like `cat` and `ls`. You ask the agent to run `cat /etc/hosts`, it refuses. No LLM would refuse that on its own, so you know the firewall is doing its job.

It also has a kill switch if something goes wrong — one command and everything stops.

Open source, MIT license: https://github.com/mishabar410/PolicyShield

Don't hesitate to tell me if you have issues or ideas. Would love feedback from the community!


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VARIANT 2 (shorter, more direct)
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Title: I made a security layer for OpenClaw — checks every tool call before it runs

Hey! Sharing a tool I built — PolicyShield. It's basically a firewall for your OpenClaw agent.

The problem: your agent can run any shell command, write to any file, and the only safeguard is the LLM deciding not to do something dumb. I wanted something more reliable.

PolicyShield checks every tool call against YAML rules before execution. You install it with:

    pip install policyshield[server]
    policyshield openclaw setup

Two commands and you get 11 rules out of the box — blocks `rm -rf`, `curl | sh`, redacts PII, rate limits exec calls. There's also a kill switch for emergencies.

You can even prove it works: I ship demo rules that block `cat /etc/hosts` — a completely harmless command no LLM would refuse. With PolicyShield, it gets blocked. That's the proof.

Let me know if you have any questions or ideas!


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VARIANT 3 (question-first, discussion starter)
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Title: How is everyone handling security with their OpenClaw agent?

Hey all! Genuine question — does anyone else get nervous when their agent runs shell commands?

I've been using OpenClaw daily and it's great, but I kept thinking about what happens when the LLM hallucinates a destructive command. Like `rm -rf` or writing over your `.env`. The LLM's "alignment" is the only thing between your agent and your files.

So I built a little tool called PolicyShield — it intercepts every tool call and checks it against YAML rules before the tool runs. Pretty simple concept but it gives me peace of mind.

    pip install policyshield[server]
    policyshield openclaw setup

11 rules by default. Blocks dangerous commands, redacts PII, requires approval for sensitive file writes. There's a kill switch too.

MIT, open source: https://github.com/mishabar410/PolicyShield

Curious what others are doing about this. Or am I the only one worried? lol
