Cyber criminals don’t need fancy exploits anymore. They use stolen credentials from data breaches to waltz right into your users’ accounts.
One compromised email. That’s all it takes. Account takeover. Ransomware. Financial fraud. Your reputation in the trash.
Here’s the thing: those breached credentials?
They’re already out there. Sitting in databases.
Waiting for someone to use them against you.
What if you could catch them before the damage starts?
XposedOrNot’s MCP integration gives you a real-time digital risk alerting system. It detects stolen credentials and helps you block cyber criminals before they breach your systems.
No context switching. No breaking your flow.
Just instant breach intelligence right where you code.
Prevent Account Takeovers. Keep Frauds Out.
Account takeovers happen in three steps:
1. Attacker gets breached credentials from the dark web
2. They try those credentials on your login page
3. If the user recycled their password? Game over.
XposedOrNot helps you break that chain. When someone signs up or logs in, you can quickly know if their email or credentials have been compromised. Then you can:
– Force a password reset for breached accounts
– Require multi-factor authentication
– Flag high-risk users for additional verification
– Block suspicious login attempts before they succeed
It’s not about keeping your app secure. It’s about keeping fraudsters out and minimizing the risk of account takeovers before they start.
What's XposedOrNot?
Think of it as an early warning system for stolen credentials. It monitors billions of breached records and tells you if an email has been compromised.
When you check an email, XposedOrNot searches through known data breaches and tells you exactly what it finds. Which breaches. When they happened. What data was exposed?
No guesswork. Just facts. So you can make smart security decisions.
It’s completely free and open-source. Everyone is welcome to contribute as well.
The MCP Bridge
MCP stands for Model Context Protocol. It’s the bridge that connects your AI coding assistant to external tools.
Before MCP, your AI lived in a bubble. It could write code, but couldn’t check APIs or fetch real-time data. MCP changes that.
Think of it like giving your AI assistant hands that can reach outside your editor.
Now it can query breach databases, pull analytics, and grab security reports while you keep coding.
No tab switching. No copy-paste. No breaking flow.
Why This Matters for Developers
You stay in flow. That’s huge.
Flow state is when you’re crushing code and everything clicks. But every time you switch contexts, you lose it. Studies show it takes about 23 minutes to get back into deep focus after an interruption.
MCP keeps you in your editor. Your AI handles the breach checks. You keep building.
You enforce security without friction. Users hate extra steps. But when you know their email is compromised, you can require stronger auth only for high-risk accounts. Everyone else? Smooth sailing.
You catch threats early. A user signs up with a breached email? You know instantly. You can prompt them to use a unique password or enable 2FA before they even finish onboarding.
Three Tools For You
XposedOrNot’s MCP gives you three security tools:
1. Email Breach Check
The frontline defender. Feed it an email and get instant breach status.
Use this during user registration or login. If the email is compromised, trigger additional security measures.
Example in Cursor:
You: "Check if john.doe@example.com has been in any breaches"
AI: "Based on the XposedOrNot analysis, here's the breach summary for john.doe@example.com:
🚨 Breach Status
Total Breaches: 28 breaches detected
Status: HIGH RISK - This email has been compromised in numerous data breaches"
2. Breach Analytics
The risk assessor. Get detailed stats about exposed breaches affecting emails.
Perfect for security audits and understanding your organization’s exposure.
Example in Windsurf:
You: "Give me analytics for all test@example.co"
AI: "Analytics for test@example.co
🎯 Overall Risk Assessment
Risk Level: Medium
Risk Score: 57/100
Total Breaches: 3 breaches detected
📊 Breach Timeline Analysis
2018: 6 breach incidents (100% of all breaches)
2007-2017, 2019-2025: No breaches detected
All activity concentrated in 2018
🏭 Industry Distribution
Entertainment: 1 breach (500px)
Health Care: 1 breach (MyFitnessPal)
Miscellaneous: 1 breach (Pemiblanc)
Other Industries: 0 breaches (22 industries with no exposure)
🔐 Password Security Analysis
Easy to Crack: 1 breach (MyFitnessPal)
Plain Text: 1 breach (Pemiblanc)
Strong Hash: 1 breach (500px)
Unknown: 0 breaches
📋 Data Exposure Categories
📞 Communication and Social Interactions
Email addresses: 1 category exposed
🔒 Security Practices
Passwords: 1 category exposed
👤 Personal Identification
Names: 1 category exposed
Genders: 1 category exposed
Usernames: 1 category exposed
👥 Demographics
Dates of birth: 1 category exposed
Geographic locations: 1 category exposed
🖥️ Device and Network Information
IP addresses: 1 category exposed
3. Breach Listings
The intelligence gatherer. Browse all known breaches, filter by domain or breach ID.
Great for compliance reports and staying ahead of emerging threats.
Example in Claude Desktop:
Setting Up in Cursor (Takes 3 Minutes)
You: "Show me all breaches from 2024 affecting entertainment industry"
AI: "Summary
Total Entertainment Industry Breaches in 2024: 9 breaches
Total Records Exposed: 127,048,214 records
Most Affected: 1Win (96.4M records) and Ticketek (17.7M records)
The entertainment industry saw significant breaches in 2024, with gaming platforms, streaming services, and ticketing companies being the primary targets. The largest breach was 1Win with nearly 96.4 million records exposed, followed by Ticketek with 17.7 million records.
I've successfully retrieved and filtered all breaches from 2024 affecting the entertainment industry. The data shows 9 significant breaches with a total of over 127 million records exposed, with gaming platforms, streaming services, and ticketing companies being the most affected sectors."
Step 1: Open Cursor settings
Hit `Cmd+,` (Mac) or `Ctrl+,` (Windows)
Step 2: Find MCP configuration
Look for “MCP Servers” in the settings panel
Step 3: Add XposedOrNot MCP
"xon-api": {
"type": "sse",
"url": "https://api.xposedornot.com/mcp"
}
Step 4: Restart Cursor
Close and reopen. That’s it.
Step 5: Test it
Ask your AI: "Check if test@example.com has been breached"
AI: "This email has been found in 147 different data breaches
Summary
The email test@example.com has been compromised in a significant number of breaches, indicating it's likely a test email that has been used across multiple platforms and services. This is concerning as it suggests the email has been widely exposed.
Key Breaches Include:
Major Platforms: Yahoo, LinkedIn, Twitter, Dropbox, Adobe, Tumblr, VK
Gaming Services: Roblox, Zynga, OMGPOP, Heroes of Newerth
E-commerce: LazadaRedmart, StockX, Teespring, Poshmark
Financial/Crypto: Coinmama, BitcoinTalk, BTC-E, Ledger, Gemini
Entertainment: Funimation, Dailymotion, Wattpad, 8tracks
Recent Breaches: Zacks-2024, Naz.API"
Setting Up in Windsurf
Windsurf works almost identically to Cursor.
Quick setup:
1. Open Windsurf settings (`Cmd+,` or `Ctrl+,`)
2. Navigate to MCP Servers section
3. Add the same JSON config from above
4. Restart Windsurf
5. Test with a simple breach check
The beauty? Once configured, it just works. No maintenance needed.
Real Ways People Use This
Startup founders
“When users sign up, I check their email for breaches. If found, I require 2FA before they can access sensitive features. Cut down account takeover attempts by 87%.”
Freelance developers
“Client’s platform got hit with credential stuffing attacks. I integrated XposedOrNot and flagged 340 compromised accounts. They reset passwords and enabled 2FA. Attacks stopped.”
Security teams
“We monitor our company domain weekly. The breach listing tool shows us if our employees’ emails appear in new breaches. We force password resets within 24 hours.”
Indie hackers
“Added breach checking to my SaaS signup flow. If someone’s email is breached, they get a gentle nudge to use a password manager. Improved security posture without annoying users.”
The Tech Stuff (Simplified)
MCP runs on JSON-RPC 2.0. It’s a standard way for programs to talk to each other.
When you ask your AI to check an email:
1. AI sends request to MCP server
2. MCP server calls XposedOrNot API
3. API checks billions of breached records
4. Results flow back to your AI
5. AI formats it nicely for you
The whole trip? Usually under a second.
Security-wise, MCP supports OAuth. That means no API keys floating around your config files. Authentication happens securely in the background.
Tips for Getting the Most Out of It
Batch your checks. Instead of checking emails one by one, give your AI a list. It’s faster.
Set up shortcuts. In Cursor or Windsurf, create custom commands like `/breach-check` for speed.
Use natural language. Don’t overthink queries. “Check these emails for breaches” works just as well as formal syntax.
Combine with other tools. Use breach data to trigger other workflows. Failed breach check? Require 2FA. Send security alert emails. Log risk events.
Monitor regularly. New breaches happen weekly. Run periodic audits on your user database to catch newly exposed credentials.
Common Questions
Q: Does this slow down my editor?
Nope. MCP runs in the background. You won’t notice any lag.
Q: Do I need to pay for XposedOrNot?
It’s completely free. The MCP server is open-source too.
Q: What if I hit rate limits?
The free tier is generous. If you need more, XposedOrNot has paid plans with higher limits.
Q: Can I use this in production apps?
Absolutely. Just respect rate limits and implement proper error handling.
Q: Does it work with other AI assistants?
Any tool supporting MCP works. That includes Cursor, Windsurf, Claude, and more coming soon.
Q: How often should I check user emails?
Check during registration and login. Run batch audits monthly to catch new breaches.
The Bigger Picture
Account takeovers cost businesses billions every year. Ransomware attacks start with stolen credentials.
Traditional solutions are reactive. They detect breaches after they happen. By then, the damage is done.
XposedOrNot flips the script. You catch compromised credentials before attackers use them. You enforce strict authentication where it matters. You keep frauds out of your system.
And with MCP, it all happens without leaving your code editor. No expensive security tools. No complex integrations. Just conversations with your AI assistant.
Your First Security Check
1. Set up MCP in your editor of choice (3 minutes)
2. Ask your AI: “Check if myemail@example.com has been breached”
3. Try a batch check with 5 emails
4. Pull analytics for reference
5. List all breaches from the last year
By the time you finish, you’ll understand how to block account takeovers before they start.
Why This Matters for Your Projects
Every app has users. Every user is a potential target.
Attackers don’t target your infrastructure anymore. They target your users with stolen credentials. Because it’s easier.
Traditional security audits are expensive. They require specialists. They take time. For small teams and solo developers, that’s often out of reach.
MCP democratizes threat prevention. Now anyone can check for breached credentials, assess risk, and enforce strict authentication. Right from their code editor. For free.
That’s game-changing.
Looking Ahead
MCP is barely a year old. The ecosystem is just getting started.
More integrations are coming. More AI assistants will support it. More developers will build security into their workflow.
XposedOrNot plans to add more MCP tools too. Password strength checking. Phishing URL scanning. Domain monitoring. All accessible through natural conversation with your AI.
The future of coding is conversational. You describe what you need. AI figures out how to do it. MCP makes that possible.
Stop Threats Before They Start
Account takeovers don’t have to be inevitable. Ransomware attacks don’t have to succeed.
With XposedOrNot‘s MCP integration, you get a real-time digital risk alerting system. You detect stolen credentials. You enforce strict authentication. You block cybercriminals before they breach your systems.
All without breaking your flow.
Ready to get started?
1. Pick your editor: Cursor, Windsurf, or Claude Desktop
2. Add the MCP configuration (scroll up for instructions)
3. Restart your editor
4. Run your first breach check
That’s it. You’re now preventing account takeovers before they happen.
Want to dive deeper?
– [MCP Protocol Specs](https://modelcontextprotocol.io/)
– [GitHub Repository](https://github.com/xposedornot)
Questions or feedback?
The XposedOrNot community is active and helpful. Jump in and ask anything.
