MCP Security Suite

In plain words

MCP Security Suite is an open-source analyzer that detects security vulnerabilities in Model Context Protocol tools used by developers. It identifies attack patterns that traditional security scanners miss, including hidden Unicode in error messages, malicious tool updates that steal credentials, and tool redefinitions that execute unintended commands. The tool targets developers who use AI assistants with MCP integrations and aims to prevent credential theft and code compromise through automated vulnerability analysis.

written from the facts on this page · September 2026

From the sources

Don't Simply Trust MCP Server Code, Validate and Scan - TryMightyAI/mighty-security

Checks if MCP servers are trying to pwn your machine before you install them. MCP servers can do anything on your computer. Literally anything. We scanned 500+ of them and... yeah, it's bad: We built this after getting burned by a malicious MCP server. You probably don't want to learn the hard way. python3 mighty_mcp.py check https://github.com/some/mcp-server # It tells you exactly what's sketchy: 🚨 CRITICAL: Command injection in tool.py:45 subprocess.run(user_input, shell=True) # <- yikes ⚠️ HIGH: Steals environment variables in handler.py:89 Reads all env vars, sends to external server We catch the obvious stuff - command injection, credential theft, path traversal. Plus the sneaky…from github.com

In the maker’s words, at launch

Hi HN! We kept seeing devs get pwned through MCP tools in ways that security scanners completely miss. So we built an open-source analyzer to catch these attacks. Our first OSS by Mighty team. The problem: At Defcon, we saw MCP exploits with 100% success rate against Claude and Llama. Three attack patterns: Hidden…

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  MCP-Shield – Detect security issues in MCP servers2025 · github.com · ▲134

  I noticed the growing security concerns around MCP (https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43600192) and built an open source tool that can detect several patterns of tool poisoning attacks, exfiltration channels and cross-origin manipulations. MCP-Shield scans your installed servers (Cursor, Claude Desktop, etc.) and shows what each tool is trying to do at the instruction level, beyond just the API surface. It catches hidden instructions that try to read sensitive files, shadow other tools' behavior, or exfiltrate data. Example of what it detects: - Hidden instructions…

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  Secure MCP Framework by Arcade.devNov 2025 · arcade.dev · ▲272

  Skip migration and launch MCP with built-in Auth

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  MCP Defender2025 · mcpdefender.com · ▲152

  Hi HN, MCP Defender is an open source desktop app that automatically proxies your MCP traffic in AI apps like Cursor, Claude, Windsurf and VSCode. It then scans all requests and responses between the apps and the MCP tools they call. If it detects anything malicious, it alerts you and lets you allow or block the tool call. While the threat landscape of MCP is still being actively researched, there are dangerous things that MCP Defender can block today. For example, a developer asks Cursor to fix a Github issue with an attached crash log. However, the Github issue was created by an attacker…

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  MCPGod: Fine-grained control over MCP clients, servers, and tools2025 · github.com · ▲37

  Hey everyone, I've wanted an easy way to control which mcp server tools are available to clients. So for example, I might want a gmail server to only expose the read tool (but not send, delete etc). I figured if I create a cli for spawning mcp servers, I could intercept the stdin, stdout, stderr etc and modify what the clients see when they are making calls to list tools, resources, and prompts. Well it worked! In the initial version you can easily add a server to claude with a safe list of tools: npx -y mcpgod add @modelcontextprotocol&#x2F;server-everything --client claude --tools=echo,add…

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  Vishu - MCP Pentesting Suite2025 · github.com · ▲13

  LLM powered vulnerability scanning and reporting

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  Risk Analysis Database of Every MCP ServerFeb 2026 · mcp.armor1.ai · ▲22

  Hi HN, We’re building security tooling around agentic AI systems. Today, we're releasing our public MCP catalog with detailed risk analysis for every MCP server we've found on the internet: https:&#x2F;&#x2F;mcp.armor1.ai&#x2F;mcp-directory We all love agents and the power that MCPs unlock: suddenly your AI assistant can query databases, manage files, call APIs, and interact with the real world. But when we started adopting MCPs ourselves, we kept running into the same nagging questions: Is this MCP safe? Where is my data actually going? Could it execute destructive actions? Is it…

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  /dev/null▲468

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  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

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  Talanoa▲340

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

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  CoreSpeed▲332

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  Dev tools · 27d ago · corespeed.io

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  Trace▲1,555

  Workflow Automations for the Human 👾 AI Workforce

  AI · 2025 · trace.so

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  I spent 6 years building a ridiculous wooden pixel display▲1,145

  I built the world's most impractical 1000-pixel display and anyone in the world can draw on it. It draws a single pixel at a time and takes 30-60 minutes to complete a single image. Anyone can participate in the project by voting for the next image to be drawn, and submitting images. https:&#x2F;&#x2F;kilopx.com&#x2F;

  Work · 2025 · benholmen.com

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  Indy AI by Contra▲1,070

  Job boards are dead. Your network is alive

  AI · 2025 · contra.com

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  Kitten TTS – 25MB CPU-Only, Open-Source TTS Model▲1,003

  Kitten TTS is an open-source series of tiny and expressive text-to-speech models for on-device applications. We are excited to launch a preview of our smallest model, which is less than 25 MB. This model has 15M parameters. This release supports English text-to-speech applications in eight voices: four male and four female. The model is quantized to int8 + fp16, and it uses onnx for runtime. The model is designed to run literally anywhere eg. raspberry pi, low-end smartphones, wearables, browsers etc. No GPU required! We're releasing this to give early users a sense of the latency and voices…

  AI · 2025 · github.com

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  I was curious about spherical helix, ended up making this visualization▲865

  I was wondering how I can arrange objects along a spherical helix path, and read some articles on it. I ended up learning about parametric equations again, and make this visualization to document what I learned: https:&#x2F;&#x2F;visualrambling.space&#x2F;moving-objects-in-3d&#x2F; feel free to visit and let me know what you think!

  Life & fun · 2025 · visualrambling.space

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  The current sky at your approximate location, as a CSS gradient▲788

  For HTML Day 2025 [1], I made a web service that displays the current sky at your approximate location as a CSS gradient. Colours are simulated on-demand using atmospheric absorption and scattering coefficients. Updates every minute, without the use of client-side JavaScript. Source code and additional information is available on GitHub: https:&#x2F;&#x2F;github.com&#x2F;dnlzro&#x2F;horizon [1] https:&#x2F;&#x2F;html.energy&#x2F;html-day&#x2F;2025&#x2F;index.html

  Dev tools · 2025 · sky.dlazaro.ca