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Alternatives

Products that do what MCP Guard does

The firewall for AI agents. Block dangerous commands

  1. 1

    Automatically protects Cursor and other AI apps

    2025

  2. 2
    HOL Guard106

    The 1st Firewall for AI Agents

    Jul 2026 · hol.org

  3. 3
    Golf378

    The enterprise firewall for MCP providers

    Nov 2025

  4. 4

    Let AI block distractions for you when you need to lock in

    Jun 2026 · lockinmcp.com

  5. 5

    Firewall for AI agents. Scan before you trust.

    Mar 2026 · aisecurityguard.io

  6. 6

    Runtime firewall for AI coding agents.

    8d ago · contextfence.dev

  7. 7

    Drop-in MCP Security Developers Love and CISOs Trust

    Mar 2026 · permit.io

  8. 8

    Give AI agents access to real-time data across 200+ apps

    May 2026 · apideck.com

  9. 9

    Project AI agents from unsafe actions before they execute.

    27d ago · agentfirewall.launchreadyal.com

  10. 10

    Security firewall for AI agents. Cloudflare for MCP.

    Feb 2026 · agent-wall.github.io

  11. 11
    CtrlAI104

    Transparent proxy that secures AI agents with guardrails

    Mar 2026 · github.com

  12. 12MS

    I noticed the growing security concerns around MCP (https://news.ycombinator.com/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…

    2025 · github.com

  13. 13
    FireWally156

    A free Mac firewall powered by Apple Intelligence

    Dec 2025

  14. 14CP

    At Deno we've been using OpenClaw and other agents increasingly for addressing production problems in Deno Deploy - when a PagerDuty alert fires, the agent starts researching the cause and making fixes. In order to do this, the agent needs access to real production systems - postgres, kubernetes, gcp, clickhouse, github, etc. But this is dangerous to say the least - we want destructive actions to be reviewed by other LLMs, approved by humans, and logged appropriately. Claw Patrol terminates TCP connections over WireGuard or Tailscale, then parses application protocols (eg http, postgres,…

    Jun 2026 · github.com

  15. 15

    Configurable safety control for enterprise agent deployment.

    Apr 2026 · elevenlabs.io

  16. 16

    Connect your AI Agent to 400+ business systems in minutes

    Oct 2025

  17. 17MF

    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/server-everything --client claude --tools=echo,add…

    2025 · github.com

  18. 18MS
  19. 19

    The firewall for AI prompts. Drop-in security for LLM apps.

    Dec 2025

  20. 20

    Stop prompt injection from triggering tools.

    Feb 2026

  21. 21RA

    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://mcp.armor1.ai/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…

    Feb 2026 · mcp.armor1.ai

  22. 22FL

    Hi HN! We just launched Codacy Guardrails, an IDE extension with a CLI for code analysis and MCP server that enforces security & quality rules on AI-generated code in real-time. It hooks into AI coding assistants (like VS Code Agent Mode, Cursor, Windsurf), silently scanning and fixing AI-suggested code that has vulnerabilities or violates your coding standards, while the code it’s being generated. We built this because coding agents can be a double-edged sword. They do boost productivity, but can easily introduce insecure or non-compliant code. One recent research team at NYU found that 40%…

    2025

  23. 23AA

    Background: I've been working on agentic guardrails because agents act in expensive/terrible ways and something needs to be able to say "Maybe don't do that" to the agents, but guardrails are almost impossible to enforce with the current way things are built. Context: We keep running into so many problems/limitations today with MCP. It was created so that agents have context on how to act in the world, it wasn't designed to become THE standard rails for agentic behavior. We keep tacking things on to it trying to improve it, but it needs to die a SOAP death so REST can rise in it's…

    Mar 2026 · github.com

  24. 24

    Firewall for AI Agents

    Jun 2026 · verdicter.dev

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