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Alternatives

Products that do what AgentFirewall does

Project AI agents from unsafe actions before they execute.

  1. 1
    HOL Guard106

    The 1st Firewall for AI Agents

    Jul 2026 · hol.org

  2. 2

    Runtime firewall for AI coding agents.

    7d ago · contextfence.dev

  3. 3

    blocks multi-step tool-call chains that leak data

    Jun 2026 · github.com

  4. 4

    The AI-Powered Antivirus for AI Agents

    May 2026

  5. 5
    Kastra335

    Runtime authorization for Claude, Cursor, Codex and OpenClaw

    Jul 2026 · kastra.ai

  6. 6

    A Runtime security layer that lets AI agents execute safely

    Jul 2026 · runwall.vercel.app

  7. 7

    Firewall for AI Agents

    Jun 2026 · verdicter.dev

  8. 8

    AI-powered firewall that instantly blocks malicious Web3.

    Jul 2026 · guardfast.vercel.app

  9. 9SY
  10. 10IB

    Hi HN, I’m the creator of Cordum. I’ve been working in DevOps and infrastructure for years (currently in the fintech/security space), and as I started playing with AI agents, I noticed a scary pattern. Most "safety" mechanisms rely on system prompts ("Please don't do X") or flimsy Python logic inside the agent itself. If we treat agents as autonomous employees, giving them root access and hoping they listen to instructions felt insane to me. I wanted a way to enforce hard constraints that the LLM cannot override, no matter how "jailbroken" it gets. So I built Cordum. It’s an open-source…

    Jan 2026 · github.com

  11. 11

    Real-time governance firewall for autonomous AI agents

    May 2026 · gateplex.ai

  12. 12

    Stop AI agents from installing malicious packages.

    Jul 2026 · agentinel.habitwala.in

  13. 13

    AI firewall for LLM calls, MCP tools, and agentic workflows

    Jul 2026 · argusai-tau.vercel.app

  14. 14

    Block dangerous AI agent actions before execution

    Jul 2026 · relay-security-lemon.vercel.app

  15. 15

    100% stable headless browser kit for AI Agents(Linux, macOS)

    Jun 2026 · github.com

  16. 16

    The AI agent firewall: catches hijacks that pass every rule

    Jul 2026 · agentguard-dusky.vercel.app

  17. 17

    Security between AI and action

    Jun 2026 · akulbanxal.github.io

  18. 18

    The security gateway for AI agents | identity, policy, audit

    Jun 2026 · axiorank.com

  19. 19FO

    Hey HN, We built FireClaw because we kept watching AI agents get owned by prompt injection through web content. The agent fetches a page, the page says "ignore previous instructions," and suddenly your agent is leaking data or running commands it shouldn't. The existing solutions detect injection after the fact. We wanted to prevent it. FireClaw is a security proxy that sits between your AI agent and the web. Every fetch passes through a 4-stage pipeline: 1. DNS blocklist check (URLhaus, PhishTank, community feed) 2. Structural sanitization (strip hidden CSS, zero-width Unicode, encoding…

    Mar 2026 · github.com

  20. 20

    AI agent spend firewall

    25d ago · agentshield.fly.dev

  21. 21

    Stop AI agents from doing things they shouldn't.

    28d ago · sanjaynandanj.github.io

  22. 22

    Check every AI agent action before it runs

    May 2026 · agentwing.gpmai.dev

  23. 23OS

    Hi HN, Matvey, Ildar, Joey, and Dominik here. If you're building LLM agents that use tools, you're probably worried about prompt injection attacks that can hijack those tools. We were too, and found that solutions like prompt-based filtering or secondary "guard" LLMs can be unreliable. Our thesis is that agent security should be handled at the network level between the agent and the LLM, just like a traditional web application firewall. So we built Archestra Platform: an open-source gateway that acts as a secure proxy for your AI agents. It's designed to be a deterministic firewall against…

    Oct 2025 · archestra.ai

  24. 24

    The stealth browser engine for scrapers and AI agents

    Jul 2026 · github.com

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