Alternatives

Products that do what ModernGuard: LLM guardrail API does

Fast and adaptive security guardrail for AI agents

1. 1
   ElevenAgents Guardrails 2.0▲132

   Configurable safety control for enterprise agent deployment.

   Apr 2026 · elevenlabs.io

2. 2
   CtrlAI▲104

   Transparent proxy that secures AI agents with guardrails

   Mar 2026 · github.com

3. 3
   Lakera Guard▲131

   Protect your LLM applications with a few lines of code.

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4. 4
   Trueguard▲368

   Stop fake user signups

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5. 5
   GuardRails▲66

   Continuous security feedback for your repositories.

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6. 6
   Benguard.io▲3

   Beyond Scanners: Real Security for LLM Apps

   Dec 2025 · benguard.io

7. 7
   HOL Guard▲106

   The 1st Firewall for AI Agents

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8. 8FL
   Free local security checks for AI coding in VSCode, Cursor and Windsurf▲43

   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%…

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9. 9
   Guardrail by NeatProxy▲13

   Full visibility into your AI spend, before it goes rogue

   26d ago · neatproxy.com

10. 10
    BodAIGuard▲3

    Universal AI agent guardrail. The bodyguard for AI agents.

    Feb 2026 · github.com

11. 11
    Theseus Guard▲3

    The World's First Stateful AI Governance Platform

    29d ago · theseusguard.com

12. 12
    PromptGuard▲3

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

    Dec 2025 · promptguard.co

13. 13
    NeoGuard▲13

    Detect & trace sensitive data with precision

    2025

14. 14
    Guard▲13

    AI-powered cloud security, simplified

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15. 15
    BeyondGuard▲2

    AI security and governance platform, adopting generative AI

    Dec 2025 · beyondguard.ai

16. 16
    ICME API▲3

    Cryptographic guardrails for AI Agents

    Mar 2026 · docs.icme.io

17. 17
    Insight IT Solutions PrismGuard ▲5

    Prompt-injection firewall for prod LLM apps

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18. 18
    wispbit▲16

    Guardrails for AI-generated code

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19. 19
    Defend▲2

    Open-source guardrails for LLM apps

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20. 20
    GuardrailX▲3

    AI guardrails and governance for production GenAI

    Feb 2026 · guardrailx.org

21. 21AO
    An open-source AI Gateway with integrated guardrails▲21

    Hi HN, I've been developing Portkey Gateway, an open-source AI gateway that's now processing billions of tokens daily across 200+ LLMs. Today, we're launching a significant update: integrated Guardrails at the gateway level. Key technical features: 1. Guardrails as middleware: We've implemented a hooks architecture that allows guardrails to act as middleware in the request/response flow. This enables real-time LLM output evaluation and transformation. 2. Flexible orchestration: The gateway can now route requests based on guardrail verdicts. This allows for complex logic like fallbacks…

    2024 · github.com

22. 22
    GitHub▲2

    Local sensitive data & API key blocker for ChatGPT.

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23. 23
    FraudGuard.io▲10

    Advanced ip reputation & threat intelligence solutions

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24. 24
    PrismGuard▲4

    Self-hosted LLM guard — auditable blocks, not scores

    Jul 2026 · insightits.com

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