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Alternatives

Products that do what Wardstone does

Guard your AI from prompt attacks, harmful content, and PII

  1. 1

    Protect your LLM applications with a few lines of code.

    2023

  2. 2

    Test your LLM powered APIs & AI agents

    2024

  3. 3AM

    I built this out of curiosity about what Claude Code was actually sending to the API. Turns out, watching your tokens tick up in real-time is oddly satisfying. Sherlock sits between your LLM tools and the API, showing you every request with a live dashboard, and auto-saved copies of every prompt as markdown and json.

    Jan 2026 · github.com

  4. 4

    Axios / LiteLLM hacks behavioral detector app for Mac/PC

    Apr 2026 · edamame.tech

  5. 5
    MaskLLM132

    Mask your LLM APIs for secure rotation and logging

    2025

  6. 6

    AI detects & stops sensitive-data leaks in APIs & apps.

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  7. 7IM
  8. 8

    Stop leaking secrets to LLMs — local-first AI redaction

    Jan 2026

  9. 9
    VizPy27

    Turn prompt failures into executable rules — for AI agents

    Mar 2026

  10. 10

    A sandbox for LLM inputs

    Apr 2026 · llmsecure.io

  11. 11AR
  12. 12LT

    Current AI-assisted CLI tools are often part of larger systems and work better on Linux. I built llm-term to address these. It's a Rust-based tool that compiles into a single binary file. You only need to download the binary, add it to your PATH, and configure your OpenAI key to get started. While llm-term offers an option for gpt-4o, it works great with gpt-4o-mini. So it's not costly. I appreciate any feedback or suggestions.

    2024 · github.com

  13. 13AM

    I made an open source, MIT license Typescript library based on some of the latest research that generates prompt injection attacks. It is a super minimal/lightweight and designed to be super easy to use. Keen to hear your thoughts and please be responsible and only pen test systems where you have permission to pen test!

    2025 · prompt-injector.blueprintlab.io

  14. 14AR

    Hi HN, I built this open-source LLM red teaming tool based on my experience scaling LLMs at a big co to millions of users... and seeing all the bad things people did. How it works: - Uses an unaligned model to create toxic inputs - Runs these inputs through your app using different techniques: raw, prompt injection, and a chain-of-thought jailbreak that tries to re-frame the request to trick the LLM. - Probes a bunch of other failure cases (e.g. will your customer support bot recommend a competitor? Does it think it can process a refund when it can't? Will it leak your user's address?) -…

    2024 · promptfoo.dev

  15. 15

    Prompt-injection firewall for prod LLM apps

    Jul 2026 · insightits.com

  16. 16OS

    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

  17. 17

    Stop prompt injection attacks before they reach your LLM

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  18. 18
    GitHub2

    Local sensitive data & API key blocker for ChatGPT.

    Jun 2026 · github.com

  19. 19

    The AI firewall that understands compliance context

    Dec 2025

  20. 20

    "Your LLM's last line of defence against the internet."

    May 2026 · wonderwallai.skintlabs.ai

  21. 21

    Protect PII and sensitive information in any web app

    Apr 2026 · lockisecurity.com

  22. 22

    Stop PII from leaking to LLMs—one API call

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  23. 23

    AI Security, Without the Hallucinations

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  24. 24

    Take control of your API Infrastructure

    Jun 2026 · onlyallow.ai

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