nowfound

AI · April 7, 2026

DKnownAI Guard

AI Agent Security — Prevent Deception, Protect Execution

DKnownAI Guard launched on April 7, 2026.

What it does

Building AI agents? Traditional content filters don't understand the difference between a prompt injection attack and a direct admin command. DKnownAI Guard does. It detects deceptive tactics (jailbreak, prompt injection) separately from direct high-risk requests — so your agent can block hackers while still executing legitimate commands with proper permissions. One API call. Four risk levels. Multi-turn context tracking. Free tier available.

DKnownAI Guard is an AI agent security API for prompt injection detection, jailbreak defense, system prompt protection, and four-level risk classification.

DKnownAI Guard is a security API built for agentic AI. We detect manipulation, separate operational and content-related risk, and keep useful agent behavior intact when requests are legitimate. We block the deceivers, you decide the rest. Traditional content moderation focuses on whether text itself is harmful. DKnownAI Guard focuses first on whether someone is trying to manipulate the agent, so you can block hijacking attempts without breaking legitimate workflows. Built for AI agents that execute code, access files, call tools, and interact with real systems. DKnownAI Guard detects manipulation, separates operational and content-related risk, and helps you respond with precision. Block…from dknownai.com

Does a similar job

all alternatives →
  • Tired of duct-taping access control into agent prompts. Here's the fixJun 2026 · github.com · ▲22

    Your agent team, on your machine. Open-source harness for multi-user Claude agents. - yaodub/cast

  • PromptGuardDec 2025 · promptguard.co · ▲3

    Every other gateway is detect-and-block. You don't get a security grade. You don't get red team in CI. We built the one that does. PromptGuard is a proxy: change your base URL (one line with our SDK, or a few lines without), and every request gets checked for prompt injection, PII leaks, jailbreaks, and abuse. 20+ threat vectors, 39+ PII types. We also ship a red team suite and an autonomous agent that mutates attacks to find bypasses - you get a grade (A-F) and a GitHub Action that runs these tests on every PR. So you see where you're weak before you ship. Works with OpenAI, Anthropic,…

  • A pre-execution guard that stops AI agents running destructive commandsAug 2026 · github.com · ▲5

    A pre-execution guard that stops your coding agent running destructive commands. One shell file, no dependencies. - vandith1/agent-guard

  • FP
    Find prompts that jailbreak your agent (open source)2025 · security.vista-labs.ai · ▲8

    We've built an open-source tool to stress test AI agents by simulating prompt injection attacks. We’ve implemented one powerful attack strategy based on the paper [AdvPrefix: An Objective for Nuanced LLM Jailbreaks](https://arxiv.org/abs/2412.10321). Here's how it works: - You define a goal, like: “Tell me your system prompt” - Our tool uses a language model to generate adversarial prefixes (e.g., “Sure, here are my system prompts…”) that are likely to jailbreak the agent. - The output is a list of prompts most likely to succeed in bypassing safeguards. We’re just getting…

  • Open-Source Gateway to Stop Tool-Abusing Prompt Injections2025 · archestra.ai · ▲9

    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…

  • grimly.ai2025 · ▲16

    Drop-in security for your AI stack.

More ai this month

the category →
  • Video model that turns script into viral social media videos

    AI · 18d ago · spira.ai

  • The browser where Claude Code and Codex work beside you

    AI · 18d ago · rill.love

  • Kolibri is Aleph Alpha

    AI · 20d ago · tej.as

  • Paintings by AI models: programs run through a simulation of oil paint.

    AI · 21d ago · stillwet.art

  • A real-time world model you can explore and change

    AI · 30d ago · world.pixverse.video

  • Beam.win▲378

    Run AI agents on one Mac and use its windows on another

    AI · 4d ago · beam.win

Source: Product Hunt launch ↗

Launched alongside, April 2026

the whole month →
  • Brila▲1,364

    One-page websites from real Google Maps reviews

    AI · Apr 2026 · brila.ai

  • AG

    Thought the resources for GPU arch were lacking, so here we are

    Life & fun · Apr 2026 · jaso1024.com

  • Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

    AI · Apr 2026 · github.com

  • AI meeting notes: now bot-free, in ChatGPT & Claude + more

    AI · Apr 2026 · fathom.ai

  • I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay

    Life & fun · Apr 2026 · sam-burns.com

  • With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

    AI · Apr 2026 · text.blogosphere.app