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Dev tools · April 1, 2026

PromptBrake

Test your AI API before hackers do

What it does

Test your AI API before hackers do. Connect your endpoint, run a scan, and see what breaks. PromptBrake runs 60+ real-world attack scenarios, such as prompt injection, data leaks, and unsafe tool behavior. Get clear PASS/WARN/FAIL results with evidence and fixes. Works with OpenAI, Claude, Gemini, or your own API.

Does the same job

all alternatives →
  • PromptBrakeMar 2026 · ▲6

    Find AI vulnerabilities before hackers do

  • TestMyPrompt25d ago · testmyprompt.net · ▲4

    Find vulnerabilities in your AI prompts before your users do

  • 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…

  • EY
    Enter your domain and my open-source agent will hack it2025 · github.com · ▲14

    I built an open-source AI agent for security testing to find and fix vulnerabilities in your code. I’ve noticed how bad security vulnerabilities have gotten with everyone shipping AI code slop, so I wanted to build something that allows for vibe-coding at full speed without compromising security. Traditional security tools aren’t effective, and manual pen-testing can’t keep up with the rapidly growing AI code This tool runs your code dynamically, finds vulnerabilities, and validates them through actual exploitation. You can either run it against your codebase or enter your (or someone…

  • PromptPerf 2.0Dec 2025 · ▲18

    Find which AI wins for YOUR prompts. Test 100+ models free.

  • Test AI ModelsFeb 2026 · ▲23

    Compare AI models side-by-side on same prompt

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