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Built PromptBrake: AI API security testing for teams shipping LLM features (waitlist open)

Howdy IH,

I’m building PromptBrake (https://promptbrake.com), an AI API security testing product for teams at any stage, from founders and security leaders to engineers shipping production systems.

Waitlist: https://promptbrake.com/waitlist

What it does today:

  • Tests AI API endpoints with a fixed library of real attack patterns.
  • Covers prompt injection, indirect injection, data leakage, tool misuse, and safety bypass behavior
  • Returns pass/warn/fail results with evidence and remediation context

How teams use it:

  • Pre-release: catch issues before launch
  • Post-release: re-test after model, prompt, tool, or config changes

Current scope (MVP):

  • Endpoint-focused security testing
  • Manual runs (no CI/CD automation yet)
  • No scheduled scans/alerts yet

Why I built it:

I kept seeing teams ship AI features fast, but security checks were inconsistent, hard to repeat, or too heavy for day-to-day engineering workflows.

Would value blunt feedback:

  • Which failure modes are most painful in your environment?
  • What’s the minimum needed for this to fit your release/security process?
  • What would block you from trying it first?

Thanks.

on February 13, 2026
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    Quick follow-up:

    The MVP is fully functional and now live, ready for teams to secure and stress-test their AI endpoints.

    We’re continuing to improve the product based on user feedback while hardening and maintaining the platform. During this phase, you may occasionally experience intermittent service.

  2. 1

    Quick follow-up:

    We’re getting closer to full MVP release, and we’ve been implementing updates based on feedback from different users. One recent addition is CI integration for Pro paid accounts: users can generate CI API keys in the dashboard and run scan/gating endpoints from their own pipelines.

    We’re still in waitlist mode while we keep hardening and validating the workflow end-to-end.