PromptBrake
Security testing for LLM-powered API endpoints
Details
- Categories
- AIDeveloper ToolsCybersecurity & Privacy
- Use Cases
- Testing & QAWebsite Security
- Target Audience
- DevelopersQA EngineersEnterprises
- Pricing
- Subscription from $49
- Platforms
- Web
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293 AI reads in the last 30 days, ranked against every AI tool listed.About PromptBrake
PromptBrake helps teams security-test LLM-powered API endpoints with a fixed suite of automated attack scenarios. It finds prompt injection, prompt leaks, data exposure, and unsafe tool behavior, then returns clear PASS/WARN/FAIL results with evidence and remediation guidance. It’s built for APIs powered by OpenAI, Claude, Gemini, and custom LLM-backed apps, and analyzes results without using another LLM. It also includes free tools such as an LLM security checklist, a prompt injection payload generator, and an OWASP LLM test case mapper to help teams validate their setup early.
Product Video
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Product Updates (1)
Replay Packs and Free Tools
Two PromptBrake updates are now live. 1- Replay Packs help you test curated reproductions of real-world LLM attacks against your endpoint. 2- We also launched free public tools for teams doing earlier-stage security work: - LLM Security Checklist Builder - Prompt Injection Payload Generator - OWASP LLM Test Case Mapper Use the free tools to tighten your process. Use PromptBrake to run repeatable attacks against the AI API you actually ship.
Comments (2)
Really impressive to see this go live. This is a wonderful addition to the market. Rooting for your success!
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Comments (16)
How can i avail free credits
@subramani - You can sign up for free. In each plan, we offer a free trial so you can run a couple of scans.
Cool
Interesting project!
@NexiunDev - Thanks!
Peak permaculture
Nice work
@charlie6797 - Thanks!
Good for new startups
@shirleyyy - Absolutely!
Seems valuable
@jkleiner1 - Exactly, thanks!
Strong niche—LLM security is getting urgent fast. The non-LLM deterministic PASS/WARN/FAIL approach is a smart differentiator vs “LLM testing LLMs.” That clarity + OWASP mapping feels especially valuable for dev teams.
@jaybird84404 Correct, it is a strong niche with all AI products floating!
Great job
@alex5616 - Thanks!
Tried it Nice effective
@lloydperiera - Appreciate it — glad it was useful 🙌 If anything felt off or missing, I’d love to hear it.