Fabraix
What is Fabraix?
Fabraix is an advanced adversarial verification platform designed specifically for AI agents and multi-agent systems. Built by ex-Meta engineers, it provides a dedicated adversarial staging environment called Nyx that launches over 1,000 automated strategies to stress-test AI systems across security, logic, and alignment. Unlike traditional software testing, Fabraix uses a pure blackbox approach that adapts in real-time to the agent's behavior, helping developers find reasoning gaps, prompt injections, and reward hacking before they reach production. It supports various modalities including text, voice, and browser-based interactions, and integrates directly into CI/CD pipelines for continuous safety coverage.
How to use Fabraix?
To use Fabraix, users can point the Nyx testing harness at their AI agent's endpoint. No complex integration or internal access is needed due to its blackbox nature. The system then runs parallel adversarial simulations to discover failure modes, which are presented in a comprehensive findings report or dashboard.
Fabraix's Core Features
Nyx autonomous testing harness with 1,000+ adversarial strategies
Multi-turn, adaptive stress tests that reason across interactions
Pure blackbox testing with no special access or integration required
Multi-modal support for text, voice, images, and browser-based agents
Continuous CI/CD coverage for automated re-testing on every update
Adversarial Cost to Exploit (ACE) research-backed benchmarking
Fabraix's Use Cases
Detecting prompt injections and PII exfiltration in LLM chatbots
Preventing tool-use hijacking and unsafe code execution in autonomous agents
Identifying reward hacking and misalignment in Reinforcement Learning (RL) systems
Testing financial advisors for hallucinated advice and compliance gaps
Probing healthcare copilots for PHI leakage and unsafe triage logic
FAQ from Fabraix
What makes AI agent testing different from traditional software testing?
Does Fabraix require access to my agent's source code?
What is the Adversarial Cost to Exploit (ACE)?
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Fabraix Pricing
Research
$0
For academic and independent AI research. 1 target, basic scan coverage, and standard reports.
Team
Custom
For companies building AI. Multiple targets, full interaction library, uncapped scan depth, and dashboard export.
Enterprise
Custom
Dedicated infrastructure, unlimited targets, full remediation support, SSO, and audit logging.
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