Directory / Agent Observability & Evals

Fabraix

The world's frontier hacker of AI agents.

Fabraix is a Nyx is an automated adversarial verification and autonomous testing harness for AI systems and AI agents, including chatbots, browser agents, voice agents, multi-agent systems, and other agentic applications. It is positioned for teams that want to red-team or continuously test agent behavior and safety. AI agent company selling to Teams building or deploying AI agents. Latest disclosed round: Last known: Pre-Seed ($0). About 2 employees, +100.0% over 6 months.

Agent Observability & EvalsSimulation & testingActivefabraix.com ↗

Headcount

—▲ 100.0%3m · 6m

src: Clay (LinkedIn)

X followers

—

——7d · 30d

Traffic / month

7,072

src: Clay (web traffic)

Latest round

Last known: Pre-Seed—

src: crunchbase.com/organization/fabraix-ltd

// profile

Product

Agent type: Nyx is an automated adversarial verification and autonomous testing harness for AI systems and AI agents, including chatbots, browser agents, voice agents, multi-agent systems, and other agentic applications. It is positioned for teams that want to red-team or continuously test agent behavior and safety.
Primary buyer: Teams building or deploying AI agents
Integrations: —
MCP support: —
Pricing: Contact sales
HQ: San Francisco, US
Founded: 2026
LinkedIn: Profile ↗

// capital

Funding

Round: Last known: Pre-Seed
Amount: $0
Date: —
Leads: {"Y Combinator"}
Source: Announcement ↗
Investors: Y Combinator

// team

Hiring

Employees: 2
Growth 3m / 6m: — / +100.0%
Open roles (sample): —
X mentions this week: —
X handle: —

// x.com

Recent news

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No news tracked yet

This view fills in automatically once the weekly dataset is loaded.

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Sources

Last verified: Nov 4, 2026

Profile: https://www.ycombinator.com/companies/fabraix
Funding: https://www.crunchbase.com/organization/fabraix-ltd
Headcount: Clay (LinkedIn)
Open jobs: —
Traffic: Clay (web traffic)
Pricing: https://fabraix.com/pricing
X metrics: —
X handle (homepage-verified): —
Clay enrichment: Clay enrichment 2026-11-04
Homepage: https://www.ycombinator.com/companies/fabraix | https://fabraix.com
funding: https://www.crunchbase.com/organization/fabraix-ltd
seed_type: YC directory
funding_status: Last known (aggregator source)
funding_source_type: aggregator

// related

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// faq

About Fabraix

What does Fabraix do?+

The world's frontier hacker of AI agents.

How much has Fabraix raised most recently?+

Last known: Pre-Seed, led by {"Y Combinator"}.

How many employees does Fabraix have?+

About 2 (3-month growth —).

How is Fabraix priced?+

Contact sales.

// cite

Cite this data

Fabraix profile. Agent Market Map, The GTM Engineering Newsletter. Last verified Nov 4, 2026. https://agentmarketmaps.com/company/fabraix