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Fulcrum

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The agentic debugger for AI systems

Summer 2025Founded 20252 peopleSan Francisco, CA, USA

About

We build red-teaming agents that help developers fix their RL environments and improve their agents. Our customers are tired of being bullshitted by their agents.

Founders Β· 2

Kaivalya Hariharan
Kaivalya HariharanFounder
MIT

MIT CS & Math ’24. MEng AI candidate under Jacob Andreas (LINGO) group. Best Paperβ€”NeurIPS ML Safety ’22; follow-up at NeurIPS ’23 and benchmark paper accepted to NeurIPS ’24. Emergent Ventures Fellow ’25. Founder of MAIA (MIT AI Alignment). Research stints at Redwood Research and Truthful AI. USABO Nationals finalist (camper), two-time AIME qualifier.

Uzay Girit
Uzay GiritFounder
MIT

working on better human AI collaboration - building oversight interfaces for AI agents. I did ML research on in context learning and scaling laws, studied math and CS at MIT, into writing and climbing. From Paris. Website: https://uzpg.me

Launch

Launched on Y Combinator Β· Aug 2025
View launch post β†—

Fulcrum - for those who are tired of being bullshitted by their agents

Fulcrum builds software to debug AI agents and their environments. It offers monitoring, red-teaming, and explorable reports to identify why agents fail, detect bugs or reward hacking, and diagnose issues in RL environments and agent traces.

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