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Cotool

Active · Security operations optimized for agents.

11signal of 100 · rising 7
  • team of 8Team size · YC's directory+4.9
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

Adjacent

Also from X25 in AI

All of X25

Founders

  • Max PollardFounder/CEO
  • Logan CarmodyFounder/CTO
  • Eddie ConkFounder/CPO

About Cotool

Cotool builds AI agents and the infrastructure around them to help security teams detect threats, investigate alerts, hunt for attacks, and respond. Our agents work across a team's security tools and data. They investigate alerts, write and tune Python detections, and turn threat intelligence into hunts and new coverage. Teams can customize agents around their workflows, inspect the evidence, edit detection logic, and bring humans in when judgment or approval matters. Underneath the agents, Cotool provides log storage and search built for their workloads, with access to data where it already lives. The goal is to give security teams more capacity to defend their companies as their environments and workloads grow. Teams at Ramp, EliseAI, ClickHouse, Legora, and many more use Cotool.

YC batch
X25 · Spring 2025
Status, per YC
Active
Category
AI
Team size
8
Location
San Francisco, CA, USA
Founded
2025
Checked
6h ago

YC tags: SaaS, Compliance, Security, Cybersecurity

Changes seen

Team sizeOct 15, 2026

Team went from 4 to 8 people.

HiringOct 15, 2026

Started hiring.

One-linerOct 15, 2026

Rewrote its one-liner; it read "AI Agents for Security Operations Teams"

Cotool in X25: 144 companies, 90% AI

LinkedIn

Cotool: questions

Which YC batch was Cotool in?

Cotool was in Y Combinator's Spring 2025 batch (X25).

Is Cotool still active?

Y Combinator lists Cotool as active.

Who founded Cotool?

Cotool's founders, as listed on its YC page: Max Pollard (Founder/CEO), Logan Carmody (Founder/CTO), Eddie Conk (Founder/CPO).

Where is Cotool based?

Cotool lists San Francisco, CA, USA as its location on YC's directory.