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Cotool

Cotool is a YC Spring 2025 (P25) company. Based in San Francisco, CA, USA. Team of 3.

  • SaaS
  • Compliance
  • Security
  • Cybersecurity

About Cotool

GPAgent's own fund-neutral profile, written from public information. Updated Oct 5, 2026.

Summary

Cotool builds an agentic platform for corporate security operations teams, replacing manual investigation, alert triage, and documentation work. It assembles context across a team's existing security stack, lets practitioners define detection logic in natural language, and generates response automations and reports without coding. The work it displaces includes manual alert review, detection rule maintenance, and threat intelligence filtering that keeps teams reactive instead of proactive.

Business model

Omit – sources do not specify pricing structure.

Go-to-market

Security operations teams at mid-to-large enterprises are the buyers, reached through a sales-assisted demo request flow on the website.

From the Y Combinator listing

How Cotool describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

AI Agents for Security Operations Teams

Cotool is an agentic security platform that eliminates manual and repetitive work for security teams. Today’s cybersecurity teams remain bogged down by alert fatigue, context switching, and documentation overhead. Security teams don't need more dashboards with "AI-powered insights" — they need their time back. Cotool empowers teams to build security their way. Our platform provides an AI co-pilot that automatically assembles context across tools, a no-code agent builder that transforms successful investigations into reusable automations, and automated report generation, providing comprehensive documentation in seconds. Unlike solutions that force teams to adapt to vendor workflows, Cotool puts the power of AI directly in practitioners' hands, letting them shape tools around their unique processes. Early users have already cut time spent on investigation and detection engineering by 70%.

Facts

Industry
B2B / B2B -> Security
Location
San Francisco, CA, USA
Team size
3
Status
Active
Stage
Early

Founders (3)

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