Security Startups

Manifold

Detection and response for AI agents on employee endpoints: maps what each agent touches, baselines its behavior, and stops the ones that go rogue.

Proof of life. Raised an $8M seed round led by Costanoa Ventures, March 2026

About Manifold

Manifold watches what AI agents do on employee machines rather than what they say.

It records agent actions such as tool calls, command execution, file access, and connections to MCP servers and databases, builds a behavioral baseline per agent, and flags deviations as they happen.

Security teams get a live map of which agents run where and what they can reach, a risk view of privilege paths and delegation chains, and controls to quarantine or terminate a rogue agent.

It runs on existing infrastructure, with no proxy or gateway in the traffic path. The founders previously built LLM Guard at Laiyer AI, which Protect AI acquired in 2024.

Investors

Costanoa VenturesCherry VenturesRain CapitalModern Technical Fund
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