WhiteMatter WhiteMatter's executive team is betting that more AI agents are the answer to rogue AI agents.

A startup using AI agents to keep rogue AI in line has raised $20 million.

WhiteMatter, founded in 2024 and formerly known as QuilrAI, has built agents that oversee what a company's existing AI agents can access, do, and share.

The startup spawns one "guardian agent" for each AI agent in an enterprise, which ensures the original agent acts as intended.

Before a company lets an agent access files, use software, make a decision, or trigger an action, WhiteMatter's agent checks whether that's allowed. The so-called guardian also monitors outcomes.

Guardian agents scale automatically — when an enterprise creates a new AI agent, a new guardian agent pops up, too.

"Our existing stack wasn't built for agents being the main actor in the story," Vidit Arora, the startup's 35-year-old founder and CEO, told Business Insider.…