Two seed rounds · Cybersecurity

AIR discloses $50m across two seed rounds at stealth exit

The AI agent security company launches publicly with backing from Sequoia, Greenoaks, Swish, Netz and TTP.

TechCrunch reports a $10 million Seed round led by Sequoia Capital followed by a $40 million round led by Greenoaks. The company will use the funding to hire security researchers and expand its commercial presence in the US and Europe.

AIR filters untrusted inputs before they reach an AI agent’s context. Its platform addresses risks from external websites, add-ons and changing enterprise data as businesses connect coding agents to more systems.

Use of funds

Hiring security researchers

Expanding go-to-market in the US and Europe

Funding history

Two seed rounds · This round$50M

Sources

  1. air.security
  2. AIR Comes Out of Stealth: A Firewall for AI Agent Contextair.security · Sep 1, 2026
  3. AIR raises $50M to help companies vet the skills and add-ons AI agents usetechcrunch.com · Sep 1, 2026