AIR exits stealth with $50 million to vet AI agent skills and add-ons

AIR, an AI security startup, has emerged from stealth with $50 million across two seed rounds to help companies discover AI agents, continuously vet the skills and add-ons those agents use, and block behavior that fails security checks. The platform is aimed at a growing software supply chain around agent tools such as skills, plugins, MCP servers, and other add-ons that let agents browse the web, read files and email, and act on employees’ behalf.