Infisical Raises $40M at $600M Valuation to Secure AI Agents
SAN FRANCISCO – – October 28, 2026 -- Infisical has raised $40 million in Series B funding at a $600 million valuation to expand its security infrastructure for AI agents. Elad Gil, who also invested in the company's Series A, led the round. Gradient and Y Combinator are among the other investors.
Agent Vault keeps credentials away from AI agents
Infisical's Agent Vault lets companies give AI agents access to systems without handing over credentials. AI agents need access to source code, databases and cloud infrastructure, which normally requires API keys, passwords and authentication tokens. Infisical argues agents cannot be trusted with those credentials.
Companies define the access each agent needs. According to Infisical, the agent then cannot leak credentials in a cyberattack or inadvertently send them to LLM providers or other tools it communicates with.