Best AI Agent Identity Companies & Apps (2026)

AI agent identity answers a new question: when software acts on its own, who is it, and what is it allowed to do. As agents and other non-human actors multiply, machine identity and access control become as important as human logins. StartupHub.ai tracks the identity and access companies serving this shift, ranked by funding and traction. The category spans authentication (proving an agent or service is who it claims), authorization and scoping (limiting what it can access and spend), verification, and decentralized or portable identity. Many established identity vendors are extending into non-human identity, while new entrants build agent-native credentials from the ground up. The common thread is least-privilege access for actors that operate at machine speed and scale. Security teams now treat agent and machine identity as a top risk, because a compromised agent credential can move fast and far. The winners will deliver fine-grained, auditable control without slowing agents down. This page updates continuously as new entrants and funding appear.