Auth0 for AI Agents is Auth0's identity offering for teams building AI agents. It handles authentication and authorization for agents that act on behalf of users, so developers can connect agents to apps, APIs and MCP servers without rebuilding the identity layer for each new agent.

Key features:

Authenticate users in agent and chat experiences.
Call third-party APIs on a user's behalf with tokens stored in Token Vault.
Ask users to approve sensitive agent actions with asynchronous authorization.
Limit what data agents can reach with Fine-Grained Authorization.
Secure B2B agents with AI Identity for B2B.
Support verified checkout, loyalty and fraud prevention with AI Identity for Commerce.

Auth0 is a cloud identity platform from Okta with SDKs for major languages, and private deployment is available as an enterprise add-on. The Free plan covers up to 25,000 monthly active users and includes agentic AI workflows; Essentials starts at $35/month and Professional at $240/month, while AI Identity for B2B and Commerce are enterprise add-ons.