Your app is the other half of agent SSO

Okta’s general availability of Agent SSO incorporates the Cross App Access standard into core SSO plans, enabling enterprise identity providers to broker authorization for AI agents connecting to applications and MCP servers, but leaving resource applications responsible for validating grants and issuing their own access tokens. Cross App Access, based on the draft Identity Assertion JWT Authorization Grant and existing OAuth standards, requires an application’s authorization server to validate IdP-signed JWT assertions, verify audience and client identity, resolve the external user to a local account, enforce local policy, and issue appropriately scoped, short-lived tokens. The model preserves each application’s control over user permissions, token lifetimes, tenant relationships, and revocation behavior, while generally avoiding refresh tokens so clients must periodically obtain new authorization through the IdP. Although several identity providers, clients, and major SaaS applications support or are developing support for the protocol, adoption among resource applications remains limited relative to the broader SaaS market. The standard is also applicable beyond AI agents, supporting any cross-application workflow in which one service acts on behalf of a user without relying on per-user consent screens or long-lived API keys.

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