Per-user authentication on shared agents is a specific way to credential a team AI agent: each user's queries run under their own login, not under a shared service account. The agent inherits the requesting user's permissions, data scope, and audit identity for that interaction.
That matters now because a lot of teams set this up wrong and don't know it.
In May 2026, Okta announced that its Identity Security Posture Management platform integrates with Anthropic's new Claude Compliance API, letting security teams monitor identity risks inside Claude deployments. A week later, Gartner published a press release that's hard to misread: "Applying Uniform Governance Across AI Agents Will Lead to Enterprise AI Agent Failure."
One bot identity for everyone. That's exactly how most Slack-based AI agents run today.
If your team deployed a shared @SalesOps or @CSBot last year and never touched its credential setup since, this is worth your time. No engineering background needed.
What is per-user authentication on shared agents?
Per-user authentication on shared agents is the model where a single named agent (like @SalesOps in a shared Slack channel) runs each user's request under that specific user's credentials. When Maya in Customer Success asks @SalesOps to pull a Zendesk ticket, the agent authenticates as Maya. When Daniel in RevOps asks the same agent for a pipeline report, it authenticates as Daniel.
Per-user authentication on shared agents, defined: A deployment model where each user's queries through a shared team AI agent run under that user's own login and permission scope, not a shared service account. The agent inherits the requesting user's identity for each interaction. The result: no accumulated permissions, no cross-user data exposure, and audit logs that point to people rather than service accounts.
The agent doesn't accumulate access beyond what each individual user already has. Every interaction is scoped to what that person can see and do on their own.
The technical pattern behind this is called the On-Behalf-Of (OBO) flow, a standard OAuth 2.1 mechanism that lets a service act on a user's behalf while keeping that user's permission scope intact. Microsoft's enterprise architecture documentation calls OBO the right design for any multi-agent setup that touches user data. The constraint: no shared service identity, no accumulating permissions.
On-Behalf-Of (OBO) flow, defined: An OAuth 2.1 mechanism that lets a service act on a user's behalf while keeping that user's permission scope intact. No shared service identity. No accumulated access. Each agent action is scoped to what the requesting human user can actually see and do in any connected system.
Plain terms: the agent acts like you, not like a super-admin no one hired.