Summary: A team evaluating AI agent identity management needs to connect an agent's owner and credentials to the actions its tools can perform. A login or inventory entry alone does not show that a shell command, MCP call or repository change is permitted. The APort GitHub integration provides a concrete example: GitHub OIDC establishes repository identity, then a separate policy check evaluates the repository action.
Compare identity providers by the control your workflow lacks. Auth0 documents delegated API access, Okta documents agent access governance, Entra documents agent identities, and SPIFFE defines workload identity. APort adds passport-based decisions at connected tool boundaries. The sources below describe these capabilities; this is not a comparative performance test. APort publishes this guide and sells one of the products discussed.
Compare the control, then the provider
| Provider or standard | Documented capability and primary source | When to evaluate it |
|---|---|---|
| Auth0 | Token Vault stores connected-account tokens and exchanges them so an application can call external APIs on a user's behalf. Auth0 also describes fine-grained authorization for agent actions. | Your agent needs delegated access to user resources. Check whether your API's authorization covers the proposed operation and its parameters. |
| Okta | AI agent access governance covers access requests, certifications and remediation for apps linked to agents. Okta's agent offering also describes discovery, registration and runtime controls. | You need to manage who can use agents and which resources agents can access. Verify the available controls for your edition and tool integrations. |
| Microsoft Entra Agent ID | Agent identities identify and authenticate agents. Agent service principals extend the existing Entra service-principal model with agent-specific behavior. | Your agents use Microsoft identity infrastructure. Review supported resources, permissions and lifecycle controls for your tenant. |
| CyberArk / Idira | Palo Alto Networks’ Idira overview describes identity security across human, machine and AI agent activity. | You need privileged-access and identity-security controls around the resources agents use. Verify which capabilities are available for the deployment and product you are considering. |
| SPIFFE / SPIRE | The SPIFFE overview defines workload identities and verifiable identity documents, including X.509 and JWT SVIDs. SPIRE implements workload attestation and identity issuance. | You need workloads to authenticate each other across infrastructure. Map that workload identity to the agent permissions your application enforces. |
| APort / Open Agent Passport | The OAP specification defines passport and policy concepts. APort runtime integrations connect supported tool hooks to allow/deny checks; AI agent passports declare the owner and permitted capabilities. | You need passport-based checks before connected tool calls and hosted decision evidence. Confirm the hook covers each tool and honors denial. |
A vendor's omission from a particular example is not evidence that it cannot implement the control. We have not benchmarked these providers against each other or verified every edition. No latency ranking or claim of being first is implied.
When your current identity provider is enough
Suppose an agent schedules a meeting through an API. If delegated consent, API scopes, resource permissions and your application checks already constrain the calendar, participants and action, another authorization service may add little value. Prove that those checks apply to every route the agent can use, including background work.
Identity platforms provide authorization as well as authentication. The buying question is where a check runs, which inputs it sees and how your application enforces its result.
When to add a tool-boundary check
A coding agent may also run shell commands, read local files and call MCP tools. An API token does not by itself install a hook around those local operations. APort's supported integrations can evaluate the proposed operation against a passport and policy before the tool runs.
For example, a Claude Code hook can reject a read of a sensitive path. An MCP tool check can reject a server outside an explicit allowlist. Try the Claude Code setup and denied read or the MCP allowlist test. These are local integration tests, not evidence that every runtime or remote service is protected.
Keep the MCP authorization flow for access to restricted HTTP MCP servers. APort does not replace MCP OAuth, an identity provider, server-side authorization or least-privilege credentials.
Evaluate with one real workflow
- Name the identity: user, workload, agent or delegated session.
- List the tool and API paths that can produce the action.
- Run an allowed operation and an operation outside the intended policy.
- Verify that enforcement stops the denied operation, including when verification fails. Report-only mode records findings without blocking.
- Inspect the evidence: identity, operation, policy, outcome and reason. Measure latency in your own environment.
Bring the identity to the action
Use the authentication and access-control guide to distinguish the credential from the proposed action. A hosted OAP decision can provide a signed policy result, but the runtime must enforce it. A permissive passport or a hook the tool never reaches is not evidence of protection.
The runtime quickstart describes installation, and the Team Pilot scope covers a hosted rollout with a team.
Create my passport for one agent with an identified owner and explicit capabilities. Bring an allowed call and a denied call to the connected runtime before expanding that scope.
Frequently Asked Questions
Common questions about this topic.