Begin with the identity’s purpose
A runtime can involve a deployment identity, a running workload identity, an end user and credentials for downstream tools. These are not interchangeable. Document which actor each credential represents and what the receiving system may conclude from it. AWS separates permissions used to create or deploy runtime resources from an execution role used by the agent. That is a practical example of why setup convenience should not define production authority. A role that builds infrastructure can carry capabilities an ordinary session should never inherit.
Preserve the user and workload relationship
When a service acts for a person, determine how the person’s permitted scope is enforced downstream. A broad service credential should not quietly turn a restricted request into organization-wide access. The precise identity mechanism depends on the platform, but the intended delegation needs to be explicit. An authenticated agent is still subject to resource authorization. OWASP emphasizes checking the sender’s permissions at the receiving service rather than treating a recognized source or a valid message signature as permission for the requested operation.
Limit credential exposure
Avoid putting secrets into model context, tool descriptions, routine logs or documents an agent may repeat. Prefer supported mechanisms that provide the required capability without unnecessarily exposing credential material. Scope and duration should match the purpose and operating requirements. IBM’s October announcement describes governed agent identities and short-lived credentials through its products; those are vendor-specific capabilities whose supported behavior needs verification. They illustrate an active product direction, not proof that every runtime implements automatic least privilege or universally effective revocation.
Design rotation and revocation as operations
Identify who changes permissions, how revoked access reaches the affected services and what happens to ongoing work. Test the actual implementation rather than assuming a policy update instantly reaches every dependency. Expiry, session termination and resource authorization can operate on different lifecycles. A process may still be running after a credential becomes invalid, or another component may retain an independent capability. Record these relationships and provide an accountable procedure for stopping or restricting work when the original authority no longer applies.
Keep support and administration in scope
Human support teams, management consoles and automation often have broader access than ordinary sessions. Inventory those routes and require appropriate controls. A clean application role does not establish that every administrative path is equally restricted. Maintain ownership records for credentials and identities so stale or unneeded capabilities can be found. Review account and supplier changes deliberately. The aim is not to eliminate all operational access, but to make its purpose, approval, visibility and removal understandable throughout the service lifecycle.
Evaluate the complete authority chain
Test allowed access, denied resources, changed user scope, expired credentials and recovery from an unavailable identity dependency. Record policy, role and runtime versions with meaningful outcomes. Review both excess privilege and broken legitimate workflows. A useful runtime-identity design explains who is acting, what authority was delegated and how the receiver enforces it. It does not confuse a verified agent identity with a universal mandate, nor assume that changing the runtime’s brand or underlying compute automatically resolves the permissions of every connected business system.
Worked scenario: a contractor’s completed assignment
A contractor-owned agent finishes a limited reporting assignment. The organization removes the delegated access and tests whether later requests can still retrieve the former project’s records. It also reviews independent tool credentials and support paths rather than checking only the agent’s visible account. The runtime may remain available for another authorized task, but that does not justify retaining all earlier capabilities. This hypothetical lifecycle review should record the expected denial and actual receiving-service behavior, making removal of authority a verifiable operation instead of an assumption attached to account status.
