Secure delegation is the practice of granting a limited action to an AI agent without exposing the human’s original credentials. It separates authorisation from identity reuse so the organisation can scope, log, and revoke access cleanly. The goal is controlled execution, not credential transfer.
Expanded Definition
Secure delegation is the controlled handoff of a specific action from a human to an AI agent or other non-human identity, without passing along the human’s primary credentials. It matters because the agent needs enough authority to complete a task, but not enough to impersonate the person broadly.
In practice, secure delegation separates identity from authority. The human remains the accountable principal, while the agent receives a constrained permission set, a short-lived token, or a scoped grant tied to a single workflow. That distinction is central to NHI governance and aligns with the least-privilege intent described in the NIST Cybersecurity Framework 2.0. In NHI programs, secure delegation is often implemented alongside approval workflows, audit logging, revocation rules, and just-in-time access patterns.
Definitions vary across vendors when products describe delegation, impersonation, token exchange, or “agent permissions,” but no single standard governs this yet. The operational test is simple: if the AI agent can act without ever seeing the human’s reusable secret, the model is closer to secure delegation than credential sharing. The most common misapplication is treating delegated execution as identity reuse, which occurs when teams let an agent inherit a user’s long-lived session or API key.
Examples and Use Cases
Implementing secure delegation rigorously often introduces workflow friction, requiring organisations to weigh faster automation against tighter approval, scope, and revocation controls.
- An AI agent is allowed to open a support ticket and attach evidence, but it cannot read customer secrets or modify billing settings.
- A developer delegates a one-time code review action to an agent through a scoped token, while keeping the personal SSO session private.
- An operations agent is permitted to restart a service only within a predefined environment window, with logging tied back to the original approver.
- A procurement assistant can draft purchase requests, but human approval is required before any payment or vendor onboarding step is executed.
- Delegation is paired with short-lived credentials and offboarding controls described in the Ultimate Guide to NHIs, rather than embedding a reusable secret in the agent runtime.
These patterns map to modern identity guidance that favors constrained authorization over credential transfer, especially when NIST Cybersecurity Framework 2.0 principles are applied to automated actors. In mature implementations, the delegation record also captures who approved the action, what tool was used, and how long the permission remained valid.
Why It Matters in NHI Security
Secure delegation is a control boundary, not just a convenience feature. Without it, AI agents often inherit standing access that is wider, longer-lived, and harder to audit than the task actually requires. That creates a direct path from automation to privilege abuse, secret exposure, and ambiguous accountability.
This is especially important because NHI risk is already dominated by weak secret handling and excess privilege. NHIMG reports that Ultimate Guide to NHIs found 97% of NHIs carry excessive privileges, and 79% of organisations have experienced secrets leaks with tangible damage. Secure delegation reduces both problems by avoiding credential reuse and making revocation practical when an agent is misconfigured, compromised, or simply no longer needed.
For governance teams, the key question is whether the delegated action can be revoked independently of the human account. That is why secure delegation is most valuable when paired with lifecycle controls, scoped authorization, and continuous logging. Organisations typically encounter the need for secure delegation only after an agent overreaches, a secret is exposed, or an incident review reveals that automation was running with the wrong level of trust, at which point the concept becomes operationally unavoidable to address.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-02 | Secure delegation avoids secret exposure and overbroad NHI permissions. |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access and access control are core to delegated AI actions. |
| NIST Zero Trust (SP 800-207) | Zero Trust expects every delegated request to be explicitly authorized and verified. |
Treat each agent action as a separate authorization event and enforce continuous validation.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
