A delegated run is a subtask executed by an agent on behalf of a parent workflow, usually with its own task context and output summary. The security issue is not delegation itself, but whether its lifecycle, scope, and cleanup are controlled.
What a delegated run is in agentic workflows
A delegated run is a child task that a parent workflow hands to an agent to execute with a scoped objective, context, and expected output. The pattern helps break large work into smaller units without giving the child broader authority than it needs.
The key distinction is that delegation changes execution boundaries, not just task assignment. A delegated run usually has its own context window, task summary, and completion signal, which makes it easier to isolate work, but also easier to lose track of what authority was actually granted.
How delegated runs differ from simple task handoff
Delegation is not the same as moving ownership. In a delegated run, the parent workflow still retains control of the broader objective, while the child run handles a bounded step. That means success depends on clear scope, explicit inputs, and a defined return path for the result.
This matters because an agent can complete a delegated run correctly while still producing an outcome that is misaligned with the parent workflow if the boundary was vague. In practice, delegated runs are useful when the work is decomposable and the parent needs traceable execution rather than a free-form autonomous action.
Why lifecycle and cleanup are part of the term
The security meaning of delegated run comes from lifecycle control. A run that starts with valid scope but is not expired, revoked, or cleaned up at the right time can leave behind lingering context, stale permissions, or reusable artifacts that exceed the original intent.
That is why delegated runs should be understood as temporary execution objects, not permanent capabilities. Their value comes from being short-lived, auditable, and bounded by the parent workflow’s policy, especially when the agent can invoke tools or touch sensitive state.
Where delegated runs fit in agent architecture
Delegated runs are most useful in systems that need modular orchestration, parallel execution, or compartmentalized responsibility. They let a parent agent break a complex process into subtasks without turning every step into a full independent workflow.
They also create a clearer place to reason about task-specific context, output summaries, and completion checks. When designed well, that structure improves reliability and makes it easier to trace what a child agent was allowed to do, what it actually did, and what should happen next.
Risk and Threat Considerations
Delegated runs create risk when the delegated scope outlives the task, when context is broader than intended, or when cleanup is inconsistent. The main exposure is not delegation itself, but the possibility that a child run retains usable authority, data, or artifacts after the parent workflow has moved on.
Failure mechanism: A parent workflow grants a child run more context, tool access, or persistence than the task requires, then fails to terminate or sanitize that run cleanly. An attacker or misbehaving agent can exploit the leftover execution path, stale context, or summary leakage to influence later actions.
Impact: The result can be unauthorized follow-on activity, data exposure, task confusion, or privilege creep across repeated runs. In agentic systems, poor run hygiene can turn a local subtask into a broader trust failure.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Agentic AI Top 10 addresses the attack and risk surface, while NIST SP 800-53 Rev 5 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Agentic AI Top 10 | ASI03 — Identity & Privilege Abuse | Delegated runs depend on bounded authority for agent execution. |
| ASI02 — Tool Misuse | A delegated run can misuse tools if scope or context is too broad. | |
| Recommendation — Limit delegated runs to the minimum authority needed for the child task. Constrain tool access to the exact actions required by the delegated run. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | Delegated execution should only retain the privileges needed for the task. |
| AU-12 — Audit Record Generation | Delegated runs need traceability for task execution and completion. | |
| Recommendation — Apply least privilege to each delegated run and revoke unused permissions promptly. Record delegated run start, scope, actions, and completion in audit logs. | ||
| NIST Zero Trust (SP 800-207) | 3.1 — Zero Trust Core Principles | Delegated runs benefit from continuous verification of bounded access. |
| Recommendation — Verify delegated run trust and access continuously instead of assuming inherited trust. | ||
Practitioner Guidance
Why practitioners should care: Delegated runs are only safe when the parent workflow can prove what was delegated, for how long, and under what limits. Treat the run boundary as a control point, not just an implementation detail.
Common misunderstanding: Teams sometimes assume that a delegated subtask is safe because it is “just a child run.” In reality, the security posture depends on how tightly the run is scoped, how cleanly it ends, and whether its output can be trusted without carrying forward hidden state.
Practitioner takeaway: If you cannot answer who owns the run, what it can touch, and how it is retired, the delegation model is incomplete.