The identity and usage context carried with an agent request, such as which user the agent acts for and which client initiated the call. It helps an API understand the request, but it does not replace policy enforcement or validate whether the action should proceed.
Expanded Definition
Delegated Context is the request metadata that tells a system which human user an agent is acting for, which client or workspace initiated the call, and what scope of delegated authority applies. In agentic AI and service-to-service flows, it is useful for routing, auditing, and user-facing attribution, but it does not by itself prove authorization. No single standard governs this yet, and usage in the industry is still evolving across MCP implementations, identity providers, and API gateways.
The distinction matters because Delegated Context describes intent and provenance, while policy engines decide whether the action is allowed. A mature design treats it as an input to enforcement, not a replacement for NIST Cybersecurity Framework 2.0 controls, token validation, or RBAC decisions. It should also be bound to the agent’s identity, the target resource, and the transaction lifetime so that context cannot be replayed outside the session. For NHI programs, this is especially important when an agent can invoke tools, retrieve secrets, or act on behalf of multiple principals. The most common misapplication is treating delegated context as an authorization grant, which occurs when teams trust request headers or prompt-supplied claims without independent policy enforcement.
Examples and Use Cases
Implementing Delegated Context rigorously often introduces extra plumbing and tighter token handling, requiring organisations to weigh auditability and user attribution against integration complexity.
- An AI support agent opens a ticket on behalf of a customer, carrying the customer ID and tenant ID so the system can log the action correctly while a policy engine still checks whether the agent may update that record.
- A workflow automation bot requests a payment file for a finance manager, but the API only honors the call after validating the delegated scope, the manager’s approval state, and the bot’s NHI credentials.
- A developer tool uses a short-lived session to call internal APIs, and the request includes who initiated the job plus the repository or environment that triggered it, supporting traceability described in the Ultimate Guide to NHIs.
- An IT assistant agent reads incident data for one team but is blocked from exporting secrets because the delegated user context does not override vault policy or Zero Trust checks.
- A federated workload passes a subject claim through an API gateway so downstream services can render audit logs, while the gateway still enforces access using NIST Cybersecurity Framework 2.0 style authorization controls.
In practice, the term is most useful when teams need both accountability and containment: the system can know who requested something without assuming the request is safe.
Why It Matters in NHI Security
Delegated Context becomes critical when agents, service accounts, and APIs operate across shared environments, because weak context handling can blur the line between a legitimate action and an overreaching one. If the context is injected from an untrusted client, copied from stale session data, or allowed to outlive the original approval, an attacker can use it to impersonate intent while bypassing controls. That risk is one reason NHI governance must cover context binding, token scope, secret protection, and revocation together, as explained in the Ultimate Guide to NHIs. The same governance lens aligns with NIST Cybersecurity Framework 2.0 because identity and access decisions must be traceable and bounded.
NHIMG research shows that 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface. When delegated context is handled poorly, those privileges become even more dangerous because an agent can appear to be acting on behalf of a valid user while actually operating beyond approved scope. Organisations typically encounter this consequence only after an incident review or tool misuse event, at which point Delegated Context 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 Agentic AI Top 10 and OWASP Non-Human Identity Top 10 address the attack and risk surface, while 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 | A1 | Agent request context and tool use are core agentic AI security concerns. |
| OWASP Non-Human Identity Top 10 | NHI-01 | Delegated context must not replace NHI authentication or authorization controls. |
| NIST Zero Trust (SP 800-207) | 3.4 | Zero Trust requires continuous verification regardless of conveyed request context. |
Continuously validate context, identity, and device trust on every delegated call.
