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World desk7 min

How to Build a Control Plane for AI Agents

An agent control plane coordinates workflows and governs access. Build it around distinct identities, explicit authorization, enforced tool boundaries, observability, and deliberate tenant isolation.
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An AI-agent control plane is the shared layer that coordinates work and governs what agents can access and do. Build it around explicit identities, narrowly scoped permissions, enforced tool boundaries, workflow coordination, and audit-ready observability—not just a central dashboard or a prompt router. The right implementation may use managed cloud services, components your team operates, or a combination; the responsibilities remain the same.

What an agent control plane needs to control

A useful design separates the control plane—identity, policy, coordination, inventory, and oversight—from the execution paths where agents call models, tools, APIs, and data sources. The distinction is logical, not a requirement to deploy two separate systems. A control plane is effective only if its decisions are enforced on the paths agents actually use.

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There is no single vendor-neutral reference architecture established by the available product documentation. AWS describes layered agent architectures and coordination responsibilities; Google Cloud documents a platform approach with identity, registry, gateway, policies, and telemetry. Those are examples of implementation choices, not a universal standard.

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Coordination and workflow state

When agents work together, a coordinator needs to track the task, assign bounded roles, manage handoffs, and deal with failures or conflicting outputs. AWS’s multi-agent guidance describes coordination, conflict resolution, and workflow failure handling; its Step Functions example is one way to model a workflow, not a mandatory component. Keep coordination logic distinct from authorization: a coordinator deciding what should happen does not, by itself, make an action permissible.

Identity and authorization

Give each agent a distinct identity and define what that identity may access. When an agent acts on a user’s behalf, propagate the initiating user’s identity or delegated authorization where the integration supports it; do not assume an agent identity alone captures the user’s permissions. AWS discusses identity propagation, permission boundaries, and action audit trails. Google documents unique agent identities, including SPIFFE-formatted identities, user-delegated OAuth, and explicit policies for connections.

Tool and network enforcement

Enforce rules at the boundary where an agent reaches a tool or endpoint. Google describes an Agent Gateway that mediates traffic and applies policy. AWS describes gateway interceptors that can evaluate, filter, manipulate, or block MCP tool calls and responses. These are documented product capabilities; for any implementation, verify which requests and responses are actually covered and whether agents can bypass the enforcement path.

Inventory, observability, and audit

Operators need to know which agents, tools, endpoints, owners, versions, and permission scopes are in use, as well as what happened during a run. AWS describes observability across architecture layers, including tracing, evaluation, prompt management, and metrics. Google describes telemetry for agent interactions. A registry and telemetry view help operators discover and review the system, but neither substitutes for policy enforcement or durable audit records.

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Build the control plane in a deliberate sequence

The sequence below is a design recommendation, not a vendor-prescribed deployment procedure. Apply it to the agents and tools your organization intends to govern, then validate each enforcement path before relying on it.

  1. Set scope and trust boundaries

    List the agents, users, tools, APIs, data sources, and tenants that fall within the platform’s responsibility. Identify which connections cross trust boundaries and which actions can change data, trigger external effects, or expose sensitive information. Set any human-approval thresholds as local risk policy: the cited guidance does not establish universal thresholds.

  2. Inventory approved agents and connections

    Maintain a discoverable record of each approved agent, its owner, version, purpose, connected tools and endpoints, and permission scope. Include review and retirement in the operating process so an abandoned agent or obsolete connection does not remain implicitly trusted. Google’s Agent Registry is one documented implementation example, not a requirement to use that product.

  3. Assign identities and decide when to delegate user access

    Use a distinct identity per agent where the platform supports it, and map that identity to explicit permissions. For delegated work, decide how the initiating user’s identity or authorization reaches the downstream tool. Avoid treating a shared service account as a complete agent-identity model: it can obscure which agent or user initiated an action. Test what identity the backend actually receives.

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  4. Write explicit authorization rules

    Define which agent may reach which tool or endpoint, with what operation and under which relevant context. Prefer narrow allow rules to broad access followed by informal restrictions. Google documents default-block behavior when an explicit IAM grant is absent; AWS discusses permission boundaries and contextual authorization. Whatever policy mechanism you choose, document its default behavior and test both allowed and denied cases.

  5. Put enforcement on every tool path

    Route tool and network calls through a gateway or interceptor that can apply the relevant policies. Check whether enforcement can inspect or deny calls and responses, and whether alternate routes, direct credentials, or unmanaged endpoints let an agent bypass it. For MCP integrations, record which component handles protocol interaction and which one enforces authorization to the connected endpoint.

  6. Orchestrate bounded workflows

    Give each agent a defined role and limit its available tools to those needed for that role. Use a coordinator to track state, manage retries and failures, and resolve conflicting results. Treat an orchestration framework as a workflow mechanism—not as a replacement for per-agent identity, endpoint policy, or action review.

  7. Instrument runs and policy decisions

    Make traces, metrics, logs, tool interactions, policy decisions, and outcomes available to operators in a form they can inspect and audit. Tie events to the relevant agent and, where applicable, initiating user and workflow. Add evaluation datasets and safety checks where they fit the use case. Decide who reviews alerts and records, and how incidents are investigated; telemetry that nobody can interpret or act on is not an operational control.

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  8. Isolate tenants and review shared services

    For customer or business-unit separation, define tenant boundaries for identities, data, and network access, and retain a central governance view for policy and audit. Google’s multitenant reference architecture uses tenant projects with a central governance hub. If tenants share MCP servers or other tools, ensure user identity and authorization are propagated and checked by the backend rather than assuming that a shared server provides isolation.

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Choose managed services, assembled components, or a mix

A managed platform can reduce the amount of runtime and gateway infrastructure your team operates; assembling components can provide more control over runtime, networking, and integration. Neither approach removes the need to decide who owns identities, policies, upgrades, incidents, and audit review.

Design question Managed platform path Assembled or custom path
Runtime and operations Google documents low-code, managed-code, and custom-code paths. Assess whether its managed options fit the workloads and operations model you need. Choose and operate runtime and networking components yourself. This offers control over those choices but leaves their operation and integration to your team.
Identity and delegated access Verify that the chosen services provide identities per agent and support the user-delegation model your tools require. Select and connect identity components yourself; validate the identity presented to each downstream service and the resulting audit trail.
Policy enforcement Verify that gateway or tool-boundary policies cover the calls and responses in your actual configuration. Compose enforcement at the gateway or interceptor boundary and test that no unmanaged route bypasses it.
Protocol and integrations Check whether the platform supports the protocols and endpoints the agents need, and identify where authorization is enforced. Choose MCP, direct APIs, or both and integrate the corresponding enforcement. Protocol handling and endpoint governance are separate concerns.
Tenant isolation Confirm how the platform separates tenant identities, data, and network access, especially for shared tools. Design and operate tenant boundaries yourself, including authorization and identity propagation to shared backends.
Observability and audit Confirm which traces, interactions, metrics, and policy decisions are visible and retained for operators. Choose, integrate, and operate observability and audit components; ensure records can be correlated across agent and tool activity.
Portability and ownership Identify platform-specific dependencies and assign owners for configuration, policy changes, upgrades, and incidents. Assign owners for each component and integration. The cited vendor documentation does not establish neutral portability measurements for either path.

AWS and Google Cloud are concrete examples rather than a neutral head-to-head evaluation. Choose in light of your existing identity, cloud, security, and operations constraints, then test the real tool and policy paths—including denied requests and tenant boundaries—before production use.

Keep MCP and API management in their proper roles

MCP and API management address different parts of the problem. Google’s component guidance describes MCP as standardizing the interaction format between clients and tools. API management addresses endpoint lifecycle and controls such as authentication, rate limiting, and monitoring. An MCP connection can make tool interaction more consistent; it does not, by itself, decide which agent or user is authorized to reach an endpoint. A design may use MCP, direct APIs, or both, with authorization enforced at the appropriate boundary.

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Validate the design before rollout

  • Identity: Can you identify the agent and, when applicable, the initiating user for a tool action?
  • Authorization: Does an ungranted connection fail as intended, and are permissions limited to the required tools and operations?
  • Coverage: Do all tool and endpoint paths pass through an enforcement point, including alternate routes and shared services?
  • Tenant isolation: Can one tenant’s identity or data reach another tenant’s resources through a shared agent, server, or backend?
  • Failure handling: Can operators see workflow failures and conflicting results, and does the coordinator avoid silently treating them as success?
  • Auditability: Can an operator reconstruct what agent acted, what tool it called, what policy applied, and what outcome followed?
  • Operations: Are owners assigned for policy changes, upgrades, incident response, and review of telemetry?

OpenAI’s governance paper frames baseline responsibilities and safety practices as areas that still require operationalization. That is a reason to make local ownership and review explicit, not to assume a control-plane product resolves governance automatically. Product names, feature availability, and regional support can change; verify current documentation for the services and region you plan to deploy.

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