AI Agent Permissions Testing: Tools, Access and Approvals.

What should AI agent permissions testing cover?

An assistant that drafts a reply has a different risk from one that sends it, changes a customer record or authorises a payment. Start with a list of available tools and the identity used for each connection. Remove access that is unnecessary for the agreed job.

OWASP describes excessive agency as a risk caused by too much functionality, permission or autonomy. This guide applies that distinction to business workflow review. It is a starting point for authorised testing, not a security certification or a complete penetration-test method.

Treat outside content as information, not permission

Imagine an agent reading a supplier email that contains instructions to change payment details. The message is input to review; it is not approval from the business owner. This is an invented example of the boundary a test should examine.

Prompt injection is an attempt to make an AI follow unwanted instructions inside a request or material it reads. The important observable outcome is whether the system takes an unauthorised action, exposes information or loses track of the authorised task.

• Use synthetic records and an authorised, isolated test environment.
• Check access as different users, including a user without the required permission.
• Test whether outside documents can trigger actions beyond the original request.
• Try a changed action after approval and verify that old approval does not apply.
• Inspect downstream records and access logs, not just the assistant’s reply.

Make approval specific to the action

An approval should identify what is being approved: the record, recipient, amount or other material details. Changing those details should require a new decision according to the business policy. “The agent asked once” is not a sufficient description of the control.

Where possible, the tool or service should reject actions the current user cannot perform. A model prompt can explain a boundary, but access control must still hold if the model misunderstands or ignores it. Test the refusal and verify that no side effect occurred.

Record limits as clearly as failures

For each case, capture the permitted task, test identity, untrusted input, attempted action and observed state. A blocked action is different from an action that could not be tested because the service was unavailable.

Repeat the relevant checks after adding a tool, changing permissions or updating how external content enters the workflow. Passing a selected set of cases cannot establish that all prompt-injection attempts will be blocked. Use appropriate security review and monitoring for the system’s actual risk.

Apply the same questions across platforms

These questions can apply to OpenClaw, Hermes Agent, framework-based agents and custom assistants connected through APIs. The available checks depend on the deployment, permissions and evidence provided. VisiFlo confirms assessment scope and any need for specialist security work before accepting an engagement.