Review AI agent access on a risk-based schedule, with shorter cycles for agents that touch sensitive data or can change things, and extra reviews after trigger events such as a new tool, a model change or a sponsor leaving. No standard fixes one number, so choose a cadence you will actually keep.
Why agents need reviews of their own
People get access reviews because their jobs change. Agents change faster. Someone adds a tool on Tuesday, swaps the model on Thursday and widens a token scope to fix a bug on Friday. Without a review, the agent ends up holding more than anyone intended, and nobody can say when that happened.
A starting cadence
These intervals are suggestions to adapt to your own risk appetite.
| Agent risk | Review cycle | Reviewer |
|---|---|---|
| Low: read only, non sensitive, internal | Twice a year | Sponsor |
| Medium: read on sensitive data or writes to internal systems | Quarterly | Sponsor and data owner |
| High: production writes, deletion, payments, customer data | Monthly, or continuous monitoring | Sponsor, owner and security |
| Pilot | At the end date | Sponsor decides promote or retire |
Trigger events
Do not wait for the calendar when any of these happens:
- A tool or MCP server is added, removed or updated.
- The underlying model or system prompt changes materially.
- The sponsor changes role or leaves.
- A permission scope is widened.
- The agent is involved in an incident or a near miss.
- A vulnerability is disclosed in a tool the agent uses.
What a review should cover
- Is the agent still needed? If nobody can name the purpose, retire it.
- Does the sponsor still exist and still accept accountability?
- Compare granted permissions with used permissions over the period. Remove what was never used.
- Compare the live tool list with the approved list.
- Check credentials: age, rotation, where they are stored.
- Review blocked attempts and approvals denied. They show where the agent presses on its limits.
- Confirm logging is still working and reaching the right place.
- Record the outcome: keep, reduce, retire.
OWASP's logging guidance says the privileges to read log data should be restricted and reviewed periodically. The same habit applies to the agent's own rights.
Make it cheap enough to survive
A review that takes two hours per agent will be skipped. Generate the evidence automatically: a list of tools, scopes, last used dates and recent denials, so the reviewer only decides. Batch reviews by sponsor so one person handles their agents in one sitting.
Keep the evidence
Auditors and customers may ask how you govern agents. Save the review date, reviewer, what was reviewed, the decision and any change made. A short record per agent per cycle is enough. If you cannot show that a review happened, it will be treated as if it did not.
What counts as a failed review
If a review finds an agent with no sponsor, unexplained access or missing logs, do not just note it. Reduce or suspend access until it is fixed, and track the fix to closure.
Safeguard provides compliance and evidence automation and agent identity features that can help produce and store review records. A free scan is at https://gold.safeguard.sh/scan.
Quick check
Is an annual review enough?
For a low risk read only agent, perhaps. For anything that touches sensitive data or can change systems, review more often and on trigger events.
What is the quickest win in a review?
Remove permissions the agent was granted but never used.
Sources
Last reviewed: 19 October 2026.
