outlook_find_meeting_times

THE RISK

Low Risk

Why outlook_find_meeting_times needs a policy

This tool queries calendar data to determine when attendees are available and suggests optimal meeting slots. It has no side effects: it doesn't create events, modify calendars, send emails, or delete data.

From the tool's definition The tool name 'outlook_find_meeting_times' combined with the description 'Find optimal meeting times for attendees' indicates a query/search operation. It retrieves calendar availability data without modifying or deleting anything.

Documented attack patterns abuse exactly the kind of access outlook_find_meeting_times gives an agent:

POLICY

How to control outlook_find_meeting_times

PolicyLayer is an MCP gateway — it sits between your AI agents and Outlook, and nothing reaches the server without passing your rules. This is the rule we recommend for outlook_find_meeting_times:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "outlook_find_meeting_times": {}
  }
}

outlook_find_meeting_times is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Outlook — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about outlook_find_meeting_times

What does the outlook_find_meeting_times tool do? +

Find optimal meeting times for attendees. It is categorised as a Read tool in the Outlook MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on outlook_find_meeting_times? +

Register the Outlook MCP server in PolicyLayer and add a rule for outlook_find_meeting_times: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Outlook. Nothing to install.

What risk level is outlook_find_meeting_times? +

outlook_find_meeting_times is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit outlook_find_meeting_times? +

Yes. Add a rate_limit block to the outlook_find_meeting_times rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block outlook_find_meeting_times completely? +

Set action: deny in the PolicyLayer policy for outlook_find_meeting_times. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides outlook_find_meeting_times? +

outlook_find_meeting_times is provided by the Outlook MCP server (xenoxilus/outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Outlook tool call.

Start from Outlook, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →