complete-task · Outlook Assistant MCP: Risk & Policy

WHAT IT DOES

What complete-task does on Outlook Assistant

AI agents use complete-task to create or update resources in Outlook Assistant — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Outlook Assistant environment.

WHY IT NEEDS A POLICY

Why complete-task needs a policy

The tool updates a task record by changing its completion status. This is a reversible state change (tasks can be marked incomplete again) rather than irreversible deletion, so it does not qualify as Destructive. It involves data modification but no code execution, external operations, or financial impact, making it Write rather than Execute or Financial.

From the tool's definition Tool description: 'Marks a task as completed' — this modifies the state of an existing task item in Outlook.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

complete-task Rate-limited

complete-task stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "complete-task": {
      "limits": [
        {
          "counter": "complete-task_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Outlook Assistant, so you can run agents against it safely.

FAQ

Questions about complete-task

What does the complete-task tool do? +

Marks a task as completed. It is categorised as a Write tool in the Outlook Assistant MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on complete-task? +

Register the Outlook Assistant MCP server in PolicyLayer and add a rule for complete-task: 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 Assistant. Nothing to install.

What risk level is complete-task? +

complete-task is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit complete-task? +

Yes. Add a rate_limit block to the complete-task 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 complete-task completely? +

Set action: deny in the PolicyLayer policy for complete-task. 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 complete-task? +

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