manage_authentication_strengths

WHAT IT DOES

What manage_authentication_strengths does on Microsoft 365 Core MCP Server

AI agents use manage_authentication_strengths to create or update resources in Microsoft 365 Core MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Microsoft 365 Core MCP Server environment.

WHY IT NEEDS A POLICY

Why manage_authentication_strengths needs a policy

This tool modifies security policies that govern multi-factor authentication enforcement across Microsoft 365. While it includes read capabilities ('View'), the 'manage' operation allows creation/modification of authentication policies that directly impact organizational security posture. Misuse could weaken MFA requirements, disable strong authentication methods, or allow bypass of security controls.

From the tool's definition 'manage' indicates modification capability; 'authentication strength policies' are security-critical configurations that define MFA requirements in Conditional Access; the description explicitly states the tool both 'View and manage' these policies

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage_authentication_strengths Rate-limited

manage_authentication_strengths 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": {
    "manage_authentication_strengths": {
      "limits": [
        {
          "counter": "manage_authentication_strengths_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 Microsoft 365 Core MCP Server, so you can run agents against it safely.

FAQ

Questions about manage_authentication_strengths

What does the manage_authentication_strengths tool do? +

View and manage authentication strength policies that define which authentication methods satisfy MFA requirements in Conditional Access. It is categorised as a Write tool in the Microsoft 365 Core MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on manage_authentication_strengths? +

Register the Microsoft 365 Core MCP Server MCP server in PolicyLayer and add a rule for manage_authentication_strengths: 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 Microsoft 365 Core MCP Server. Nothing to install.

What risk level is manage_authentication_strengths? +

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

Can I rate-limit manage_authentication_strengths? +

Yes. Add a rate_limit block to the manage_authentication_strengths 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 manage_authentication_strengths completely? +

Set action: deny in the PolicyLayer policy for manage_authentication_strengths. 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 manage_authentication_strengths? +

manage_authentication_strengths is provided by the Microsoft 365 Core MCP Server MCP server (roycedamien/m365-core-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.