authenticate_account · Todo MCP: Risk & Policy

WHAT IT DOES

What authenticate_account does on Todo

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

WHY IT NEEDS A POLICY

Why authenticate_account needs a policy

This tool writes sensitive data (authentication credentials) to storage. While not destructive or financial, storing auth tokens creates risk if mishandled (e.g., tokens stored in plaintext, or agent could authenticate malicious accounts).

From the tool's definition Tool description states 'Authenticate and store a Microsoft To Do account' — the 'store' action creates/modifies authentication credentials in persistent storage.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

authenticate_account Rate-limited

authenticate_account 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": {
    "authenticate_account": {
      "limits": [
        {
          "counter": "authenticate_account_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 Todo, so you can run agents against it safely.

FAQ

Questions about authenticate_account

What does the authenticate_account tool do? +

Authenticate and store a Microsoft To Do account. It is categorised as a Write tool in the Todo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on authenticate_account? +

Register the Todo MCP server in PolicyLayer and add a rule for authenticate_account: 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 Todo. Nothing to install.

What risk level is authenticate_account? +

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

Can I rate-limit authenticate_account? +

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

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

authenticate_account is provided by the Todo MCP server (jc1122/todo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.