remove_flags · MCP Mail Organizer MCP: Risk & Policy

WHAT IT DOES

What remove_flags does on MCP Mail Organizer

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

WHY IT NEEDS A POLICY

Why remove_flags needs a policy

Removing flags (e.g., seen, flagged, answered) modifies email metadata but is reversible since flags can be re-added. This is a Write operation. Misuse could cause organizational confusion (e.g., marking emails as unread en masse), hence medium severity.

From the tool's definition 'Remove flags from emails' - modifies flag state on emails reversibly

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

remove_flags Rate-limited

remove_flags 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": {
    "remove_flags": {
      "limits": [
        {
          "counter": "remove_flags_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 MCP Mail Organizer, so you can run agents against it safely.

FAQ

Questions about remove_flags

What does the remove_flags tool do? +

Remove flags from emails. It is categorised as a Write tool in the MCP Mail Organizer MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on remove_flags? +

Register the MCP Mail Organizer MCP server in PolicyLayer and add a rule for remove_flags: 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 MCP Mail Organizer. Nothing to install.

What risk level is remove_flags? +

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

Can I rate-limit remove_flags? +

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

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

remove_flags is provided by the MCP Mail Organizer MCP server (neomody77/mcp-mail-organizer). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.