sendSystemEmailToAgent · Lofty MCP Server MCP: Risk & Policy

WHAT IT DOES

What sendSystemEmailToAgent does on Lofty MCP Server

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

WHY IT NEEDS A POLICY

Why sendSystemEmailToAgent needs a policy

This tool creates a new email artifact (reversible action—emails can be recalled or deleted in most systems) and sends it to an agent. It does not execute arbitrary code, delete data irreversibly, move money, or perform read-only retrieval.

From the tool's definition Tool name 'sendSystemEmailToAgent' and description 'Send a system email message to an agent' indicate the tool composes and dispatches an email message, which creates a new communication record.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendSystemEmailToAgent Rate-limited

sendSystemEmailToAgent 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": {
    "sendSystemEmailToAgent": {
      "limits": [
        {
          "counter": "sendsystememailtoagent_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 Lofty MCP Server, so you can run agents against it safely.

FAQ

Questions about sendSystemEmailToAgent

What does the sendSystemEmailToAgent tool do? +

Send a system email message to an agent. It is categorised as a Write tool in the Lofty 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 sendSystemEmailToAgent? +

Register the Lofty MCP Server MCP server in PolicyLayer and add a rule for sendSystemEmailToAgent: 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 Lofty MCP Server. Nothing to install.

What risk level is sendSystemEmailToAgent? +

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

Can I rate-limit sendSystemEmailToAgent? +

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

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

sendSystemEmailToAgent is provided by the Lofty MCP Server MCP server (nerdsnipe-inc/lofty-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.