generate_email_reply · MCP Remote Server MCP: Risk & Policy

WHAT IT DOES

What generate_email_reply does on MCP Remote Server

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

WHY IT NEEDS A POLICY

Why generate_email_reply needs a policy

The tool appears to create or compose an email reply, which constitutes data modification (Write category). Severity is medium because email generation could be misused to send deceptive or unauthorized communications, but the actual sending is not explicit in the name—only generation/composition. Without an explicit description, confidence is reduced from high to medium-high.

From the tool's definition Tool name 'generate_email_reply' in context of an email service (Gmail integration indicated by sibling tool 'fetch_unread_emails' and 'analyze_email_with_ai'). Description is empty, limiting direct evidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_email_reply Rate-limited

generate_email_reply 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": {
    "generate_email_reply": {
      "limits": [
        {
          "counter": "generate_email_reply_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about generate_email_reply

What does the generate_email_reply tool do? +

generate_email_reply. It is categorised as a Write tool in the MCP Remote 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 generate_email_reply? +

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

What risk level is generate_email_reply? +

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

Can I rate-limit generate_email_reply? +

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

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

generate_email_reply is provided by the MCP Remote Server MCP server (sunnylabtv-crypto/ai_mcp_fastmcp_remote-public). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.