open-email · MCP-server MCP: Risk & Policy

WHAT IT DOES

What open-email does on MCP-server

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

WHY IT NEEDS A POLICY

Why open-email needs a policy

An AI agent can call open-email faster than any human can review — one bad instruction and it creates or modifies resources in MCP-server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

open-email Rate-limited

open-email 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": {
    "open-email": {
      "limits": [
        {
          "counter": "open-email_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-server, so you can run agents against it safely.

FAQ

Questions about open-email

What does the open-email tool do? +

Open email in browser. It is categorised as a Write tool in the 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 open-email? +

Register the MCP-server MCP server in PolicyLayer and add a rule for open-email: 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-server. Nothing to install.

What risk level is open-email? +

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

Can I rate-limit open-email? +

Yes. Add a rate_limit block to the open-email 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 open-email completely? +

Set action: deny in the PolicyLayer policy for open-email. 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 open-email? +

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

// THE FULL RECORD

open-email is one line of MCP-server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →