claudecron_run_task · Email MCP Server MCP: Risk & Policy

WHAT IT DOES

What claudecron_run_task does on Email MCP Server

AI agents invoke claudecron_run_task to trigger actions in Email MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why claudecron_run_task needs a policy

This tool executes a task whose outcome is not predetermined—it depends on what the scheduled task is configured to do. Task execution can trigger side effects ranging from sending emails to modifying data to calling external APIs. This qualifies as Execute rather than Write or Read.

From the tool's definition Tool name 'claudecron_run_task' with description 'Run a task immediately' indicates execution of an external operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

claudecron_run_task Rate-limited

claudecron_run_task stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "claudecron_run_task": {
      "limits": [
        {
          "counter": "claudecron_run_task_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about claudecron_run_task

What does the claudecron_run_task tool do? +

Run a task immediately. It is categorised as a Execute tool in the Email MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on claudecron_run_task? +

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

What risk level is claudecron_run_task? +

claudecron_run_task is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit claudecron_run_task? +

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

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

claudecron_run_task is provided by the Email MCP Server MCP server (sventern/mcp_email). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.