marvin_add_task · Amazing Marvin MCP Server MCP

WHAT IT DOES

What marvin_add_task does on Amazing Marvin MCP Server

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

WHY IT NEEDS A POLICY

Why marvin_add_task needs a policy

This tool creates new tasks in the Amazing Marvin task management system. Task creation is reversible (tasks can be deleted or modified), so it falls under Write rather than Destructive. Severity is medium because task creation in a productivity system has limited blast radius compared to financial or destructive operations, though bulk task creation could clutter a user's task list.

From the tool's definition Tool name 'marvin_add_task' indicates creation of a new task. The server description states it enables 'creating and organizing tasks' through natural language.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

marvin_add_task Rate-limited

marvin_add_task 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": {
    "marvin_add_task": {
      "limits": [
        {
          "counter": "marvin_add_task_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 Amazing Marvin MCP Server, so you can run agents against it safely.

FAQ

Questions about marvin_add_task

What does the marvin_add_task tool do? +

marvin_add_task. It is categorised as a Write tool in the Amazing Marvin 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 marvin_add_task? +

Register the Amazing Marvin MCP Server MCP server in PolicyLayer and add a rule for marvin_add_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 Amazing Marvin MCP Server. Nothing to install.

What risk level is marvin_add_task? +

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

Can I rate-limit marvin_add_task? +

Yes. Add a rate_limit block to the marvin_add_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 marvin_add_task completely? +

Set action: deny in the PolicyLayer policy for marvin_add_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 marvin_add_task? +

marvin_add_task is provided by the Amazing Marvin MCP Server MCP server (lucadeleo/amazing-marvin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.