create_folder · Smokeball MCP: Risk & Policy

WHAT IT DOES

What create_folder does on Smokeball

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

WHY IT NEEDS A POLICY

Why create_folder needs a policy

This tool creates a new folder structure within a matter, which is a reversible write operation. It does not execute code, delete data, move money, or trigger external operations with unpredictable side effects. The blast radius of misuse is limited to creating unwanted folder hierarchies, which can be remedied by deletion. Confidence is high because the intent and behavior are explicit.

From the tool's definition Tool name is 'create_folder' and description states 'Create a folder in a matter', indicating data creation without destructive or financial consequences.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_folder Rate-limited

create_folder 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": {
    "create_folder": {
      "limits": [
        {
          "counter": "create_folder_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 Smokeball, so you can run agents against it safely.

FAQ

Questions about create_folder

What does the create_folder tool do? +

Create a folder in a matter. parent_folder_id: omit for root. It is categorised as a Write tool in the Smokeball MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_folder? +

Register the Smokeball MCP server in PolicyLayer and add a rule for create_folder: 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 Smokeball. Nothing to install.

What risk level is create_folder? +

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

Can I rate-limit create_folder? +

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

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

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