fs_mkdirp · Mcp Ssh Tool MCP: Risk & Policy

WHAT IT DOES

What fs_mkdirp does on Mcp Ssh Tool

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

WHY IT NEEDS A POLICY

Why fs_mkdirp needs a policy

This tool creates new filesystem objects (directories), making it a Write operation rather than Read (which only retrieves data) or Execute (which runs arbitrary code). The severity is medium because while directory creation is reversible via deletion, unintended recursive directory creation could fill disk space or create unwanted directory hierarchies in production systems.

From the tool's definition fs_mkdirp creates directories recursively, which modifies the filesystem by adding new directory structures.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fs_mkdirp Rate-limited

fs_mkdirp 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": {
    "fs_mkdirp": {
      "limits": [
        {
          "counter": "fs_mkdirp_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 Ssh Tool, so you can run agents against it safely.

FAQ

Questions about fs_mkdirp

What does the fs_mkdirp tool do? +

Creates directories recursively. It is categorised as a Write tool in the Mcp Ssh Tool MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on fs_mkdirp? +

Register the Mcp Ssh Tool MCP server in PolicyLayer and add a rule for fs_mkdirp: 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 Ssh Tool. Nothing to install.

What risk level is fs_mkdirp? +

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

Can I rate-limit fs_mkdirp? +

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

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

fs_mkdirp is provided by the Mcp Ssh Tool MCP server (skot/mcp-ssh-tool). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.