# create_directory

Create a new directory or ensure a directory exists. Can create multiple

Agent View of the PolicyLayer registry record for `create_directory`. HTML page: https://policylayer.com/tools/a-niranjan-mcp-filesystem/create-directory

## Facts

- Tool: `create_directory`
- Server: MCP Filesystem Server (`a-niranjan/mcp-filesystem`) — https://policylayer.com/tools/a-niranjan-mcp-filesystem.md
- Homepage: https://github.com/A-Niranjan/mcp-filesystem
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "create_directory",
    "arguments": {}
  }
}
```

## Why create_directory is rated Medium

This tool creates new directories within the filesystem, which is a Write operation—data is created but can be reversed (directory can be deleted). It is not Destructive because directory creation is reversible.

From the tool's own definition: "Tool name 'create_directory' and description 'Create a new directory or ensure a directory exists' indicates reversible creation of filesystem structures."

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MCP Filesystem Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_directory": {
      "limits": [
        {
          "counter": "create_directory_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on MCP Filesystem Server (16)

- `bash_command` — Execute — https://policylayer.com/tools/a-niranjan-mcp-filesystem/bash-command.md
- `bash_execute` — Execute — https://policylayer.com/tools/a-niranjan-mcp-filesystem/bash-execute.md
- `bash_pipe` — Execute — https://policylayer.com/tools/a-niranjan-mcp-filesystem/bash-pipe.md
- `curl_request` — Execute — https://policylayer.com/tools/a-niranjan-mcp-filesystem/curl-request.md
- `execute_command` — Execute — https://policylayer.com/tools/a-niranjan-mcp-filesystem/execute-command.md
- `directory_tree` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/directory-tree.md
- `get_file_info` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/get-file-info.md
- `get_metrics` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/get-metrics.md
- `list_allowed_directories` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/list-allowed-directories.md
- `list_directory` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/list-directory.md
- `read_file` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/read-file.md
- `read_multiple_files` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/read-multiple-files.md
- `search_files` — Read — https://policylayer.com/tools/a-niranjan-mcp-filesystem/search-files.md
- `edit_file` — Write — https://policylayer.com/tools/a-niranjan-mcp-filesystem/edit-file.md
- `move_file` — Write — https://policylayer.com/tools/a-niranjan-mcp-filesystem/move-file.md
- `write_file` — Write — https://policylayer.com/tools/a-niranjan-mcp-filesystem/write-file.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=a-niranjan-mcp-filesystem · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a-niranjan-mcp-filesystem