Filesystem MCP

A Model Context Protocol server that allows AI assistants to safely search, read, edit, and manage local files within user-specified directories. It includes safety features like blocking access to secret files and requiring confirmation for risky operations.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by j0hanz

Vendor documentation

What you can do with it

Find every TODO in a repo and group them by file
Rename a function across all .ts files and show the diff
Read the last 50 lines of a log file and explain the error
Move old screenshots into an archive folder

Source and maintenance

Community listingRegistry 2.18.4

mcp-registry: io.github.j0hanz/filesystem-mcp@2.18.4 Source repository Project website

Maintenance checked: Nov 6, 2026, 9:07 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

ghcr.io/j0hanz/filesystem-mcp:2.18.4

ocidocker

ghcr.io/j0hanz/filesystem-mcp:2.18.4 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/j0hanz/filesystem-mcp:2.18.4",
  "runtimeHint": "docker",
  "registryType": "oci",
  "packageArguments": [
    {
      "type": "positional",
      "value": "--read-only",
      "isRequired": true,
      "description": "Remove every tool that writes, to match the read-only mount."
    },
    {
      "type": "positional",
      "default": "/workspace",
      "valueHint": "/workspace",
      "isRequired": true,
      "description": "Container path of the mounted directory."
    }
  ],
  "runtimeArguments": [
    {
      "name": "-i",
      "type": "named",
      "format": "boolean",
      "isRequired": true,
      "description": "Keep stdin open for stdio transport."
    },
    {
      "name": "--rm",
      "type": "named",
      "format": "boolean",
      "isRequired": true,
      "description": "Remove the container on exit."
    },
    {
      "name": "-v",
      "type": "named",
      "value": "{host_dir}:/workspace:ro",
      "variables": {
        "host_dir": {
          "format": "filepath",
          "isRequired": true,
          "description": "Host directory path to expose to the server."
        }
      },
      "isRepeated": true,
      "isRequired": true,
      "description": "Mount the directory to expose to the server, read-only."
    }
  ],
  "environmentVariables": [
    {
      "name": "FS_ALLOWED_DIRS",
      "format": "string",
      "description": "Allowed directories inside the container, ':'-separated. Alternative to positional arguments."
    },
    {
      "name": "FS_READ_ONLY_DIRS",
      "format": "string",
      "description": "Read-only directories inside the container, ':'-separated. Writes, moves, and deletes under them are refused."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "filesystem-mcp-2-18-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "FS_ALLOWED_DIRS=<YOUR_FS_ALLOWED_DIRS>",
        "-e",
        "FS_READ_ONLY_DIRS=<YOUR_FS_READ_ONLY_DIRS>",
        "ghcr.io/j0hanz/filesystem-mcp:2.18.4",
        "--read-only"
      ],
      "env": {
        "FS_ALLOWED_DIRS": "<YOUR_FS_ALLOWED_DIRS>",
        "FS_READ_ONLY_DIRS": "<YOUR_FS_READ_ONLY_DIRS>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "filesystem-mcp-2-18-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "FS_ALLOWED_DIRS=<YOUR_FS_ALLOWED_DIRS>",
        "-e",
        "FS_READ_ONLY_DIRS=<YOUR_FS_READ_ONLY_DIRS>",
        "ghcr.io/j0hanz/filesystem-mcp:2.18.4",
        "--read-only"
      ],
      "env": {
        "FS_ALLOWED_DIRS": "<YOUR_FS_ALLOWED_DIRS>",
        "FS_READ_ONLY_DIRS": "<YOUR_FS_READ_ONLY_DIRS>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "filesystem-mcp-2-18-4": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "FS_ALLOWED_DIRS=<YOUR_FS_ALLOWED_DIRS>",
        "-e",
        "FS_READ_ONLY_DIRS=<YOUR_FS_READ_ONLY_DIRS>",
        "ghcr.io/j0hanz/filesystem-mcp:2.18.4",
        "--read-only"
      ],
      "env": {
        "FS_ALLOWED_DIRS": "<YOUR_FS_ALLOWED_DIRS>",
        "FS_READ_ONLY_DIRS": "<YOUR_FS_READ_ONLY_DIRS>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "filesystem-mcp-2-18-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "FS_ALLOWED_DIRS=<YOUR_FS_ALLOWED_DIRS>",
        "-e",
        "FS_READ_ONLY_DIRS=<YOUR_FS_READ_ONLY_DIRS>",
        "ghcr.io/j0hanz/filesystem-mcp:2.18.4",
        "--read-only"
      ],
      "env": {
        "FS_ALLOWED_DIRS": "<YOUR_FS_ALLOWED_DIRS>",
        "FS_READ_ONLY_DIRS": "<YOUR_FS_READ_ONLY_DIRS>"
      }
    }
  }
}

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