mcp-synology-filestation

MCP server that exposes a Synology NAS FileStation as tools for Claude Desktop (and any other MCP client). All 26 tools are production-tested against DSM 7.x.

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Features

26 tools covering the full FileStation surface:

Group	Tools
Browse	list_shares, list_dir, get_info, check_exist, search
Transfer	download, upload, get_thumbnail
Organise	create_folder, rename, copy, move, delete, compress, extract
Analyse	dir_size, get_md5, check_permission
Sharing	create_sharing_link, list_sharing_links, delete_sharing_link
Favorites	list_favorites, add_favorite, delete_favorite
System	background_tasks, list_snapshots

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Requirements

• Python 3.12+
• uv (recommended) or pip
• Synology NAS running DSM 7.x with FileStation enabled
• A DSM user account with FileStation access

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Installation

From Gitea

uv tool install git+https://gitea.gecheckt.de/marcus/mcp-synology-filestation.git

Reinstall (upgrade)

uv tool install --reinstall git+https://gitea.gecheckt.de/marcus/mcp-synology-filestation.git

Windows / Claude Desktop: close Claude Desktop before reinstalling — Windows holds file locks on running executables.

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Setup

Run the interactive wizard once to configure the NAS connection and store credentials securely in the OS keyring:

mcp-synology-filestation setup

The wizard will:

1. Ask for your NAS host, port, and HTTPS settings
2. Ask for your DSM username and password (stored in OS keyring — never written to disk)
3. Handle 2FA / device token if required
4. Verify the FileStation API is reachable
5. Print a ready-to-paste Claude Desktop config snippet

Verify the setup

mcp-synology-filestation check

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Claude Desktop integration

Add the server to claude_desktop_config.json:

{
  "mcpServers": {
    "synology-filestation": {
      "command": "mcp-synology-filestation",
      "args": ["serve"]
    }
  }
}

The server uses stdio transport and is fully compatible with Claude Desktop on Windows, macOS, and Linux.

Environment variable overrides

Variable	Purpose
SYNOLOGY_HOST	Override NAS hostname
SYNOLOGY_USERNAME	Override DSM username
SYNOLOGY_PASSWORD	Override DSM password (not stored)

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Tool reference

Browse

list_shares

List all shared folders with volume usage (total / used / %).

list_dir

List a directory's contents with pagination and sorting.

Parameter	Default	Description
path	—	Share-relative path (e.g. /docker, /data/photos)
offset	0	Items to skip
limit	100	Max items (hard cap: 500)
sort_by	name	name | size | user | group | mtime | atime | crtime | type
sort_direction	asc	asc | desc

get_info

Detailed metadata (size, owner, permissions, timestamps) for one or more paths. Accepts comma-separated paths.

check_exist

Yes/No existence check for one or more comma-separated paths.

search

Glob-pattern search across a directory tree with async DSM polling.

Parameter	Default	Description
path	—	Root directory
pattern	—	Filename glob, e.g. *.log
recursive	true	Search subdirectories
max_results	200	Cap on returned matches

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Transfer

download

Download a file as base64-encoded content. Files > 10 MB are rejected. Returns JSON: {filename, size, content_base64}

upload

Upload base64-encoded content to the NAS. Files > 50 MB are rejected.

Parameter	Default	Description
path	—	Destination directory
filename	—	Name for the new file
content_base64	—	Base64-encoded bytes
overwrite	false	⚠ Overwrites existing file if true
create_parents	true	Create missing parent directories

get_thumbnail

Fetch a JPEG thumbnail for an image or video file.

Parameter	Default	Description
path	—	Share-relative file path
size	small	small | medium | large | original

Returns JSON: {filename, size_bytes, content_base64}. A "warning" field is added when the thumbnail exceeds ~500 KB base64. Thumbnails > ~2 MB base64 are rejected with an error — use size=small in that case.

Note: The DSM quality parameter has no effect — DSM ignores it. size=small is the default and recommended value; larger sizes can exceed MCP buffer limits.

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Organise

create_folder

Create a folder. Set create_parents=true to create intermediate directories.

rename

Rename a file or folder. new_name is a bare name (not a full path).

copy / move

Async copy or move. Default overwrite=false.

delete

Irreversible. Requires confirmed=true. Without it, returns a preview of what would be deleted — nothing is removed.

compress

Compress one or more paths into a ZIP or 7z archive (async DSM task).

Parameter	Default	Description
paths	—	List of source paths
dest_file_path	—	Output archive path including filename
level	moderate	store | fastest | fast | normal | moderate | maximum
format	zip	zip | 7z
password	""	Archive password

extract

Extract a ZIP or 7z archive to a destination folder (async DSM task).

Parameter	Default	Description
file_path	—	Archive path on NAS
dest_folder_path	—	Destination directory
overwrite	false	⚠ Overwrite existing files if true
keep_dir	true	Preserve directory structure
create_subfolder	false	Extract into a new subfolder
password	""	Archive password

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Analyse

dir_size

Total size, file count, and folder count for one or more directories (comma-separated).

get_md5

Compute the MD5 checksum of a file.

check_permission

Check whether the current DSM user can write a given filename into a directory.

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Sharing

create_sharing_link

Create a public sharing link with optional password and expiry date (YYYY-MM-DD).

list_sharing_links

Paginated table of all sharing links (ID, URL, path, owner, expiry, status).

delete_sharing_link

Delete a sharing link by its ID (from list_sharing_links).

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Favorites

list_favorites

List all FileStation user favorites (name, path, type, status, real path, modified).

add_favorite

Pin a path as a FileStation favorite with a display label.

delete_favorite

Remove a favorite by its path.

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System

background_tasks

Paginated list of active/recent FileStation background tasks (copy, move, delete, extract, compress) with type, status, path, and file progress.

Only the list method is available on DSM 7.x — tasks cannot be cancelled via this API.

list_snapshots

List Btrfs snapshots for a shared folder (snapshot ID, creation time, description, locked).

Requires a Btrfs-formatted volume. Returns a clear error on ext4/non-Btrfs shares ("requires Btrfs-formatted volume").

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Development

# Install with dev dependencies
uv sync --dev

# Format
uv run ruff format src/ tests/

# Lint
uv run ruff check src/ tests/

# Tests (113 tests)
uv run pytest

# Run server locally (stdio)
uv run mcp-synology-filestation serve

See CLAUDE.md for the full development context and SPEC.md for DSM API call details and quirks.

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Security

• Passwords are stored in the OS keyring only — never in the config file or logs.
• Session IDs and credentials are masked in all debug output.
• The delete tool requires explicit confirmed=true to prevent accidents.

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License

MIT