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synology-api

Name: Synology Api
Author: tympanix

// Synology Download Station Web API reference covering API discovery, authentication, request format, common errors, and Download Station task operations.

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stars:1,156

forks:95

updated:May 26, 2026 at 17:43

SKILL.md

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name	synology-api
description	Synology Download Station Web API reference covering API discovery, authentication, request format, common errors, and Download Station task operations.

Skill: Synology Download Station API

Purpose

Use this skill when you need to integrate with Synology DSM Download Station through its Web API.

Request format

All requests use /webapi/<CGI_PATH> with these core query parameters:

api=<API_NAME>
version=<VERSION>
method=<METHOD>
additional method-specific params
session via _sid=<SID> or cookie

General form:

GET /webapi/<CGI_PATH>?api=<API_NAME>&version=<VERSION>&method=<METHOD>[&<PARAMS>][&_sid=<SID>]

Response format

All responses are JSON objects with:

success: true or false
data: method result on success
error: integer error code on failure

Common error codes

Code	Meaning
100	Unknown error
101	Invalid parameter
102	Requested API does not exist
103	Requested method does not exist
104	Requested version does not support the functionality
105	Logged-in session does not have permission
106	Session timeout
107	Session interrupted by duplicate login

API discovery

Start with SYNO.API.Info.

fixed path: /webapi/query.cgi
query available APIs:

/webapi/query.cgi?api=SYNO.API.Info&version=1&method=query&query=ALL

Electorrent specifically needs:

SYNO.API.Auth
SYNO.DownloadStation.Task

Authentication

`SYNO.API.Auth`

path is discovered from SYNO.API.Info (commonly auth.cgi)
login:

/webapi/auth.cgi?api=SYNO.API.Auth&version=2&method=login&account=<user>&passwd=<pass>&session=DownloadStation&format=cookie

Important params:

account
passwd
session=DownloadStation
format=cookie or format=sid
optional otp_code

Logout:

/webapi/auth.cgi?api=SYNO.API.Auth&version=1&method=logout&session=DownloadStation

Auth-specific error codes:

Code	Meaning
400	No such account or incorrect password
401	Account disabled
402	Permission denied
403	2-step verification code required
404	Failed to authenticate 2-step verification code

Download Station API families

API	Purpose
`SYNO.DownloadStation.Info`	Package info and settings
`SYNO.DownloadStation.Schedule`	Schedule settings
`SYNO.DownloadStation.Task`	List tasks and perform task actions
`SYNO.DownloadStation.Statistic`	Total download/upload stats
`SYNO.DownloadStation.RSS.Site`	RSS site list/refresh
`SYNO.DownloadStation.RSS.Feed`	RSS feed list
`SYNO.DownloadStation.BTSearch`	BT search operations

`SYNO.DownloadStation.Task`

`list`

Request params:

offset optional, default 0
limit optional, default -1
additional optional comma-separated expansions:
- detail
- transfer
- file
- tracker
- peer

Example:

/webapi/DownloadStation/task.cgi?api=SYNO.DownloadStation.Task&version=1&method=list&additional=detail,file

Returns:

total
offset
tasks[]

Task objects include fields such as:

id
type
username
title
size
status
status_extra
optional additional.detail, additional.transfer, additional.file, additional.tracker, additional.peer

`getinfo`

Params:

id=dbid_001,dbid_002
optional additional=detail,transfer,file,tracker,peer

Returns tasks[].

`create`

Used to add downloads.

Params:

uri optional: HTTP / FTP / magnet / ED2K links, or shared-folder file paths
file optional: uploaded torrent/NZB payload
username optional
password optional
unzip_password optional
destination optional shared-folder-relative destination

This is typically a POST for uploads.

`delete`

Params:

id
force_complete

Returns per-task result objects containing:

id
error (0 means success)

`pause`

Params:

id

Returns per-task result objects with id and error.

`resume`

Params:

id

Returns per-task result objects with id and error.

`edit`

Commonly used to change destination.

Params:

id
destination

Returns per-task result objects with id and error.

Task error codes

Useful task-specific codes:

Code	Meaning
400	File upload failed
401	Max number of tasks reached
402	Destination denied
403	Destination does not exist
404	Invalid task id
405	Invalid task action
406	No default destination
407	Set destination failed
408	File does not exist

Electorrent usage

Electorrent uses:

SYNO.API.Info query for API discovery
SYNO.API.Auth login
SYNO.DownloadStation.Task.list
SYNO.DownloadStation.Task.create for URL and file uploads
SYNO.DownloadStation.Task.pause
SYNO.DownloadStation.Task.resume
SYNO.DownloadStation.Task.delete

Reference

https://global.download.synology.com/download/Document/Software/DeveloperGuide/Package/DownloadStation/All/enu/Synology_Download_Station_Web_API.pdf

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package.json

"author": "tympanix"

"repository": "tympanix/Electorrent"

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Software DevelopersComputer and Mathematical Occupations15-1252L4

name	synology-api
description	Synology Download Station Web API reference covering API discovery, authentication, request format, common errors, and Download Station task operations.

Skill: Synology Download Station API

Purpose

Use this skill when you need to integrate with Synology DSM Download Station through its Web API.

Request format

All requests use /webapi/<CGI_PATH> with these core query parameters:

api=<API_NAME>
version=<VERSION>
method=<METHOD>
additional method-specific params
session via _sid=<SID> or cookie

General form:

GET /webapi/<CGI_PATH>?api=<API_NAME>&version=<VERSION>&method=<METHOD>[&<PARAMS>][&_sid=<SID>]

Response format

All responses are JSON objects with:

success: true or false
data: method result on success
error: integer error code on failure

Common error codes

Code	Meaning
100	Unknown error
101	Invalid parameter
102	Requested API does not exist
103	Requested method does not exist
104	Requested version does not support the functionality
105	Logged-in session does not have permission
106	Session timeout
107	Session interrupted by duplicate login

API discovery

Start with SYNO.API.Info.

fixed path: /webapi/query.cgi
query available APIs:

/webapi/query.cgi?api=SYNO.API.Info&version=1&method=query&query=ALL

Electorrent specifically needs:

SYNO.API.Auth
SYNO.DownloadStation.Task

Authentication

`SYNO.API.Auth`

path is discovered from SYNO.API.Info (commonly auth.cgi)
login:

/webapi/auth.cgi?api=SYNO.API.Auth&version=2&method=login&account=<user>&passwd=<pass>&session=DownloadStation&format=cookie

Important params:

account
passwd
session=DownloadStation
format=cookie or format=sid
optional otp_code

Logout:

/webapi/auth.cgi?api=SYNO.API.Auth&version=1&method=logout&session=DownloadStation

Auth-specific error codes:

Code	Meaning
400	No such account or incorrect password
401	Account disabled
402	Permission denied
403	2-step verification code required
404	Failed to authenticate 2-step verification code

Download Station API families

API	Purpose
`SYNO.DownloadStation.Info`	Package info and settings
`SYNO.DownloadStation.Schedule`	Schedule settings
`SYNO.DownloadStation.Task`	List tasks and perform task actions
`SYNO.DownloadStation.Statistic`	Total download/upload stats
`SYNO.DownloadStation.RSS.Site`	RSS site list/refresh
`SYNO.DownloadStation.RSS.Feed`	RSS feed list
`SYNO.DownloadStation.BTSearch`	BT search operations

`SYNO.DownloadStation.Task`

`list`

Request params:

offset optional, default 0
limit optional, default -1
additional optional comma-separated expansions:
- detail
- transfer
- file
- tracker
- peer

Example:

/webapi/DownloadStation/task.cgi?api=SYNO.DownloadStation.Task&version=1&method=list&additional=detail,file

Returns:

total
offset
tasks[]

Task objects include fields such as:

id
type
username
title
size
status
status_extra
optional additional.detail, additional.transfer, additional.file, additional.tracker, additional.peer

`getinfo`

Params:

id=dbid_001,dbid_002
optional additional=detail,transfer,file,tracker,peer

Returns tasks[].

`create`

Used to add downloads.

Params:

uri optional: HTTP / FTP / magnet / ED2K links, or shared-folder file paths
file optional: uploaded torrent/NZB payload
username optional
password optional
unzip_password optional
destination optional shared-folder-relative destination

This is typically a POST for uploads.

`delete`

Params:

id
force_complete

Returns per-task result objects containing:

id
error (0 means success)

`pause`

Params:

id

Returns per-task result objects with id and error.

`resume`

Params:

id

Returns per-task result objects with id and error.

`edit`

Commonly used to change destination.

Params:

id
destination

Returns per-task result objects with id and error.

Task error codes

Useful task-specific codes:

Code	Meaning
400	File upload failed
401	Max number of tasks reached
402	Destination denied
403	Destination does not exist
404	Invalid task id
405	Invalid task action
406	No default destination
407	Set destination failed
408	File does not exist

Electorrent usage

Electorrent uses:

SYNO.API.Info query for API discovery
SYNO.API.Auth login
SYNO.DownloadStation.Task.list
SYNO.DownloadStation.Task.create for URL and file uploads
SYNO.DownloadStation.Task.pause
SYNO.DownloadStation.Task.resume
SYNO.DownloadStation.Task.delete

Reference

https://global.download.synology.com/download/Document/Software/DeveloperGuide/Package/DownloadStation/All/enu/Synology_Download_Station_Web_API.pdf

synology-api

Skill: Synology Download Station API

Purpose

Request format

Response format

Common error codes

API discovery

Authentication

SYNO.API.Auth

Download Station API families

SYNO.DownloadStation.Task

list

getinfo

create

delete

pause

resume

edit

Task error codes

Electorrent usage

Reference

More from this repository

More from this repository

Skill: Synology Download Station API

Purpose

Request format

Response format

Common error codes

API discovery

Authentication

SYNO.API.Auth

Download Station API families

SYNO.DownloadStation.Task

list

getinfo

create

delete

pause

resume

edit

Task error codes

Electorrent usage

Reference

`SYNO.API.Auth`

`SYNO.DownloadStation.Task`

`list`

`getinfo`

`create`

`delete`

`pause`

`resume`

`edit`

`SYNO.API.Auth`

`SYNO.DownloadStation.Task`

`list`

`getinfo`

`create`

`delete`

`pause`

`resume`

`edit`