Returns a tree (or sub tree) of collections belonging to a given user. Note that the response values of `iconlarge` and `iconsmall` are defunct and will now return empty mosaic grids. For more information on how to use the new style of collection mosaics, go here.


This method does not require authentication.


api_key (Required)
Your API application key. See here for more details.
collection_id (Optional)
The ID of the collection to fetch a tree for, or zero to fetch the root collection. Defaults to zero.
user_id (Optional)
The ID of the account to fetch the collection tree for. Defaults to the calling user.

Example Response

  <collection id="12-72157594586579649" title="All My Photos" description="a collection" iconlarge="" iconsmall="">
    <set id="92157594171298291" title="kitesurfing" description="a set" />
    <set id="72157594247596158" title="faves" description="some favorites." />
A nested tree of collections, and the collections and sets they contain.

Error Codes

1: User not found
The specified user could not be found.
2: Collection not found
The specified collection does not exist.
100: Invalid API Key
The API key passed was not valid or has expired.
105: Service currently unavailable
The requested service is temporarily unavailable.
106: Write operation failed
The requested operation failed due to a temporary issue.
111: Format "xxx" not found
The requested response format was not found.
112: Method "xxx" not found
The requested method was not found.
114: Invalid SOAP envelope
The SOAP envelope send in the request could not be parsed.
115: Invalid XML-RPC Method Call
The XML-RPC request document could not be parsed.
116: Bad URL found
One or more arguments contained a URL that has been used for abuse on Flickr.

API Explorer

API Explorer : flickr.collections.getTree