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Adds a task, name, to the list specified by list_id.

If list_id is omitted, the task will be added to the Inbox.

If parse is 1, Smart Add will be used to process the task.

If parent_task_id is provided and the user has a Pro account, the new task is created as a sub-task, with the list of the parent_task_id taking priority over the provided list_id.


Available in versions 1 and 2.


This method requires authentication with write permissions.


This method requires a timeline.


api_key (Required) 1 2
Your API application key. See here for more details.
timeline (Required) 1 2
The timeline within which to run a method. See here for more details.
list_id 1 2
The id of the list to perform an action on.
name (Required) 1 2
The desired task name.
parse 1 2
Specifies whether to process name using Smart Add.
parent_task_id 2
Id of parent task if creating sub-task (Pro accounts only).

Example Response

<list id="987654321">
  <taskseries id="987654321" created="2015-05-07T10:19:54Z" modified="2015-05-07T10:19:54Z"
             name="Get Bananas" source="api">
    <task id="123456789" due="" has_due_time="0" added="2015-05-07T10:19:54Z"
         completed="" deleted="" priority="N" postponed="0" estimate=""/>

Error Codes

96 Invalid signature
The passed signature was invalid.
97 Missing signature
The call required signing but no signature was sent.
98 Login failed / Invalid auth token
The login details or auth token passed were invalid.
99 User not logged in / Insufficient permissions
The method requires user authentication but the user was not logged in, or the authenticated method call did not have the required permissions.
100 Invalid API Key
The API key passed was not valid or has expired.
105 Service currently unavailable
The requested service is temporarily unavailable.
114 Invalid SOAP envelope
The SOAP envelope sent in the request could not be parsed.
115 Invalid XML-RPC Method Call
The XML-RPC request document could not be parsed.
120 Method not valid for requested version
The requested method is not compatible with the requested version.
300 Timeline invalid or not provided
No timeline provided / Timeline invalid.
320 list_id invalid or not provided
No list_id provided / list_id invalid.
3040 List is read-only.
Tried to perform action in read-only list.
4000 Task name provided is invalid.
The task name provided is invalid.
4020 Cannot add task to a Smart List.
Cannot add task to a Smart List.
4040 Sub-task only editable by Pro accounts
Non-pro account tried to update sub-task.
4050 parent_task_id invalid
The parent_id provided is invalid.
4060 Sub-task nested too deep
Sub-tasks may only be nested up to 3 levels.
4070 Repeating task exists in hierarchy
Repeating sub-tasks may not have repeating ancestors and vice versa.