API Parameters

The hierarchy parameter is required for each API request and can be specified as any of the following:

• the pkid of the hierarchy node in the form of a UUID, for example 1c055772c0deab00da595101
• in dot notation, for example ProviderName.CustomerName.LocationName

To obtain the pkid of a hierarchy node, refer to the path element in the metadata of data/HierarchyNode resource.

Note

For the purposes of simplifying the documentation, the hierarchy API parameter &hierarchy=[hierarchy] is not included in all examples in this document. Specifying the hierarchy is however required in all API requests where the instance pkid is not referenced. In the examples, [hierarchy] is substituted with the caller’s hierarchy id.

The system API supports the following request parameters for data format when handling requests.

Key	Description	Value
format	The format type of the body of the request	json

A request of the following format returns HTML:

GET /api/(str:model_type)/(str:model_name)/help/

A parameter &format=json is not displayed in all examples, but it is required for all requests unless a different format is specifically stated.

The Configuration Template can be specified in the POST request parameters for a resource as follows:

POST /api/(str:model_type)/(str:model_name)/&template_name=[CFG name]

Key	Description	Value
template	Apply the Configuration Template with pkid [CFG pkid] to the payload of the POST request.	[CFG pkid]
template_name	Apply the Configuration Template with name [CFG name] to the payload of the POST request.	[CFG name]

Field Display Policy can be specified in the GET request parameters for a resource as follows:

GET /api/(str:model_type)/(str:model_name)/add/

Key	Description	Value
policy	Return a model form schema where the Field Display Policy with pkid [FDP pkid] is applied to it. Use policy with the parameters schema and format=json.	[FDP pkid]
policy_name	Return a model form schema where the Field Display Policy with name [FDP name] is applied to it. Use policy with the parameters schema and format=json.	[FDP name]

The API can return cached data from the system or data from devices, using the following format:

GET /api/(str:model_type)/(str:model_name)/[pkid]/

Key	Description	Value	Default
cached	System will respond with resource information where the data was obtained from cache. (Functionally only applicable to device models and domain models containing device models)	true, false	true

Note

From 11.5.2 onwards, the API URL cached parameter on the Subscriber list (/api/relation/Subscriber/) will not be honoured. Data presented to the API will always display cached information and will not refresh the information from the device during a list query with cached=false.

To identify a single resource, the API call contains the single resource (pkid) using the following format:

GET /api/(str:model_type)/(str:model_name)/(pkid)/

To obtain the schema or schema rules of a resource, use the following parameters to an API request:

GET /api/(str:model_type)/(str:model_name)/?
  hierarchy=[hierarchy]&schema=true&schema_rules=true

Key	Description	Value
schema	Return the schema of the resource. Use with the parameter format=json	true, false
schema_rules	Return the GUI Rules and Field Display Policies of the resource if available. Use with the parameters format=json and schema to see schema_rules in the response.	true, false

The system API supports the following two tables of API request parameters when specifying the format of and structure of the resources to list.

• Pagination parameters

Key	Description	Value	Default
skip	The list resource offset. If the Range request header is used, it will override this parameter.		0
limit	The maximum number of resources returned. The maximum value is 2000. If the Range request header is used, it will override this parameter.	1-2000	50
count	Specify if the number of resources should be counted. If false, the pagination object in the response shows the total as 0, so no total is calculated and the API performance is improved.	true, false	true

• List format parameters

Key	Description	Value	Default
order_by	The summary attribute field to sort on		First summary attribute
direction	The direction of the summary attribute field sort (asc:ascending, desc: descending)	asc, desc	asc
summary	Only summary data is returned in the data object	true, false	true
traversal	The direction of the resource lookup of resources tied to the hierarchy tree from the hierarchy node provided as parameter	up, down, local	down

Note

From 11.5.2 onwards for api/relation/Subscriber:

• The API URL summary parameter on the Subscriber list (/api/relation/Subscriber/) will not be honoured. Data presented to the API will always display summarized information and will not display full CUCM User data with summary=false.
• The API parameter traversal=up on the Subscriber list (/api/relation/Subscriber/) will not be honoured. Data presented to the API will default to display resources down the hierarchy tree with traversal=up.

Models that have the list action defined in their schema can also be filtered by using a number of URL filter parameters in parameter sets of four key-value pairs.

Filters also apply to the api/tool/Transaction/ endpoint, which has additional filter functionality to filter by transaction ID. Refer to the topic on Filter Transactions.

These parameters can be added in addition to the parameters available to list resources as in the topic on API Parameters.

A single filter query can contains one or more sets of the following four parameters:

Key	Description	Value	Default
filter_field	The model attribute name to filter.	The name of the attribute in the list of summary_attrs in the model schema.
filter_condition	The matching operator for the filter_field. If equals is used in a condition, then other filter sets are ignored.	One of the conditions below, applied to a filter_text string value. startswith endswith contains notcontain equals notequal	contains
filter_text	A text string applied to the filter_field by a filter_condition.	Plain text
ignore_case	Additional specifier applied to the case of the filter_text.	Either true or false.	true

Example showing a single filter set:

GET /api/(str:model_type)/(str:model_name)/?
  hierarchy=[hierarchy]
  &filter_field=[attribute_name]
  &filter_condition=startswith
  &filter_text=John
  &ignore_case=false

Note

For relation/Subscriber, the list of filter_field values are restricted to:

• userid
• firstname
• lastname
• mailid
• hierarchy_friendly_name
• device
• extension_mobility
• phone

If more than one filter set is used, all similar keys are grouped, so that the key position indicates the filter set. For example:

GET /api/(str:model_type)/(str:model_name)/?
  hierarchy=[hierarchy]
  &filter_field=[attribute_name]
  &filter_field=[attribute_name2]
  &filter_condition=startswith
  &filter_condition=endswith
  &filter_text=John
  &filter_text=an
  &ignore_case=false
  &ignore_case=false

The two filter sets in this example, are:

• &filter_field=[attribute_name]
• &filter_condition=startswith
• &filter_text=John
• &ignore_case=false

and

• &filter_field=[attribute_name2]
• &filter_condition=endswith
• &filter_text=th
• &ignore_case=false

It is possible to submit mutator type operations with API parameters to complete synchronously, in which case the synchronous response to the transaction either includes the status of the transaction or a fault response. This is not recommended as long-running transactions or a busy system may exceed the HTTP timeout.

This is only available for models where the actions in the meta data contains support_async.

Key	Description	Value	Default
nowait	Controls the API synchronous or asynchronous behavior for requests resulting in transactions. Please refer to the support_async property in the model schema under meta -> actions, for an indication of support per action.	true, false	false

To specify a specific API version of a resource, use the following parameter to an API request:

GET /api/(str:model_type)/(str:model_name)/?
  hierarchy=[hierarchy]&api_version=<version_number>

Key	Description	Value
api_version	Return the the resource with api_version. Use with the parameter format=json	supported version no.

Where the parameters below are added to the GET call:

&schema=true
&format=json
&schema_rules=true

then the JSON schema meta property will contain schema_version in accordance with api_version=<version_number>.

For Unified CM device models, the schema_version will match the version of the Unified CM that corresponds with the api_version, for example:

GET /api/device/cucm/(str:model_name)/?
  hierarchy=[hierarchy]&
  schema=true&
  format=json&
  schema_rules=true&
  api_version=10.1.2

Returns:

"meta": {
         "tags": [],
         "cached": true,
         "title": "",
         "business_key": {},
         "schema_version": 10.0,

The following table shows the current mapping for /device/cucm models:

api_version	schema_version
10.1.2	10.0
10.6.1	10.5
10.6.2	10.5
10.6.3	10.5
11.5.1	11.5
11.5.2	11.5
11.5.3	11.5

If no api_version is specified in the GET call, then the default schema_version is determined by the latest entry in the mapping table.

• For more details on API versioning, refer to the topic on API Backwards compatibility.
• For API performance best practices, refer to the Performance Best Practices Guide.