Access Rest API using Postman in SharePoint Online/2013/2016

In this Rest API tutorial, we will discuss how to access Rest API using Postman in SharePoint Online or SharePoint 2013/2016/2019. Postman is one of the best tools which is used for API testing. In SharePoint, you can use Postman to check Rest API endpoints.

Access Rest API using Postman in SharePoint

Hi, techies today we’ll discuss how to test and perform basic operation’s in REST API’s for SharePoint using a powerful and user-friendly tool POSTMAN. This will work for SharePoint 2016/2013 or SharePoint Online sites. Primarily, we need to get it installed from this below link.

Once installed it will then add it to the Chrome Launcher which is great for easy access. Once you have it installed we can launch it and should be presented with the following:

SharePoint 2013 adds the ability for you to remotely interact with SharePoint sites by using REST. Now, you can interact directly with SharePoint objects by using any technology that supports standard REST capabilities.

To access SharePoint resources using REST, construct a RESTful HTTP request, using the Open Data Protocol (OData) standard, which corresponds to the desired client object model API. For example:

We can perform the below operation in Postman

GET– Use GET to retrieve data from SharePoint like list, list items, etc.

POST – Use POST to create entities such as lists and sites. The SharePoint 2013 REST service supports sending POST commands that include object definitions to endpoints that represent collections.

For POST operations, any properties that are not required are set to their default values. If you attempt to set a read-only property as part of a POST operation, the service returns an exception.

PUT– Use PUT and MERGE operations to update existing SharePoint objects.
Any service endpoint that represents an object property set operation supports both PUT requests and MERGE requests.

For MERGE requests, setting properties is optional; any properties that you do not explicitly set retain their current property.

For PUT requests, if you do not specify all required properties in object updates, the REST service returns an exception. In addition, any optional properties you do not explicitly set are set to their default properties.

DELETE– Use the HTTP DELETE command against the specific endpoint URL to delete the SharePoint object represented by that endpoint. In the case of recyclable objects, such as lists, files, and list items, this results in a Recycle operation.

Check How to clear SharePoint cache

Get the site Title:

https://<tenantname>.sharepoint.com/sites/Bhawana/_api/web/title

Get particular list data:

https://<tenantname>.sharepoint.com/sites/Bhawana/_api/lists/getbytitle('Bhawana_Practice')/items

Get all the Lists:

https://<tenantname>.sharepoint.com/sites/Bhawana/_api/lists

Create a SharePoint LIST using below Json:

{
'_metadata':{'type':SP.List},
'AllowContentTypes': true,
'BaseTemplate': 104,
'ContentTypesEnabled': true,
'Description': 'My list description',
'Title': 'RestTest'
}

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This tutorial explains, how to use Postman tool to test Rest API in SharePoint Online or SharePoint 2013/2016. We saw how we can do GET, POST, MERGE, PUT, DELETE, etc. operations in SharePoint using Postman.