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Use Dynamics WebAPI to get Record Count When working in an environment where tools like XrmToolbox are not available or allowed getting a total record count can be a real pain sometimes. One way of doing it just using the browser involves using the Dynamics WebAPI. This came in handy last time we were doing a data load on our production system and wanted to see the status of how many records had been imported. Small Data Set ( < 5k) If you are trying to get the count for 5,000 or less records. you can do a simple count on the data. Format /api/data/v9.0/<Entity Set Name>/?$count=true Example /api/data/v9.0/contacts/?$count=true Data Returned {"@odata.context":"https://org.crm.dynamics.com/api/data/v9.0/$metadata#contacts", "@odata.count":3 ,"value": Large Data Set ( > 5k & < 50k) If your record set will have 5k or more you can utilize the webapi by creating a FetchXml aggregate query, this does have a limitation of

Use Dynamics WebAPI to get LogicalName or ObjectTypeCode for Entity If you need to get the LogicalName or ObjectTypeCode of an entity in your Dynamics environment you can utilize the WebAPI to get the metadata. If you have the LogicalName of the entity you can use this url. Format: <Dynamics Url>/api/data/v<Version>/EntityDefinitions(LogicalName='<LogicalName>')?$select=ObjectTypeCode Example: https://org12345.crm.dynamics.com/api/data/v9.0/EntityDefinitions(LogicalName='account')?$select=ObjectTypeCode Data Returned: {"@odata.context":"https://org6744e6cd.crm.dynamics.com/api/data/v9.0/$metadata#EntityDefinitions(ObjectTypeCode)/$entity","ObjectTypeCode":1,"MetadataId":"70816501-edb9-4740-a16c-6a5efbc05d84"} If you have the ObjectTypeCode of the entity you can use this url. Format: <Dynamics Url>/api/data/v<Version>/EntityDefinitions?$filter=ObjectTypeCode eq <ObjectTypeCode