Adding capacity calculator API availability

Author: SnehaGunda

articles/cosmos-db/plan-manage-costs.md

@@ -41,7 +41,9 @@ As an aid for estimating costs, it can be helpful to do capacity planning for a
 
 ### Estimate provisioned throughput costs
 
-If you plan to use Azure Cosmos DB in provisioned throughput mode, use the [Azure Cosmos DB capacity calculator](https://cosmos.azure.com/capacitycalculator/) to estimate costs before you create the resources in an Azure Cosmos account. The capacity calculator is used to get an estimate of the required throughput and cost of your workload. Configuring your Azure Cosmos databases and containers with the right amount of provisioned throughput, or [Request Units (RU/s)](request-units.md), for your workload is essential to optimize the cost and performance. You have to input details such as API type, number of regions, item size, read/write requests per second, total data stored to get a cost estimate. To learn more about the capacity calculator, see the [estimate](estimate-ru-with-capacity-planner.md) article.
+If you plan to use Azure Cosmos DB in provisioned throughput mode, use the [Azure Cosmos DB capacity calculator](https://cosmos.azure.com/capacitycalculator/) to estimate costs before you create the resources in an Azure Cosmos account. The capacity calculator is used to get an estimate of the required throughput and cost of your workload. The capacity calculator is currently available for SQL API, Cassandra API, and API for MongoDB only.
+
+Configuring your Azure Cosmos databases and containers with the right amount of provisioned throughput, or [Request Units (RU/s)](request-units.md), for your workload is essential to optimize the cost and performance. You have to input details such as API type, number of regions, item size, read/write requests per second, total data stored to get a cost estimate. To learn more about the capacity calculator, see the [estimate](estimate-ru-with-capacity-planner.md) article.
 
 The following screenshot shows the throughput and cost estimation by using the capacity calculator: