Use Robo 3T with Azure Cosmos DB's API for MongoDB
To connect to Cosmos account using Robo 3T, you must:
Connect using Robo 3T
To add your Cosmos account to the Robo 3T connection manager, perform the following steps:
Retrieve the connection information for your Cosmos account configured with Azure Cosmos DB's API MongoDB using the instructions here.
Click the connection button under File to manage your connections. Then, click Create in the MongoDB Connections window, which will open up the Connection Settings window.
In the Connection Settings window, choose a name. Then, find the Host and Port from your connection information in Step 1 and enter them into Address and Port, respectively.
On the Authentication tab, click Perform authentication. Then, enter your Database (default is Admin), User Name and Password. Both User Name and Password can be found in your connection information in Step 1.
On the SSL tab, check Use SSL protocol, then change the Authentication Method to Self-signed Certificate.
Finally, click Test to verify that you are able to connect, then Save.