kaleyra.io Reference APIs enable you to test the APIs in real time.
To test the API, perform the following steps:
- In the URL section (right pane), click the arrow next to Base URL and the list of base URLs appears.

- Select the base URL based on your region.
- In the SID field (left pane), enter the SID from your kaleyra.io account. For more information, see View API Key and SID.
- In the api-key field, enter the API key from your kaleyra.io account. For more information, see View API Key and SID.
- In the Content-Type field, you can either enter the content type or you can select the default content-type. To select the default content type, click the field and then select the Use example value.

- Click Try It! (right pane). The response appears based on your API request and entered details.
Note:
- For more information on Blocklist error codes, see Blocklist Error Codes.