Web API for Voice

Auto phone call making and control incoming calls as you like.


Make a phone call and playback audio files to your listeners when they answer with one easy API call.


Customize your phone calls according to number by using text-to-speech. Update your clients, remind them of appointments all with a simple API call.

Talk to multiple people at once on the phone, with just a simple API call. You can also implement anonymous calls between participants for privacy calls.

Local Caller ID Japan only

By default, restrictions in Japan does not allow you to use a local number as the caller ID. Our optional local caller ID functionality through our Dial In Numbers allows you to use a local Japan number for your voice calls.

We also have an API that allows you to check the status of your calls after they have been made. For real-time status of your calls, you can specify a callback URL and we'll send you the call's status to that URL the moment the call ends.

Dial In Numbers (DIN) are local numbers (DID) which you can subscribe and receive calls with. When a call is received at one of these numbers, we'll make a GET request to a URL you specify that will contain commands on how to process the call (i.e transfer it to another number, play a music file or say something using Text-to-Speech).

Voicemail can receive incoming calls and store the callers' messages. The recorded messages can be found in the inbox in your account page.

We have web APIs that allow you to manipulate the Dial In Numbers such as subscribe, set action URLs to be called when a call comes in and also unsubscribe numbers.

In general the DIN API service flow is as follows :
  • You search for an available number.
  • Once you find a number you like, you subscribe to that number and set an action URL.
  • Make the commands available via the action URL.
  • You can then receive calls on the DIN and process them.

For more details on the Voice and other related APIs

Voice Pricing

Prices are based on the recipient number which you will be calling to. Please note that prices may vary depending on the provider.

(Japan) From

10 credits / min

Local caller ID
(Japan) From

15 credits / min