Hoiio Open API

Hoiio API provides developers with access to voice and SMS services.

Using Hoiio API, developers can

The benefit is that developers can now easily access traditional telephone network, without incurring hefty startup cost.

A simplified view on what Hoiio API does: alt text

How to use

We recommend that you read the Quick Start Guide first.

In less than 5 minutes, you would go through the process of creating a Hoiio app and making your first phone call via API request.

Read Quick Start Now

Thereafter, you are free to explore on your own. You could drill into any of the 6 API categories and use the API that is needed for your app.

You could use the SDKs to accelerate your development, or refer to the sample codes.

The APIs

Hoiio APIs are grouped into various main categories. You will find more details in each of the category.

  1. Voice API
  2. SMS API
  3. IVR API
  4. Fax API
  5. Number API
  6. Account API


Hoiio API adopts a simple pay-as-you-go pricing. You pay only for what you use.

There are 5 components to pricing:

  1. Voice calls (Outbound)
  2. Voice calls (Inbound)
  3. SMS (Outbound)
  4. SMS (Inbound)
  5. Number Subscription

Voice calls are charged on a per-minute basis, SMS on a per-message basis and numbers on a monthly basis.

Pricing varies by countries.

Refer to the full pricing page for the exact dollars and cents.