AT&T said that it added “almost 12,000” members to its Developer Program during 2012, taking its total to 31,000, as it updated its propositions for partners.

The US operator introduced a new Alpha API Program, which is designed to “bring innovative APIs to market quicker through increased collaboration and openness with the developer community”.

The programme is intended to enable developers to offer ideas for new APIs, which will be sponsored into Alpha from third parties to “increase collaboration and innovation”.

Examples already available on a “proof of concept” basis include a text-to-text translation API to enable emails and messages to be automatically translated between Spanish and English, and a customer profile API which will enable forms to be automatically completed with subscriber details.

The company also announced a call management API, powered by Voxeo Labs’ Tropo Platform and Ericsson’s IMS Innovation Platform, which is based on WebRTC and will enable browsers to conduct real-time communications, such as voice calling or video chats.

AT&T also unveiled some enhancements to its API platform, including a $99 yearly charge for up to one million API calls per month, and availability of existing APIs through developer toolsets including Microsoft Visual Studio, Salesforce Platform, IBM Worklight, Appcelerator Titanium and Adobe PhoneGap.

It also plans to introduce an advertising API in the first quarter, which will see developers offered 80 percent of the revenue generated as an “introductory revenue share”.

The company made the comments at its AT&T Developer Summit, held in Las Vegas this week to coincide with the 2013 International CES event.