PesaPI is an API for mobile money systems across Africa. Using PesaPI you can save considerable time and effort when integrating mobile money systems into your application, making it easy for your application to detect when a payment has been received. Full details on http://www.pesapi.com
A dedicated composer package of pesapi is still to be created - however you can still use pesapi with composer. Search the PesaPi mailing list for a description on how to do this.
Hi i would like to suggest a feature request .. the php version of pesaPi be added to packagist for easy dependency management with composer.