The MindMeister API v2 is fully REST based and allows building applications that interact with MindMeister. Authorization is achieved with the common web standard OAuth 2.0.
The MindMeister API v1 is still available and consists of HTTP RPC-style methods. If possible please migrate your application to MindMeister API v2.
Embed the award-winnning MindMeister map editor into your web app and enable users to view and edit all popular mind map formats right in the browser.