diff --git a/README.md b/README.md
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@@ -2,3 +2,10 @@ MoaiUtils
 =========
 
 Utilities for the Moai SDK
+
+At one point, MoaiUtils will become a collection of useful command-line utilities for people using the Moai SDK (http://getmoai.com/). For now, it consists of a single tool, CreateApiDescription.
+
+CreateApiDescription
+--------------------
+
+Given a local copy of the Moai source code, this tool will extract all kinds of information from the code and its comments. It will then generate a code-completion file for ZeroBrane Studio (http://studio.zerobrane.com/). Using this file, you'll get far superior code completion for Moai than with the built-in support. For command-line options, just call the executable without any arguments.
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