The Development Tools module provides a basis for creating plugin's to interact with a running Magnolia instance. Using the endpoints provided by this module you can create interactive IDEs with intellisense features to help facilitate the development process.
The source for this module can be found here: https://git.magnolia-cms.com/projects/FORGE/repos/development-tools/browse
Issues, Bugs, Improvements
Either comment on this page or open a ticket here: DEVTOOLS