The objective of this project is to create a tool, JuezLTI, that allows the automatic assessment of exercises for which there is currently no tool (e.g. markup languages), as well as another kind of computer exercises (programming and databases). The other innovation that the tool raises is its interoperability with any online learning environment (LMS) such as Moodle, Sakai, Canvas or Blackboard (among many others) thanks to the use of the LTI standard. This, added to the pool of exercises to be developed, will allow it to be used and implemented in a large number of institutions, some of which have shown interest and explicit support for the project.