> Utilizes language's AST to decide what to fetch into context,

Does that mean that it's only going to work with certain langauges for which it has parsers available?

It uses tree-sitter wasms. Currently, 14 languages are available (https://github.com/dirac-run/dirac/tree/master/src/services/...)

The agent would work even without a language parser, just that the AST-based functionalities won't work

Yes