Jetbrains IDEs are a perfect solution for this. They expose IDE actions (e.g, search, see occurrences, go to implementation) in their MCP server, which the harnesses can then call directly instead of figuring out the code themselves.
Jetbrains IDEs are a perfect solution for this. They expose IDE actions (e.g, search, see occurrences, go to implementation) in their MCP server, which the harnesses can then call directly instead of figuring out the code themselves.
You would think, except in their own testing they found no benefit. Some measures it was even worse on.
https://blog.jetbrains.com/ai/2026/05/what-happens-when-you-...
I also found LSP like skills to usually have no advantage over rg. The agent needs to read the code to understand it; navigation is a small portion of that.