Inside a Neovim terminal, the $NVIM environment variable points to the parent Neovim’s Unix socket. This means you can query editor state, inspect buffers, check LSP diagnostics, and even send commands — all through Neovim’s msgpack-RPC API. What’s quite neat here is that since I run Claude Code inside a Neovim terminal window, I can make Claude use this API to query and hook into the running Neovim session and much more easily debug issues with my Neovim config, develop plugins, or help with something inside Neovim.