# LSP servers > Install, manage, and inspect LSP servers from the TUI. Mason-backed installer with 576+ packages, dual Neovim and standalone backends, no config edits. Empryo's code intelligence runs a full LSP layer. It ships a Mason-backed installer so you can add servers for any language from the TUI without touching your Neovim config. ## Commands ``` /lsp open the LSP manager (install, enable, disable) /lsp install search and install servers (Mason registry, 576+ packages) /lsp status attached servers with PID, language, capabilities /lsp restart restart all, or filter by language ``` ## What the agent uses Every [code intelligence](/docs/concepts/intelligence) operation tries LSP first: - Go-to-definition - Find references - Workspace-wide rename - Diagnostics (errors, warnings, info) - Code actions (quick fixes, refactors) - Call hierarchy (incoming and outgoing) - Type hierarchy (super and subtypes) - Hover and type info - Format document and format range No manual setup required. The agent picks the right tool automatically. ## Dual backend Empryo runs LSP in two modes, whichever is available: | Mode | When | |------|------| | **Neovim bridge** | Editor panel open. Routes through your running Neovim LSP clients. Zero warm-up cost. | | **Standalone** | Editor panel closed, or Neovim not installed. Empryo spawns LSP servers directly into `~/.empryo/lsp-servers/`. | Both cover the same capabilities. Standalone servers stay warm as hot standby even when Neovim is open. ## Supported languages Typical LSP coverage (any Mason package works): TypeScript, JavaScript, Python, Go, Rust, Java, Kotlin, Scala, C#, Swift, Dart, Elixir, OCaml, Lua, C, C++, Ruby, PHP, Zig, Bash, CSS, HTML, JSON, TOML, YAML, Dockerfile, Vue. Tree-sitter detection adds ReScript, Solidity, TLA+, Emacs Lisp, Objective-C, Nix, HCL/Terraform, Bazel/Starlark, Jsonnet, Makefile, GraphQL, Protobuf, SQL, Markdown, MDX, XML, and more. For anything LSP doesn't cover, the intelligence router falls through to ts-morph (TypeScript/JavaScript AST), tree-sitter, and regex. ## Mason installer `/lsp install` opens a fuzzy-search browser over Mason's registry. Pick a package, press enter, Empryo installs it: - **npm** packages to `~/.empryo/lsp-servers/node_modules/` - **pypi** via `pip3` - **cargo** via `cargo install` - **golang** via `go install` - **github** releases downloaded and extracted Already installed locally or via your Neovim's Mason? Empryo picks them up from the existing paths. ## Check health `/diagnose` runs a full check: tree-sitter, LSP readiness, semantic indexing, Genome status. Use it when something doesn't feel right.