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Claude Code LSPs

This repository contains a Claude Code marketplace with plugins that offer LSP servers for TypeScript, Rust, Python, Go, Java, Kotlin, C/C++, PHP, Ruby, C#, PowerShell, HTML/CSS, LaTeX, Julia, Vue, and BSL (1C:Enterprise). LSP servers provide powerful and familiar code intelligence features to IDEs, and now Claude Code directly.

Claude Code officially supports LSP. In 2.0.74 they officially added it to the changelog. Previously, the new LSP builtin tool had to be enabled manaually via $ENABLE_LSP_TOOL=1.

Claude can the LSP tool to

• Go to the definition for symbols (goToDefinition)
• Go to the implementation for symbols (goToImplementation)
• Hover over symbols (hover)
• List all the symbols in a file (documentSymbol)
• Find all references to a symbol (findReferences)
• Search for symbols across the workspace (workspaceSymbol)
• Get the call hierarchy for a given function (prepareCallHierarchy)
• Find all functions that call a given function (incomingCalls)
• Find all functions/methods called by a given function (outgoingCalls)

[!warning] Support for LSP in Claude Code is pretty raw still. There are bugs in the different LSP operations, no documention, and no UI indication that your LSP servers are started/running/have errors or even exist. But it's there, and with tweakcc you can make it work.

Patching Claude Code

Run npx tweakcc --apply. tweakcc automatically detects your Claude Code installation (npm or native) and applies the necessary patches. It will automatically patch your Claude Code installation to make CC's builtin LSP support usable. (It also does a bunch of other things like let you customize all the system prompt parts, create new CC themes, change the thinking verbs, and a lot more.)

Installing the plugins

Install them the usual way. First make CC aware of the marketplace:

1. Run claude
2. /plugin marketplace add Piebald-AI/claude-code-lsps

Then enable the plugins of your choice:

1. Run claude
2. Type /plugins
3. Tab to Marketplaces
4. Enter the claude-code-lsps marketplace and choose Browse plugins
5. Select the plugins you'd like with the spacebar (e.g. TypeScript, Rust)
6. Press "i" to install them
7. Restart Claude Code

Language-specific setup instructions

You need to install various components in order for the plugins to use them:

rustup component add rust-analyzer

# npm
npm install -g @vtsls/language-server typescript

# pnpm
pnpm install -g @vtsls/language-server typescript

# bun
bun install -g @vtsls/language-server typescript

# npm
npm install -g pyright

# pnpm
pnpm install -g pyright

# bun
bun install -g pyright