claude-languages

Claude Languages

LSP language servers for Claude Code — code completion, diagnostics, hover, and go-to-definition for every language you work in.

Language servers extend what Claude understands — not just what it can do. Install a language plugin and Claude gains deep code intelligence: real-time errors, symbol navigation, and context-aware completions, powered by the same LSP servers your editor uses.

How Language Servers Work

Each plugin bundles an LSP (Language Server Protocol) server that Claude Code connects to as an external process. Once installed, Claude gains deep code intelligence for that language — the same completions, diagnostics, and navigation your editor uses.

Capability	What it gives Claude
Completions	Context-aware symbol and method suggestions
Diagnostics	Real-time type errors, lint warnings, undefined references
Hover	Type signatures and documentation on demand
Go-to-definition	Navigate to declarations across the codebase

Requirements

• Claude Code (claude)

The individual language servers (gopls, rust-analyzer, terraform-ls) are downloaded and installed automatically by the plugin — no manual setup required.

Install claude separately: Claude Code installation guide

Quickstart

1. Register the marketplace in ~/.claude/settings.json:

{
  "extraKnownMarketplaces": {
    "claude-languages": {
      "source": {
        "source": "github",
        "repo": "claude-contrib/claude-languages"
      }
    }
  }
}

2. Install a language server inside Claude Code:

/plugin install golang@claude-languages

Claude now has Go language intelligence available in every session.

Available Language Servers

Plugin	Language	Powered by	Description
golang	Go	gopls	Official Go language server by the Go team
rust	Rust	rust-analyzer	Official Rust language server
terraform	Terraform / HCL	terraform-ls	Official Terraform language server by HashiCorp

Publish Your Own Language Server

Have an LSP server your team relies on? Package it for one-command install:

plugins/your-language/
├── .claude-plugin/plugin.json   # name, version, description
├── .lsp.json                    # server command + args + file extension mapping
└── README.md                   # what it unlocks + install instructions

1. Fork this repo and drop your plugin under plugins/
2. Register it in .claude-plugin/marketplace.json
3. Open a PR — CI validates structure automatically

→ Read the full authoring guide

The claude-contrib Ecosystem

Repo	What it provides
claude-extensions	Hooks, context rules, session automation
claude-features	Devcontainer features for Claude Code and Anthropic tools
claude-languages ← you are here	LSP language servers — completions, diagnostics, hover
claude-sandbox	Sandboxed Docker environment for Claude Code
claude-services	MCP servers — browser, filesystem, sequential thinking
claude-skills	Slash commands for Claude Code
claude-status	Live status line — context, cost, model, branch, worktree

License

MIT — use it, fork it, extend it.