Plugin Official

rust-analyzer LSP

Rust language server for Claude Code: code intelligence and diagnostics for .rs files.

Author: Anthropic
Works with: Claude Code
License: Apache-2.0
Documented: Oct 2, 2026

What rust-analyzer LSP is

rust-analyzer-lsp connects the Rust language server to Claude Code, giving it code intelligence and diagnostics for rs files. The plugin only wires up the server; the server binary must be installed separately.

What it does

Where rust-analyzer LSP runs and what it adds, from its documentation

Registers the rust-analyzer language server (command: rust-analyzer) via the marketplace lspServers entry
Maps file extensions to the language: .rs
Gives Claude Code code intelligence and diagnostics for Rust projects

When to use it

Good fit

Working in a Rust codebase where Claude Code should use real language-server analysis
Wanting diagnostics and navigation from rust-analyzer without leaving Claude Code

Not for

Projects in other languages (it only maps the extensions listed)
Setups where you cannot install the rust-analyzer binary on PATH

How to install rust-analyzer LSP

You need: Claude Code; rust-analyzer binary on PATH

Install the language server binary first (the plugin does not bundle it):
rustup component add rust-analyzer (recommended)
Or macOS: brew install rust-analyzer; Ubuntu/Debian: sudo apt install rust-analyzer; Arch: sudo pacman -S rust-analyzer
Or download pre-built binaries from the rust-analyzer releases page
Install the plugin: /plugin install rust-analyzer-lsp@claude-plugins-official

Permissions and security

What it can access

Launches the rust-analyzer process locally and reads the project files it analyzes

Security notes from the maintainers

Marketplace README: make sure you trust a plugin before installing, updating, or using it

Review the source before granting an agent access to credentials or production systems. We document what the maintainers state; we do not audit code.

Limitations

Requires the language server to be installed separately; the plugin does not install it

Tools it extends

Coding

Claude Code

Web · Desktop

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Anthropic's agentic coding tool that reads your codebase, edits files and runs commands from the terminal, IDEs, desktop app or browser.

Watch out: Not included in the Free Claude plan, and usage on subscriptions is capped by plan limits.

Listed Not yet reviewed

Verified Sep 29, 2026 code.claude.com (opens Claude Code website in a new tab)

From $20/mo US · checked Sep 29

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Frequently asked questions

How do I install the rust-analyzer-lsp plugin for Claude Code?

Install the language server first, then run /plugin install rust-analyzer-lsp@claude-plugins-official. source

Which file extensions does the rust-analyzer-lsp plugin support?

.rs. source

Does the rust-analyzer-lsp plugin install rust-analyzer for me?

No. The README lists install commands for the server itself; the plugin only registers it with Claude Code. source

Related guides

Claude Code plugins and marketplace: 40 profiled in 2026

Sources and gaps

https://raw.githubusercontent.com/anthropics/claude-plugins-official/main/plugins/rust-analyzer-lsp/README.md readme, checked Oct 2, 2026
https://raw.githubusercontent.com/anthropics/claude-plugins-official/main/.claude-plugin/marketplace.json registry, checked Oct 2, 2026
https://raw.githubusercontent.com/anthropics/claude-plugins-official/main/README.md readme, checked Oct 2, 2026
https://rust-analyzer.github.io/ docs, checked Oct 2, 2026

Not stated by the maintainers: last_release not visible.