LSP Server

R

R language server providing code intelligence for R — diagnostics, go-to-definition, find references, hover documentation, and completion for .R and .r files.

backend

Requires Language Server Binary

This LSP server requires Rto be installed on your system. Make sure it's available in your PATH before enabling.

Add to Your Project

Copy this JSON into your .lsp.json to enable this server

Add to your .lsp.json or plugin.json:

{
  "lspServers": {
    "R": {
      "command": "R",
      "extensionToLanguage": {
        ".R": "R",
        ".r": "R"
      },
      "args": [
        "--no-echo",
        "-e",
        "languageserver::run()"
      ],
      "env": {
        "R_PROFILE_USER": "${CLAUDE_PLUGIN_ROOT}/config/agent.Rprofile"
      }
    }
  }
}

Supported Languages

File extensions mapped to language identifiers

.R.r

Details

Server configuration and transport parameters

CommandR

Transportstdio

Arguments

Command-line arguments passed to the server process

--no-echo-elanguageserver::run()

Environment Variables

Environment variables set when the server starts

R_PROFILE_USER=${CLAUDE_PLUGIN_ROOT}/config/agent.Rprofile

Advanced Configuration

Initialization options and workspace settings

Restart on Crash:Yes

Settings:

{
  "lint_cache": true,
  "diagnostics_cache_ttl": 15
}

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LanguageShell

Stars12

Forks2

MaintenanceExcellent

Last CommitJul 10, 2026

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