# flowR (MCP server)

> flowR is an MCP server that adds database tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Static dataflow analysis, program slicing, linting, and dependency extraction for R code. It has 105 GitHub stars, is released under the GPL-3.0 license and runs locally with npx -y @eagleoutice/flowr-mcp.

A Model Context Protocol server with a single query tool that lets LLM clients analyze R code with flowR: slicing, linting, dependencies, version guessing, signature database search, and every other query of the Query API. No R installation is needed.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/flowr-analysis/flowr |
| GitHub stars | 105 |
| License | GPL-3.0 |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @eagleoutice/flowr-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Databases |
| Latest release | v2.16.6 (Oct 22, 2026) |
| Last commit | Oct 25, 2026 |
| MCP registry name | io.github.flowr-analysis/flowr |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "flowr": {
      "command": "npx",
      "args": [
        "-y",
        "@eagleoutice/flowr-mcp"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio flowr -- npx -y @eagleoutice/flowr-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "flowr": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@eagleoutice/flowr-mcp"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "flowr": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@eagleoutice/flowr-mcp"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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