# Rigour (MCP server)

> Rigour is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Quality gates for AI agents. Lint, test, build checks with memory persistence. It has 27 GitHub stars, is released under the MIT license and runs locally with npx -y @rigour-labs/mcp.

Your AI agent writes the code. Rigour makes sure it's right before anyone has to review it. Coding agents are fast, and they make mistakes with confidence: an export nothing uses, a query that re-reads the whole table on every page, a fix that came back after the reviewer already flagged it. Today a human finds those at the pull request, round after round. Rigour checks the work while the agent is still writing, at the moments that matter, and the agent fixes it before anyone else has to look.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/rigour-labs/rigour |
| GitHub stars | 27 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @rigour-labs/mcp |
| Remote URL | none |
| Needs API key | no |
| Official | yes |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Developer tools |
| Latest release | v6.6.6 (Oct 6, 2026) |
| Last commit | Oct 7, 2026 |
| MCP registry name | io.github.rigour-labs/rigour |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "rigour": {
      "command": "npx",
      "args": [
        "-y",
        "@rigour-labs/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 rigour -- npx -y @rigour-labs/mcp
```

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

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

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

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

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

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

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