# Bitbybit CAD MCP server

> Lets AI coding agents look up Bitbybit's version-exact 3D parametric CAD API functions, parameters, examples and guides.

- Repository: https://github.com/bitbybit-dev/bitbybit
- Page: https://hostedmcp.org/servers/bitbybit-dev/cad
- Official: yes
- Transport: stdio, remote
- Stars: 211
- License: MIT
- Latest version: 1.6.2

## Install

### Claude Code

```sh
claude mcp add cad -- npx -y @bitbybit-dev/mcp
```

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

```json
{
  "mcpServers": {
    "cad": {
      "command": "npx",
      "args": [
        "-y",
        "@bitbybit-dev/mcp"
      ]
    }
  }
}
```

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

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

### Claude Desktop (`claude_desktop_config.json`)

```json
{
  "mcpServers": {
    "cad": {
      "command": "npx",
      "args": [
        "-y",
        "@bitbybit-dev/mcp"
      ]
    }
  }
}
```

### Codex (`~/.codex/config.toml`)

```toml
[mcp_servers.cad]
command = "npx"
args = ["-y", "@bitbybit-dev/mcp"]
```

### Gemini CLI (`~/.gemini/settings.json`)

```json
{
  "mcpServers": {
    "cad": {
      "command": "npx",
      "args": [
        "-y",
        "@bitbybit-dev/mcp"
      ]
    }
  }
}
```

## Tools (5)

- `search_api`
- `describe`
- `list_namespace`
- `get_examples`
- `get_guide`

## FAQ

### Which API version does the server document?

It can be pinned with a --version flag or BITBYBIT_VERSION environment variable, otherwise it detects the version of installed @bitbybit-dev packages, falling back to its own release version.

### What tools does the Bitbybit CAD MCP server provide?

It offers search_api, describe, list_namespace, get_examples, get_guide, plus search and fetch for ChatGPT connectors. All tools are read-only.

### Does the Bitbybit CAD MCP server run geometry?

No, it only answers questions about the API. To actually produce geometry, connect the companion Bitbybit CAD Cloud MCP with a CAD Cloud API key.

### Does it need an API key?

No, the documentation server is free and MIT-licensed. Only the companion CAD Cloud MCP server for running geometry needs a CAD Cloud API key.