> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/bmad-code-org/BMAD-METHOD/llms.txt
> Use this file to discover all available pages before exploring further.

# Module System Overview

> Understanding BMad Method's modular architecture and how to use modules

## Overview

The BMad Method uses a modular architecture that allows you to install and configure only the capabilities you need. Each module provides specialized workflows, agents, and tooling for specific development domains.

## Core Architecture

The BMad ecosystem consists of:

* **Core Module** - Foundation configuration shared across all modules
* **BMad Method Module (BMM)** - The primary agile AI-driven development framework
* **External Modules** - Specialized extensions for specific domains

## Available Modules

<CardGroup cols={2}>
  <Card title="BMad Method (BMM)" icon="brain" href="/reference/modules/bmad-method">
    Core framework with 34+ workflows for agile AI-driven development
  </Card>

  <Card title="BMad Builder (BMB)" icon="hammer" href="/reference/modules/bmad-builder">
    Create custom BMad agents, workflows, and modules
  </Card>

  <Card title="Test Architect (TEA)" icon="flask" href="/reference/modules/test-architect">
    Enterprise test strategy, automation, and quality gates
  </Card>

  <Card title="Game Dev Studio (BMGD)" icon="gamepad" href="/reference/modules/game-dev-studio">
    Game development workflows for Unity, Unreal, and Godot
  </Card>

  <Card title="Creative Intelligence Suite (CIS)" icon="lightbulb" href="/reference/modules/creative-intelligence">
    Innovation, brainstorming, and design thinking tools
  </Card>
</CardGroup>

## Module Installation

Modules can be installed during initial setup or added later:

### During Installation

```bash theme={null}
npx bmad-method install
```

The installer will prompt you to select which modules to install.

### Non-Interactive Installation

```bash theme={null}
npx bmad-method install --directory /path/to/project --modules bmm,tea,bmb --yes
```

### Module Codes

Use these codes when installing modules:

| Code  | Module Name                 |
| ----- | --------------------------- |
| `bmm` | BMad Method Module          |
| `bmb` | BMad Builder                |
| `tea` | Test Architect Enterprise   |
| `gds` | Game Dev Studio             |
| `cis` | Creative Intelligence Suite |

## Module Configuration

Each module can define:

* **Configuration Variables** - Customizable settings for paths, preferences, and behavior
* **Workflows** - Structured agent-facilitated processes
* **Agents** - Specialized AI personas with domain expertise
* **Skills** - Reusable capabilities that agents can invoke
* **Directory Structure** - Auto-created folders for artifacts and outputs

### Core Configuration

All modules inherit these core settings:

* `user_name` - What agents call you (or your team name)
* `communication_language` - Language for agent chat interactions
* `document_output_language` - Language for generated documentation
* `output_folder` - Base directory for all BMad outputs
* `tool_supports_subagents` - Whether your AI tool supports subagent patterns
* `tool_supports_agent_teams` - Whether your AI tool supports agent team collaboration

## Module Types

### Official Modules

Maintained by the BMad core team under the `bmad-code-org` GitHub organization. These modules follow strict quality standards and are tested with each BMad release.

### Community Modules

Community-contributed modules that extend BMad for specific use cases. Coming soon!

## Module Development

Want to create your own module? Use the [BMad Builder module](/reference/modules/bmad-builder) to scaffold and develop custom modules.

See the [Module Development Guide](/guides/module-development) for detailed instructions.

## Next Steps

<CardGroup cols={2}>
  <Card title="Install Modules" icon="download" href="/guides/install-modules">
    Learn how to add modules to your project
  </Card>

  <Card title="BMM Reference" icon="book" href="/reference/modules/bmad-method">
    Explore the core BMad Method module
  </Card>
</CardGroup>