> For the complete documentation index, see [llms.txt](https://docs.maiagent.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.maiagent.ai/maiagent-user-guide/maiagent-user-guide-en/agent-builder/decision-guide.md).

# I Want to Do X, What Should I Use?

Not sure which module to use? Start from your need and find the right starting point.

## Scenario Comparison Table

### Let the Agent Answer Questions

| I want to...                                                        | Use                      | Why                                                       |
| ------------------------------------------------------------------- | ------------------------ | --------------------------------------------------------- |
| Let the Agent answer product-related questions                      | **Knowledge Base**       | Upload product manuals so the Agent can find answers      |
| Let the Agent answer frequently asked questions                     | **Knowledge Base** (FAQ) | Create FAQ pairs for precise matching of common questions |
| Let the Agent check order status                                    | **Database**             | Orders are in structured tables, requiring Text to SQL    |
| Let the Agent query real-time information (weather, exchange rates) | **Tools**                | Needs to call external APIs to get real-time data         |

### Let the Agent Take Action

| I want to...                                     | Use        | Why                                                                         |
| ------------------------------------------------ | ---------- | --------------------------------------------------------------------------- |
| Let the Agent send notification emails           | **Tools**  | Integrate with an Email API; the Agent triggers the send                    |
| Let the Agent create customer records in CRM     | **Tools**  | Integrate with a CRM API; the Agent executes the creation                   |
| Let the Agent handle complaints following an SOP | **Skills** | Define a complete workflow to ensure no steps are missed                    |
| Let the Agent guide customers through booking    | **Skills** | Multi-turn conversation to collect information, following a defined process |

### Let the Agent Automate

| I want to...                                                 | Use                  | Why                                                            |
| ------------------------------------------------------------ | -------------------- | -------------------------------------------------------------- |
| Automatically generate a report every morning                | **Agent Scheduling** | Set a scheduled execution to automatically deliver results     |
| Check system status every hour                               | **Agent Scheduling** | Set an interval execution, combined with Tools to check status |
| Automatically import website content into the Knowledge Base | **Crawler**          | Scrape web content and import it into the Knowledge Base       |

## Common Module Combinations

Most scenarios don't use just a single module. Here are common combinations:

### Smart Customer Service

```
Agent + Knowledge Base + FAQ
```

The most basic and common combination. The Agent uses the Knowledge Base to answer product questions, and FAQ handles high-frequency questions.

### Business Assistant

```
Agent + Knowledge Base + Database + Tools
```

Can look up product information (Knowledge Base), check inventory and pricing (Database), and help customers place orders (Tools).

### Automated Reporting

```
Agent + Tools + Agent Scheduling
```

The Agent uses Tools to retrieve data, Agent Scheduling triggers it on a timer, and results are automatically pushed to Slack or LINE.

### Process-Guided Bot

```
Agent + Skills + Tools + Knowledge Base
```

Skills define the complete SOP. During the process, the Agent queries the Knowledge Base for reference materials and uses Tools to execute actions.

## Still Not Sure?

Start with the simplest setup: **Agent + Knowledge Base**. Get the Agent answering questions first, then decide what capabilities to add based on actual user feedback after going live.


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