> For the complete documentation index, see [llms.txt](https://query-expander.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://query-expander.gitbook.io/docs/ja/youkoso.md).

# ようこそ

## クエリ拡張器

曖昧さを精度に変えるAIの力。

### クエリ拡張器とは何ですか？

クエリ拡張器はLLM向けのプロンプト最適化ツールです。あいまいな入力を明確で効果的なクエリに変換し、AIからより良い応答を得られるようにします。

### 主な機能

* **3つの詳細レベル** - 簡潔 / 標準 / 詳細から選択
* **リファインのみモード** - 構造を維持しながらテキストを磨く
* **トーン調整** - カジュアル / ニュートラル / フォーマルを選択
* **Markdownサポート** - 見出しやリスト構造を保持

### クイックスタート

1. テキストエリアにクエリを入力
2. 詳細レベルを選択（簡潔 / 標準 / 詳細）
3. 「ENHANCE QUERY」をクリック
4. 結果をコピーまたはダウンロード


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://query-expander.gitbook.io/docs/ja/youkoso.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.