> ## Documentation Index
> Fetch the complete documentation index at: https://novita.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Anthropic SDK 互換性

export const AnthropicCompatibilityModels = () => {
  if (typeof document === "undefined") {
    return null;
  } else {
    let attempts = 0;
    const maxAttempts = 50;
    const INIT_DISPLAY_COUNT = 3;
    const interval = setInterval(() => {
      const clientComponent = document.getElementById("anthropic-compatibility-models");
      if (clientComponent && window.novitaRemoteData.llmModels.status === 'loaded') {
        const modelList = window.novitaRemoteData.llmModels.data.filter(model => {
          return (model.endpoints || []).includes('anthropic');
        });
        let displayModels = modelList.slice(0, INIT_DISPLAY_COUNT).map(model => {
          return `<li><span class="model-id-item">${model.id}</span></li>`;
        }).join('');
        let showMoreButton = '';
        if (modelList.length > INIT_DISPLAY_COUNT) {
          showMoreButton = `<button id="show-more-anthropic-compatibility-model-btn" style="margin-left: 32px; color: rgb(40 116 255)">View More</button>`;
        }
        clientComponent.innerHTML = `
          <ul>${displayModels}</ul>
          ${showMoreButton}
        `;
        document.getElementById('show-more-anthropic-compatibility-model-btn')?.addEventListener('click', () => {
          clientComponent.innerHTML = `
            <ul>${modelList.map(model => {
            return `<li><span class="model-id-item">${model.id}</span></li>`;
          }).join('')}</ul>
          `;
        });
        clearInterval(interval);
      }
      attempts++;
      if (attempts >= maxAttempts) {
        clearInterval(interval);
      }
    }, 200);
    return <div id="anthropic-compatibility-models"></div>;
  }
};

Novita AI は、Anthropic SDK を Novita AI モデルで使用できる互換 API を提供しています。これは、すでに Anthropic SDK を使用していて、Novita AI モデルに切り替えたい場合に便利です。

## サポートされているモデル

現在、Anthropic SDK と互換性があるのは以下のモデルのみです。

<AnthropicCompatibilityModels />

## クイックスタートガイド

このガイドでは、Anthropic SDK を Novita AI モデルで使用する方法をステップごとに説明します。

### 1. Anthropic SDK をインストールする

<CodeGroup>
  ```bash Python icon="python" theme={"system"}
  pip install anthropic
  ```

  ```bash TypeScript icon="js" theme={"system"}
  npm install @anthropic-ai/sdk
  ```
</CodeGroup>

### 2. クライアントを初期化する

Anthropic SDK は、API キーとベース URL を環境変数 `ANTHROPIC_API_KEY` および `ANTHROPIC_BASE_URL` から取得するように設計されています。また、初期化時に Anthropic クライアントへパラメータを渡すこともできます。

<Tip>
  API キーは[設定ページ](https://novita.ai/settings/key-management?utm_source=getstarted)で確認および管理できます。
</Tip>

* 環境変数を使用する

<CodeGroup>
  ```bash Bash icon="terminal" theme={"system"}
  export ANTHROPIC_BASE_URL="https://api.novita.ai/anthropic"
  export ANTHROPIC_API_KEY="<YOUR_NOVITA_API_KEY>"
  ```
</CodeGroup>

* Anthropic クライアントの初期化時にパラメータを設定する

<CodeGroup>
  ```python Python icon="python" theme={"system"}
  import anthropic

  client = anthropic.Anthropic(
      base_url="https://api.novita.ai/anthropic",
      api_key="<YOUR_NOVITA_API_KEY>",
      # Rewrite header
      default_headers={
          "Content-Type": "application/json",
          "Authorization": "Bearer <YOUR_NOVITA_API_KEY>",
      }
  )
  ```

  ```typescript TypeScript icon="js" theme={"system"}
  import Anthropic from "@anthropic-ai/sdk";

  const anthropic = new Anthropic({
      baseURL: "https://api.novita.ai/anthropic",
      apiKey: "<YOUR_NOVITA_API_KEY>",
      // Rewrite header
      defaultHeaders: {
        "Content-Type": "application/json",
        Authorization: `Bearer <YOUR_NOVITA_API_KEY>`,
      }
  });
  ```
</CodeGroup>

### 3. API を呼び出す

<CodeGroup>
  ```python Python icon="python" theme={"system"}
  import anthropic

  # Initialize the client, if you already set `ANTHROPIC_BASE_URL` and `ANTHROPIC_API_KEY` 
  # in the environment variables, you can omit the `api_key` and `base_url` parameters.
  client = anthropic.Anthropic(
      base_url="https://api.novita.ai/anthropic",
      api_key="<YOUR_NOVITA_API_KEY>",
      # Rewrite header
      default_headers={
          "Content-Type": "application/json",
          "Authorization": "Bearer <YOUR_NOVITA_API_KEY>",
      }
  )

  message = client.messages.create(
      model="moonshotai/kimi-k2-instruct",
      max_tokens=1000,
      temperature=1,
      system=[
          {
              "type": "text",
              "text": "You are a world-class poet. Respond only with short poems."
          }
      ],
      messages=[
          {
              "role": "user",
              "content": [
                  {
                      "type": "text",
                      "text": "Why is the ocean salty?"
                  }
              ]
          }
      ]
  )

  print(message.content)
  ```

  ```typescript TypeScript icon="js" theme={"system"}
  import Anthropic from "@anthropic-ai/sdk";

  // Initialize the client, if you already set `ANTHROPIC_BASE_URL` and `ANTHROPIC_API_KEY` 
  // in the environment variables, you can omit the `baseURL` and `apiKey` parameters.
  const anthropic = new Anthropic({
      baseURL: "https://api.novita.ai/anthropic",
      apiKey: "<YOUR_NOVITA_API_KEY>",
      // Rewrite header
      defaultHeaders: {
        "Content-Type": "application/json",
        Authorization: `Bearer <YOUR_NOVITA_API_KEY>`,
      }
  });

  const msg = await anthropic.messages.create({
    model: "moonshotai/kimi-k2-instruct",
    max_tokens: 1000,
    temperature: 1,
    system="You are a world-class poet. Respond only with short poems.",
    messages: [
      {
        role: "user",
        content: [
          {
            type: "text",
            text: "Why is the ocean salty?"
          }
        ]
      }
    ]
  });

  console.log(msg);
  ```
</CodeGroup>