Make your first API call to Claude and build a simple web search assistant
下面我们通过向 Claude 发起第一个 API 调用，并构建一个简单的网络搜索助手

# Prerequisites  先决条件

An Anthropic Console account
Anthropic 控制台账户

console.anthropic.com 已迁移至 platform.claude.com

An API key  
一个 API 密钥

# Call the API  调用 API

可以通过cURL命令行，Python或Java,下面我们以TypeScript进行示例：

## Set your API key  设置 API 密钥

Get your API key from the Claude Console and set it as an environment variable:
从 Claude 控制台获取 API 密钥并将其设置为环境变量：

export ANTHROPIC_API_KEY='your-api-key-here'

## Install the SDK  安装 SDK

Install the Anthropic TypeScript SDK:
安装 Anthropic TypeScript SDK:

npm install @anthropic-ai/sdk

## Create your code  编写你的代码

Save this as quickstart.ts:
将下面代码保存为 quickstart.ts :

```js
import Anthropic from "@anthropic-ai/sdk";

async function main() {
  const anthropic = new Anthropic();

  const msg = await anthropic.messages.create({
    model: "claude-sonnet-4-5",
    max_tokens: 1000,
    messages: [
      {
        role: "user",
        content: "What should I search for to find the latest developments in renewable energy?"
      }
    ]
  });
  console.log(msg);
}

main().catch(console.error);

```
我该如何搜索以找到最新的可再生能源发展动态

## Run your code  运行你的代码

npx tsx quickstart.ts

Example output:  示例输出：

```bash
{
  id: 'msg_01ThFHzad6Bh4TpQ6cHux9t8',
  type: 'message',
  role: 'assistant',
  model: 'claude-sonnet-4-5-20250929',
  content: [
    {
      type: 'text',
      text: 'Here are some effective search strategies to find the latest renewable energy developments:\n\n' + //这里有一些有效的搜索策略，用于查找最新的可再生能源发展动态
        '## Search Terms to Use:\n' +
        '- "renewable energy news 2024"\n' +
        '- "clean energy breakthroughs"\n' +
        '- "solar wind technology advances"\n' +
        '- "energy storage innovations"\n' +
        '- "green hydrogen developments"\n' +
        '- "offshore wind projects"\n' +
        '- "battery technology renewable"\n\n' +
        '## Best Sources to Check:\n\n' +
        '**News & Industry Sites:**\n' +
        '- Renewable Energy World\n' +
        '- CleanTechnica\n' +
        '- GreenTech Media (now Wood Mackenzie)\n' +
        '- Energy Storage News\n' +
        '- PV Magazine (for solar)...'
    }
  ],
  stop_reason: 'end_turn',
  usage: {
    input_tokens: 21,
    output_tokens: 302
  }
}
```