跳转到主要内容

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推荐 endpoint

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最小请求

{
  "model": "claude-sonnet-4-20250514",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "image",
          "source": {
            "type": "url",
            "url": "https://example.com/ui.png"
          }
        },
        { "type": "text", "text": "描述这张图里的界面结构。" }
      ]
    }
  ]
}

​
cURL 示例

curl https://api.anthropic.com/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-sonnet-4-20250514",
    "max_tokens": 1024,
    "messages": [
      {
        "role": "user",
        "content": [
          {
            "type": "image",
            "source": {
              "type": "url",
              "url": "https://example.com/ui.png"
            }
          },
          { "type": "text", "text": "描述这张图里的界面结构。" }
        ]
      }
    ]
  }'

​
Python 示例

from anthropic import Anthropic

client = Anthropic(api_key="<ANTHROPIC_API_KEY>")

response = client.messages.create(
    model="claude-sonnet-4-20250514",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "image",
                    "source": {
                        "type": "url",
                        "url": "https://example.com/ui.png",
                    },
                },
                {"type": "text", "text": "描述这张图里的界面结构。"},
            ],
        }
    ],
)

print(response.content[0].text)

​
Node.js 示例

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

const client = new Anthropic({
  apiKey: process.env.ANTHROPIC_API_KEY,
});

const response = await client.messages.create({
  model: "claude-sonnet-4-20250514",
  max_tokens: 1024,
  messages: [
    {
      role: "user",
      content: [
        {
          type: "image",
          source: {
            type: "url",
            url: "https://example.com/ui.png"
          }
        },
        { type: "text", text: "描述这张图里的界面结构。" }
      ]
    }
  ]
});

console.log(response.content[0].text);

​
最佳实践

  • 图片块通常放在问题前面，让 Claude 先看素材再读指令
  • 大图或重复素材优先走 Files API 引用
  • OCR、界面理解和审核类场景很适合 Claude 的 block 结构