Claude Messages 原生接口

{
  "role": "user",
  "content": [
    {
      "type": "image",
      "source": { "type": "base64", "media_type": "image/png", "data": "iVBORw0KGgo..." }
    },
    { "type": "text", "text": "这张图里的表格一共有几行？" }
  ]
}

curl https://www.tutujin.com/v1/messages \
  -H "x-api-key: $TUTUJIN_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-sonnet-5-5",
    "max_tokens": 1024,
    "system": "你是严谨的法务助理，回答时注明依据的合同条款编号。",
    "messages": [
      {"role": "user", "content": "违约金按合同总额 30% 计算，这个约定有什么风险？"}
    ]
  }'

import os
import anthropic

client = anthropic.Anthropic(
    base_url="https://www.tutujin.com",
    api_key=os.environ["TUTUJIN_API_KEY"],
)

message = client.messages.create(
    model="claude-sonnet-5-5",
    max_tokens=1024,
    system="你是严谨的法务助理，回答时注明依据的合同条款编号。",
    messages=[{"role": "user", "content": "违约金按合同总额 30% 计算，这个约定有什么风险？"}],
)
print(message.content[0].text)
print(message.usage)

import Anthropic from '@anthropic-ai/sdk'

const client = new Anthropic({ baseURL: 'https://www.tutujin.com', apiKey: process.env.TUTUJIN_API_KEY })

const message = await client.messages.create({
  model: 'claude-sonnet-5-5',
  max_tokens: 1024,
  system: '你是严谨的法务助理，回答时注明依据的合同条款编号。',
  messages: [{ role: 'user', content: '违约金按合同总额 30% 计算，这个约定有什么风险？' }],
})
console.log(message.content[0].text)
console.log(message.usage)

{
  "id": "msg_...",
  "type": "message",
  "role": "assistant",
  "model": "claude-sonnet-5-5",
  "content": [
    { "type": "text", "text": "30% 的比例明显偏高，在诉讼中可能被认定为过高……" }
  ],
  "stop_reason": "end_turn",
  "stop_sequence": null,
  "usage": {
    "input_tokens": 52,
    "output_tokens": 210,
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0
  }
}

event: message_start
data: {"type":"message_start","message":{"id":"msg_...","type":"message","role":"assistant","content":[],"usage":{"input_tokens":52,"output_tokens":1}}}

event: content_block_start
data: {"type":"content_block_start","index":0,"content_block":{"type":"text","text":""}}

event: content_block_delta
data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"30% 的比例"}}

event: content_block_stop
data: {"type":"content_block_stop","index":0}

event: message_delta
data: {"type":"message_delta","delta":{"stop_reason":"end_turn","stop_sequence":null},"usage":{"output_tokens":210}}

event: message_stop
data: {"type":"message_stop"}

with client.messages.stream(
    model="claude-sonnet-5-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "写一段 100 字的产品介绍"}],
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)
    print("\n", stream.get_final_message().usage)

const stream = client.messages.stream({
  model: 'claude-sonnet-5-5',
  max_tokens: 1024,
  messages: [{ role: 'user', content: '写一段 100 字的产品介绍' }],
})
stream.on('text', (text) => process.stdout.write(text))
const final = await stream.finalMessage()
console.log('\n', final.usage)

{
  "model": "claude-sonnet-5-5",
  "max_tokens": 1024,
  "system": [
    { "type": "text", "text": "你是售后客服，只依据下面的退换货政策回答。" },
    { "type": "text", "text": "（这里放很长的退换货政策全文）", "cache_control": { "type": "ephemeral" } }
  ],
  "messages": [{ "role": "user", "content": "拆封后还能退吗？" }]
}