API 接口文本接口通用对话

Claude 消息接口

兼容 Anthropic 格式的 /v1/messages 接口文档:Claude 多轮对话、系统提示词、工具调用、图像理解与流式输出,附代码示例。

  • 完全兼容 Claude Messages API 格式
  • 支持多轮对话和单次查询
  • 支持文本、图像等多模态内容
curl https://anyrouter.win/v1/messages \
  -H "x-api-key: $API_KEY" \
  -H "anthropic-version: 2025-10-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5-20250929",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "你好,世界"}
    ]
  }'
import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_API_KEY",
    base_url="https://anyrouter.win"
)

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "你好,世界"}
    ]
)

print(message.content)
import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  apiKey: process.env.API_KEY,
  baseURL: "https://anyrouter.win",
});

const message = await client.messages.create({
  model: "claude-sonnet-4-5-20250929",
  max_tokens: 1024,
  messages: [{ role: "user", content: "你好,世界" }],
});

console.log(message.content);
package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "net/http"
    "os"
)

func main() {
    url := "https://anyrouter.win/v1/messages"

    payload := map[string]interface{}{
        "model": "claude-sonnet-4-5-20250929",
        "max_tokens": 1024,
        "messages": []map[string]string{
            {
                "role":    "user",
                "content": "你好,世界",
            },
        },
    }

    jsonData, _ := json.Marshal(payload)

    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
    req.Header.Set("x-api-key", os.Getenv("API_KEY"))
    req.Header.Set("anthropic-version", "2025-10-01")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(body))
}
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.URI;

public class Main {
    public static void main(String[] args) throws Exception {
        String url = "https://anyrouter.win/v1/messages";
        String apiKey = System.getenv("API_KEY");

        String payload = """
        {
          "model": "claude-sonnet-4-5-20250929",
          "max_tokens": 1024,
          "messages": [
            {
              "role": "user",
              "content": "你好,世界"
            }
          ]
        }
        """;

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("x-api-key", apiKey)
            .header("anthropic-version", "2025-10-01")
            .header("Content-Type", "application/json")
            .POST(HttpRequest.BodyPublishers.ofString(payload))
            .build();

        HttpResponse<String> response = client.send(request,
            HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}
<?php

$url = "https://anyrouter.win/v1/messages";
$apiKey = getenv('API_KEY');

$payload = [
    "model" => "claude-sonnet-4-5-20250929",
    "max_tokens" => 1024,
    "messages" => [
        [
            "role" => "user",
            "content" => "你好,世界"
        ]
    ]
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "x-api-key: " . $apiKey,
    "anthropic-version: 2025-10-01",
    "Content-Type: application/json"
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>
require 'net/http'
require 'json'
require 'uri'

url = URI("https://anyrouter.win/v1/messages")
api_key = ENV['API_KEY']

payload = {
  model: "claude-sonnet-4-5-20250929",
  max_tokens: 1024,
  messages: [
    {
      role: "user",
      content: "你好,世界"
    }
  ]
}

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = api_key
request["anthropic-version"] = "2025-10-01"
request["Content-Type"] = "application/json"
request.body = payload.to_json

response = http.request(request)
puts response.body
import Foundation

let url = URL(string: "https://anyrouter.win/v1/messages")!
let apiKey = ProcessInfo.processInfo.environment["API_KEY"] ?? ""

let payload: [String: Any] = [
    "model": "claude-sonnet-4-5-20250929",
    "max_tokens": 1024,
    "messages": [
        [
            "role": "user",
            "content": "你好,世界"
        ]
    ]
]

var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue(apiKey, forHTTPHeaderField: "x-api-key")
request.setValue("2025-10-01", forHTTPHeaderField: "anthropic-version")
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = try? JSONSerialization.data(withJSONObject: payload)

let task = URLSession.shared.dataTask(with: request) { data, response, error in
    if let error = error {
        print("Error: \(error)")
        return
    }

    if let data = data, let responseString = String(data: data, encoding: .utf8) {
        print(responseString)
    }
}

task.resume()
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var url = "https://anyrouter.win/v1/messages";
        var apiKey = Environment.GetEnvironmentVariable("API_KEY");

        var payload = @"{
            ""model"": ""claude-sonnet-4-5-20250929"",
            ""max_tokens"": 1024,
            ""messages"": [
                {
                    ""role"": ""user"",
                    ""content"": ""你好,世界""
                }
            ]
        }";

        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("x-api-key", apiKey);
        client.DefaultRequestHeaders.Add("anthropic-version", "2025-10-01");

        var content = new StringContent(payload, Encoding.UTF8, "application/json");
        var response = await client.PostAsync(url, content);
        var result = await response.Content.ReadAsStringAsync();

        Console.WriteLine(result);
    }
}
#include <stdio.h>
#include <curl/curl.h>
#include <stdlib.h>

int main(void) {
    CURL *curl;
    CURLcode res;
    const char *api_key = getenv("API_KEY");

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();

    if(curl) {
        const char *url = "https://anyrouter.win/v1/messages";
        const char *payload = "{"
            "\"model\":\"claude-sonnet-4-5-20250929\","
            "\"max_tokens\":1024,"
            "\"messages\":[{\"role\":\"user\",\"content\":\"你好,世界\"}]"
        "}";

        char auth_header[256];
        snprintf(auth_header, sizeof(auth_header), "x-api-key: %s", api_key);

        struct curl_slist *headers = NULL;
        headers = curl_slist_append(headers, auth_header);
        headers = curl_slist_append(headers, "anthropic-version: 2025-10-01");
        headers = curl_slist_append(headers, "Content-Type: application/json");

        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);

        res = curl_easy_perform(curl);

        if(res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n",
                    curl_easy_strerror(res));
        }

        curl_slist_free_all(headers);
        curl_easy_cleanup(curl);
    }

    curl_global_cleanup();
    return 0;
}
#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSURL *url = [NSURL URLWithString:@"https://anyrouter.win/v1/messages"];
        NSString *apiKey = [NSProcessInfo processInfo].environment[@"API_KEY"];

        NSDictionary *payload = @{
            @"model": @"claude-sonnet-4-5-20250929",
            @"max_tokens": @1024,
            @"messages": @[
                @{
                    @"role": @"user",
                    @"content": @"你好,世界"
                }
            ]
        };

        NSError *error;
        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:payload
                                                          options:0
                                                            error:&error];

        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [request setHTTPMethod:@"POST"];
        [request setValue:apiKey forHTTPHeaderField:@"x-api-key"];
        [request setValue:@"2025-10-01" forHTTPHeaderField:@"anthropic-version"];
        [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
        [request setHTTPBody:jsonData];

        NSURLSessionDataTask *task = [[NSURLSession sharedSession]
            dataTaskWithRequest:request
            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                if (error) {
                    NSLog(@"Error: %@", error);
                    return;
                }
                NSString *result = [[NSString alloc] initWithData:data
                                                        encoding:NSUTF8StringEncoding];
                NSLog(@"%@", result);
            }];

        [task resume];
        [[NSRunLoop mainRunLoop] run];
    }
    return 0;
}
(* Requires cohttp and yojson libraries *)
open Lwt
open Cohttp
open Cohttp_lwt_unix

let url = "https://anyrouter.win/v1/messages"
let api_key = Sys.getenv "API_KEY"

let payload = {|{
  "model": "claude-sonnet-4-5-20250929",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": "你好,世界"
    }
  ]
}|}

let () =
  let headers = Header.init ()
    |> fun h -> Header.add h "x-api-key" api_key
    |> fun h -> Header.add h "anthropic-version" "2025-10-01"
    |> fun h -> Header.add h "Content-Type" "application/json"
  in
  let body = Cohttp_lwt.Body.of_string payload in

  let response = Client.post ~headers ~body (Uri.of_string url) >>= fun (resp, body) ->
    body |> Cohttp_lwt.Body.to_string >|= fun body_str ->
    print_endline body_str
  in
  Lwt_main.run response
import 'dart:convert';
import 'dart:io';
import 'package:http/http.dart' as http;

void main() async {
  final url = Uri.parse('https://anyrouter.win/v1/messages');
  final apiKey = Platform.environment['API_KEY'];

  final payload = {
    'model': 'claude-sonnet-4-5-20250929',
    'max_tokens': 1024,
    'messages': [
      {
        'role': 'user',
        'content': '你好,世界'
      }
    ]
  };

  final response = await http.post(
    url,
    headers: {
      'x-api-key': apiKey!,
      'anthropic-version': '2025-10-01',
      'Content-Type': 'application/json',
    },
    body: jsonEncode(payload),
  );

  print(response.body);
}
library(httr)
library(jsonlite)

url <- "https://anyrouter.win/v1/messages"
api_key <- Sys.getenv("API_KEY")

payload <- list(
  model = "claude-sonnet-4-5-20250929",
  max_tokens = 1024,
  messages = list(
    list(
      role = "user",
      content = "你好,世界"
    )
  )
)

response <- POST(
  url,
  add_headers(
    `x-api-key` = api_key,
    `anthropic-version` = "2025-10-01",
    `Content-Type` = "application/json"
  ),
  body = toJSON(payload, auto_unbox = TRUE),
  encode = "raw"
)

cat(content(response, "text"))
{
  "code": 200,
  "data": {
    "id": "msg_013Zva2CMHLNnXjNJJKqJ2EF",
    "type": "message",
    "role": "assistant",
    "content": [
      {
        "type": "text",
        "text": "你好!我是Claude。很高兴见到你。"
      }
    ],
    "model": "claude-sonnet-4-5-20250929",
    "stop_reason": "end_turn",
    "stop_sequence": null,
    "usage": {
      "input_tokens": 12,
      "output_tokens": 18
    }
  }
}
{
  "type": "error",
  "error": {
    "type": "invalid_request_error",
    "message": "请求参数无效"
  }
}
{
  "type": "error",
  "error": {
    "type": "authentication_error",
    "message": "无效的API密钥"
  }
}
{
  "type": "error",
  "error": {
    "type": "rate_limit_error",
    "message": "请求过于频繁"
  }
}
{
  "type": "error",
  "error": {
    "type": "api_error",
    "message": "服务器内部错误"
  }
}

Authorizations

stringrequired

API密钥用于身份验证

访问 API Key 管理页面 获取您的 API Key

在请求头中添加:

x-api-key: YOUR_API_KEY
stringrequired

API版本号

指定要使用的Claude API版本

示例:2025-10-01

Body

stringrequired

模型名称

  • claude-haiku-4-5-20251001 - Claude 4.5 快速响应版本
  • claude-sonnet-4-5-20250929 - Claude 4.5 平衡版本
  • claude-opus-4-1-20250805 - 最强大的 Claude 4.1 旗舰模型
  • claude-opus-4-1-20250805-thinking - Claude 4.1 Opus 深度思考版
  • claude-sonnet-4-5-20250929-thinking - Claude 4.5 Sonnet 深度思考版
arrayrequired

消息列表

消息数组,模型会基于这些消息生成下一条回复。每条消息包含 rolecontent 两个字段。

详细字段说明
stringrequired

角色类型

可选值:user(用户消息)、assistant(AI回复,用于多轮对话和预填充)

注:Claude API 的 system 提示词使用单独的 system 参数,不在 messages 中

stringrequired

消息内容

填写消息的文本内容

单条用户消息示例:

[{ "role": "user", "content": "你好,Claude" }]

多轮对话示例:

[
  { "role": "user", "content": "你好" },
  { "role": "assistant", "content": "你好!我是Claude。" },
  { "role": "user", "content": "能解释一下AI吗?" }
]

预填充助手回复:

[
  { "role": "user", "content": "太阳的希腊名称是?(A) Sol (B) Helios (C) Sun" },
  { "role": "assistant", "content": "答案是 (" }
]
integer

最大生成token数

生成停止前的最大token数量。模型可能会在达到此限制前停止。

不同模型有不同的最大值,请参考模型文档。最小值:1

string | array

系统提示词

系统提示词用于设置Claude的角色、个性、目标和指令。

字符串格式:

{
  "system": "你是一位专业的Python编程导师"
}

结构化格式:

{
  "system": [
    {
      "type": "text",
      "text": "你是一位专业的Python编程导师"
    }
  ]
}
number

温度参数,范围 0-1

控制输出的随机性:

  • 低值(如0.2):更确定、更保守
  • 高值(如0.8):更随机、更有创意

默认值:1.0

number

核采样参数,范围 0-1

使用nucleus sampling。建议使用 temperaturetop_p 其中之一,不要同时使用。

默认值:1.0

integer

Top-K采样

只从概率最高的K个选项中采样,用于移除"长尾"低概率响应。

建议仅在高级用例中使用。

boolean

是否启用流式输出

设置为 true 时,使用服务器发送事件(SSE)流式返回响应。

默认值:false

array

停止序列

自定义文本序列,遇到这些序列时模型将停止生成。

最多4个序列。

示例:["\n\nHuman:", "\n\nAssistant:"]

object

元数据

用于请求的元数据对象。

包含:

  • user_id: 用户标识符
array

工具定义

工具列表,模型可以调用这些工具来完成任务。

函数工具示例:

{
  "tools": [
    {
      "name": "get_weather",
      "description": "获取指定位置的当前天气",
      "input_schema": {
        "type": "object",
        "properties": {
          "location": {
            "type": "string",
            "description": "城市和省份,例如:北京"
          },
          "unit": {
            "type": "string",
            "enum": ["celsius", "fahrenheit"],
            "description": "温度单位"
          }
        },
        "required": ["location"]
      }
    }
  ]
}

支持的工具类型:

  • 自定义函数工具
  • 计算机使用工具(computer_20241022)
  • 文本编辑器工具(text_editor_20241022)
  • Bash工具(bash_20241022)
object

工具选择策略

控制模型如何使用工具:

  • {"type": "auto"}: 自动决定(默认)
  • {"type": "any"}: 必须使用工具
  • {"type": "tool", "name": "tool_name"}: 使用指定工具

Response

idstring

唯一消息标识符

示例:"msg_013Zva2CMHLNnXjNJJKqJ2EF"

typestring

对象类型

固定为 "message"

rolestring

角色

固定为 "assistant"

contentarray

内容块数组

模型生成的内容,是一个内容块数组。

文本内容:

[{ "type": "text", "text": "你好!我是Claude。" }]

工具使用:

[
  {
    "type": "tool_use",
    "id": "toolu_01A09q90qw90lq917835lq9",
    "name": "get_weather",
    "input": { "location": "北京", "unit": "celsius" }
  }
]

内容类型:

  • text: 文本内容
  • tool_use: 工具调用
modelstring

处理请求的模型

示例:"claude-sonnet-4-5-20250929"

stop_reasonstring

停止原因

可能的值:

  • end_turn: 自然结束
  • max_tokens: 达到最大token数
  • stop_sequence: 遇到停止序列
  • tool_use: 调用了工具
stop_sequencestring | null

触发的停止序列

如果因停止序列而停止,则为该序列内容;否则为 null

usageobject

Token使用统计

属性
input_tokensinteger

输入token数

output_tokensinteger

输出token数

使用示例

基础对话

import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_API_KEY",
    base_url="https://anyrouter.win"
)

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "解释量子计算的基本原理"}
    ]
)

print(message.content[0].text)

多轮对话

messages = [
    {"role": "user", "content": "什么是机器学习?"},
    {"role": "assistant", "content": "机器学习是人工智能的一个分支..."},
    {"role": "user", "content": "能举个实际应用的例子吗?"}
]

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=messages
)

使用系统提示词

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    system="你是一位资深的Python开发专家,擅长代码审查和优化建议。",
    messages=[
        {"role": "user", "content": "如何优化这段代码?\n\n[代码]"}
    ]
)

流式响应

with client.messages.stream(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "写一篇关于AI的短文"}
    ]
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)

工具使用

tools = [
    {
        "name": "get_stock_price",
        "description": "获取股票的实时价格",
        "input_schema": {
            "type": "object",
            "properties": {
                "ticker": {
                    "type": "string",
                    "description": "股票代码,例如:AAPL"
                }
            },
            "required": ["ticker"]
        }
    }
]

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    tools=tools,
    messages=[
        {"role": "user", "content": "特斯拉的股价是多少?"}
    ]
)

# 处理工具调用
if message.stop_reason == "tool_use":
    tool_use = next(block for block in message.content if block.type == "tool_use")
    print(f"调用工具: {tool_use.name}")
    print(f"参数: {tool_use.input}")

视觉理解

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "image",
                    "source": {
                        "type": "url",
                        "url": "https://example.com/image.jpg"
                    }
                },
                {
                    "type": "text",
                    "text": "描述这张图片"
                }
            ]
        }
    ]
)

Base64图像

import base64

with open("image.jpg", "rb") as image_file:
    image_data = base64.b64encode(image_file.read()).decode("utf-8")

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "image",
                    "source": {
                        "type": "base64",
                        "media_type": "image/jpeg",
                        "data": image_data
                    }
                },
                {
                    "type": "text",
                    "text": "分析这张图片"
                }
            ]
        }
    ]
)

最佳实践

1. 提示词工程

清晰的角色定义:

system = """你是一位经验丰富的首席数据科学家,专长包括:
- 深度统计分析、交互式数据可视化
- 精通机器学习模型全生命周期开发,深度掌握 Python 与 R 语言
- 输出内容必须严格遵循科学准确性与专业工程规范
请提供专业、准确的建议。"""

结构化输出:

message = "请以JSON格式返回分析结果,包含summary、key_findings和recommendations字段。"

2. 错误处理

from anthropic import APIError, RateLimitError

try:
    message = client.messages.create(
        model="claude-sonnet-4-5-20250929",
        max_tokens=1024,
        messages=[{"role": "user", "content": "你好"}]
    )
except RateLimitError:
    print("速率限制,请稍后重试")
except APIError as e:
    print(f"API错误: {e}")

3. Token优化

# 使用更短的提示词
messages = [
    {"role": "user", "content": "总结要点:\n\n[长文本]"}
]

# 限制输出长度
message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=500,  # 限制输出
    messages=messages
)

4. 预填充响应

# 引导模型以特定格式回复
messages = [
    {"role": "user", "content": "列出5个Python最佳实践"},
    {"role": "assistant", "content": "以下是5个Python最佳实践:\n\n1."}
]

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=messages
)

流式响应处理

Python流式示例

import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_API_KEY",
    base_url="https://anyrouter.win"
)

with client.messages.stream(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "写一个Python装饰器示例"}
    ]
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)

JavaScript流式示例

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

const client = new Anthropic({
  apiKey: process.env.API_KEY,
  baseURL: "https://anyrouter.win",
});

const stream = await client.messages.stream({
  model: "claude-sonnet-4-5-20250929",
  max_tokens: 1024,
  messages: [{ role: "user", content: "写一个React组件示例" }],
});

for await (const chunk of stream) {
  if (
    chunk.type === "content_block_delta" &&
    chunk.delta.type === "text_delta"
  ) {
    process.stdout.write(chunk.delta.text);
  }
}

注意事项

  1. API密钥安全

    • 使用环境变量存储API密钥
    • 不要在代码中硬编码密钥
    • 定期轮换密钥
  2. 速率限制

    • 注意API的速率限制
    • 实现重试机制
    • 使用指数退避策略
  3. Token管理

    • 监控token使用量
    • 优化提示词长度
    • 使用适当的max_tokens值
  4. 模型选择

    • Opus: 复杂任务、需要深度思考
    • Sonnet: 平衡性能和成本
    • Haiku: 快速响应、简单任务
  5. 内容过滤

    • 验证用户输入
    • 过滤敏感信息
    • 实现内容审核机制

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