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段落替换

  • 替换歌曲的某一段（infill）。
  • 引用源音轨：task_id + audio_index 指定，无需记录任何额外 id
  • 异步任务：提交返回 task_id，轮询 GET /v1/music/tasks/:task_id 获取结果

引用源音轨：基于已有歌曲的操作无需记任何额外 id，只需传 task_id（产出源音轨那次任务的 task_id）+ audio_index（结果 data.result.music[] 里第几首，1-based，默认 1）。

请求示例
curl -X POST https://26j.cn/v1/music/generations/replaceMusic \
  -H 'Authorization: Bearer <token>' \
  -H 'Content-Type: application/json' \
  --data '{
    "model": "suno",
    "task_id": "task_01ABC",
    "audio_index": 1,
    "start_s": 30,
    "end_s": 45,
    "infill_lyrics": "新的一段歌词"
  }'

import requests

url = "https://26j.cn/v1/music/generations/replaceMusic"

payload = {
    "model": "suno",
    "task_id": "task_01ABC",
    "audio_index": 1,
    "start_s": 30,
    "end_s": 45,
    "infill_lyrics": "新的一段歌词"
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())

const url = "https://26j.cn/v1/music/generations/replaceMusic";

const payload = {
  model: "suno",
  task_id: "task_01ABC",
  audio_index: 1,
  start_s: 30,
  end_s: 45,
  infill_lyrics: "新的一段歌词"
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

package main

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

func main() {
    url := "https://26j.cn/v1/music/generations/replaceMusic"

    payload := map[string]interface{}{
        "model": "suno",
        "task_id": "task_01ABC",
        "audio_index": 1,
        "start_s": 30,
        "end_s": 45,
        "infill_lyrics": "新的一段歌词",
    }

    jsonData, _ := json.Marshal(payload)

    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
    req.Header.Set("Authorization", "Bearer <token>")
    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://26j.cn/v1/music/generations/replaceMusic";

        String payload = """
        {
          "model": "suno",
          "task_id": "task_01ABC",
          "audio_index": 1,
          "start_s": 30,
          "end_s": 45,
          "infill_lyrics": "新的一段歌词"
        }
        """;

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("Authorization", "Bearer <token>")
            .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://26j.cn/v1/music/generations/replaceMusic";

$payload = [
    "model" => "suno",
    "task_id" => "task_01ABC",
    "audio_index" => 1,
    "start_s" => 30,
    "end_s" => 45,
    "infill_lyrics" => "新的一段歌词"
];

$ch = curl_init($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, [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
]);

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

echo $response;
?>

require 'net/http'
require 'json'
require 'uri'

url = URI("https://26j.cn/v1/music/generations/replaceMusic")

payload = {
  model: "suno",
  task_id: "task_01ABC",
  audio_index: 1,
  start_s: 30,
  end_s: 45,
  infill_lyrics: "新的一段歌词"
}

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = "Bearer <token>"
request["Content-Type"] = "application/json"
request.body = payload.to_json

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

import Foundation

let url = URL(string: "https://26j.cn/v1/music/generations/replaceMusic")!

let payload: [String: Any] = [
    "model": "suno",
    "task_id": "task_01ABC",
    "audio_index": 1,
    "start_s": 30,
    "end_s": 45,
    "infill_lyrics": "新的一段歌词"
]

var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Bearer <token>", forHTTPHeaderField: "Authorization")
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://26j.cn/v1/music/generations/replaceMusic";

        var payload = @"{
            ""model"": ""suno"",
            ""task_id"": ""task_01ABC"",
            ""audio_index"": 1,
            ""start_s"": 30,
            ""end_s"": 45,
            ""infill_lyrics"": ""新的一段歌词""
        }";

        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("Authorization", "Bearer <token>");

        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>

int main(void) {
    CURL *curl;
    CURLcode res;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();

    if(curl) {
        const char *url = "https://26j.cn/v1/music/generations/replaceMusic";
        const char *payload = "{"
            "\"model\":\"suno\","
            "\"task_id\":\"task_01ABC\","
            "\"audio_index\":1,"
            "\"start_s\":30,"
            "\"end_s\":45,"
            "\"infill_lyrics\":\"新的一段歌词\""
        "}";

        struct curl_slist *headers = NULL;
        headers = curl_slist_append(headers, "Authorization: Bearer <token>");
        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://26j.cn/v1/music/generations/replaceMusic"];

        NSDictionary *payload = @{
            @"model": @"suno",
            @"task_id": @"task_01ABC",
            @"audio_index": @1,
            @"start_s": @30,
            @"end_s": @45,
            @"infill_lyrics": @"新的一段歌词"
        };

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

        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [request setHTTPMethod:@"POST"];
        [request setValue:@"Bearer <token>" forHTTPHeaderField:@"Authorization"];
        [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://26j.cn/v1/music/generations/replaceMusic"

let payload = {|{
  "model": "suno",
  "task_id": "task_01ABC",
  "audio_index": 1,
  "start_s": 30,
  "end_s": 45,
  "infill_lyrics": "新的一段歌词"
}|}

let () =
  let headers = Header.init ()
    |> fun h -> Header.add h "Authorization" "Bearer <token>"
    |> 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 'package:http/http.dart' as http;

void main() async {
  final url = Uri.parse('https://26j.cn/v1/music/generations/replaceMusic');

  final payload = {
    'model': 'suno',
    'task_id': 'task_01ABC',
    'audio_index': 1,
    'start_s': 30,
    'end_s': 45,
    'infill_lyrics': '新的一段歌词'
  };

  final response = await http.post(
    url,
    headers: {
      'Authorization': 'Bearer <token>',
      'Content-Type': 'application/json',
    },
    body: jsonEncode(payload),
  );

  print(response.body);
}

library(httr)
library(jsonlite)

url <- "https://26j.cn/v1/music/generations/replaceMusic"

payload <- list(
  model = "suno",
  task_id = "task_01ABC",
  audio_index = 1,
  start_s = 30,
  end_s = 45,
  infill_lyrics = "新的一段歌词"
)

response <- POST(
  url,
  add_headers(
    Authorization = "Bearer <token>",
    `Content-Type` = "application/json"
  ),
  body = toJSON(payload, auto_unbox = TRUE),
  encode = "raw"
)

cat(content(response, "text"))
响应示例
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01K8SGYNNNVBQTXNR4MM964S7K"
    }
  ]
}

{
  "error": {
    "code": 400,
    "message": "请求参数无效",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": 401,
    "message": "身份验证失败，请检查您的API密钥",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": 402,
    "message": "账户余额不足，请充值后再试",
    "type": "payment_required"
  }
}

{
  "error": {
    "code": 403,
    "message": "访问被禁止，您没有权限访问此资源",
    "type": "permission_error"
  }
}

{
  "error": {
    "code": 429,
    "message": "请求过于频繁，请稍后再试",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": 500,
    "message": "服务器内部错误，请稍后重试",
    "type": "server_error"
  }
}

{
  "error": {
    "code": 502,
    "message": "网关错误，服务器暂时不可用",
    "type": "bad_gateway"
  }
}

Authorizations

Authorizationstring必填

所有接口均需要使用Bearer Token进行认证

获取 API Key：

访问 API Key 管理页面 获取您的 API Key

使用时在请求头中添加：

Authorization: Bearer YOUR_API_KEY

Body

modelstring默认 suno

音频模型。当前传 suno（不传默认 suno）。

task_idstring必填

产出源音轨那次任务的 task_id。缺失或无法解析源时提交期直接返回 400。

audio_indexinteger默认 1

引用源任务结果 data.result.music[] 中的第几首（1-based；默认 1；一次生成通常 2 首：索引 1 与 2）。

infill_lyricsstring

替换段歌词。

start_snumber必填

替换起点（秒）。缺失直接返回 400。

end_snumber必填

替换终点（秒）。必须满足 0 ≤ start_s < end_s；源时长已知时不能越界。

versionstring默认 v6

公共版本：v6 / v6-wild / v6-mini；省略时默认 v6。使用 custom_model_id 时省略本字段。

custom_model_idstring

创建模型任务返回的完整 UUID，与 version 互斥。

promptstring

上下文歌词。

titlestring

标题。

tagsstring

风格标签。

negative_tagsstring

要排除的风格标签。

varietystring

风格变化程度：off / normal / high / extra / max。可省略。

max_modeboolean默认 false

是否启用 Max 模式；启用后按普通售价的 2 倍计费。

audio_formatstring

输出音频格式：mp3 / m4a / wav。本接口不支持目标时长字段。

prompt 是原歌词上下文，infill_lyrics 是替换片段的新歌词。不要发送 custom、instrumental、auto_lyrics 或旧编辑会话字段。

获取结果：本接口为异步任务。提交后拿到 task_id，按 3–5s 间隔轮询 GET /v1/music/tasks/{task_id}，直到 status 为 completed 或 failed（音乐生成通常 30–120s；生成中 status 可能为 pending 或 processing，progress 为 0–100 的整数且不保证按固定节点变化）。完成后从 data.result.music[] 取替换后的 audio_url。失败时 data.error.message 给出原因，且预扣额度自动退回。

Response

codeinteger

响应状态码

dataarray

返回数据数组

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