> ## Documentation Index
> Fetch the complete documentation index at: https://gccai.heqingsong.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# Generación de imágenes Seedream-4.0

>  - Modo de procesamiento asíncrono, devuelve un ID de tarea para consultas posteriores
- Admite múltiples modos de generación, incluidos text-to-image, image-to-image y edición de imágenes
- Los enlaces de las imágenes generadas son válidos por 24 horas; guárdelos cuanto antes 

```bash cURL theme={null}
curl --request POST \
  --url https://gccai.heqingsong.uk/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedream-4.0",
    "prompt": "A cute panda playing in a bamboo forest",
    "size": "1:1",
    "resolution": "2K",
    "n": 1,
    "image_urls": [
      "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
    ]
  }'
```

```python Python theme={null}
import requests

url = "https://gccai.heqingsong.uk/v1/images/generations"

payload = {
    "model": "seedream-4.0",
    "prompt": "A cute panda playing in a bamboo forest",
    "size": "1:1",
    "resolution": "2K",
    "n": 1,
    "image_urls": [
        "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
    ]
}

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

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

print(response.json())
```

```javascript JavaScript theme={null}
const url = "https://gccai.heqingsong.uk/v1/images/generations";

const payload = {
  model: "seedream-4.0",
  prompt: "A cute panda playing in a bamboo forest",
  size: "1:1",
  resolution: "2K",
  n: 1,
  image_urls: [
    "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
  ]
};

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));
```

```go Go theme={null}
package main

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

func main() {
    url := "https://gccai.heqingsong.uk/v1/images/generations"

    payload := map[string]interface{}{
        "model":      "seedream-4.0",
        "prompt":     "A cute panda playing in a bamboo forest",
        "size":       "1:1",
        "resolution": "2K",
        "n":          1,
        "image_urls": []string{
            "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png",
        },
    }

    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))
}
```

```java Java theme={null}
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://gccai.heqingsong.uk/v1/images/generations";

        String payload = """
        {
          "model": "seedream-4.0",
          "prompt": "A cute panda playing in a bamboo forest",
          "size": "1:1",
          "resolution": "2K",
          "n": 1,
          "image_urls": [
            "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
          ]
        }
        """;

        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 PHP theme={null}
<?php

$url = "https://gccai.heqingsong.uk/v1/images/generations";

$payload = [
    "model" => "seedream-4.0",
    "prompt" => "A cute panda playing in a bamboo forest",
    "size" => "1:1",
    "resolution" => "2K",
    "n" => 1,
    "image_urls" => [
        "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
    ]
];

$ch = curl_init($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;
?>
```

```ruby Ruby theme={null}
require 'net/http'
require 'json'
require 'uri'

url = URI("https://gccai.heqingsong.uk/v1/images/generations")

payload = {
  model: "seedream-4.0",
  prompt: "A cute panda playing in a bamboo forest",
  size: "1:1",
  resolution: "2K",
  n: 1,
  image_urls: [
    "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
  ]
}

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
```

```swift Swift theme={null}
import Foundation

let url = URL(string: "https://gccai.heqingsong.uk/v1/images/generations")!

let payload: [String: Any] = [
    "model": "seedream-4.0",
    "prompt": "A cute panda playing in a bamboo forest",
    "size": "1:1",
    "resolution": "2K",
    "n": 1,
    "image_urls": [
        "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
    ]
]

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()
```

```csharp C# theme={null}
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var url = "https://gccai.heqingsong.uk/v1/images/generations";

        var payload = @"{
            ""model"": ""seedream-4.0"",
            ""prompt"": ""A cute panda playing in a bamboo forest"",
            ""size"": ""1:1"",
            ""resolution"": ""2K"",
            ""n"": 1,
            ""image_urls"": [
                ""https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png""
            ]
        }";

        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);
    }
}
```

```c C theme={null}
#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://gccai.heqingsong.uk/v1/images/generations";
        const char *payload = "{"
            "\"model\":\"seedream-4.0\","
            "\"prompt\":\"A cute panda playing in a bamboo forest\","
            "\"size\":\"1:1\","
            "\"resolution\":\"2K\","
            "\"n\":1,"
            "\"image_urls\":[\"https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png\"]"
        "}";

        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;
}
```

```objectivec Objective-C theme={null}
#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSURL *url = [NSURL URLWithString:@"https://gccai.heqingsong.uk/v1/images/generations"];
        
        NSDictionary *payload = @{
            @"model": @"seedream-4.0",
            @"prompt": @"A cute panda playing in a bamboo forest",
            @"size": @"1:1",
            @"resolution": @"2K",
            @"n": @1,
            @"image_urls": @[
                @"https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
            ]
        };
        
        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;
}
```

```ocaml OCaml theme={null}
(* Requires cohttp and yojson libraries *)
open Lwt
open Cohttp
open Cohttp_lwt_unix

let url = "https://gccai.heqingsong.uk/v1/images/generations"

let payload = {|{
  "model": "seedream-4.0",
  "prompt": "A cute panda playing in a bamboo forest",
  "size": "1:1",
  "resolution": "2K",
  "n": 1,
  "image_urls": [
    "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
  ]
}|}

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
```

```dart Dart theme={null}
import 'dart:convert';
import 'package:http/http.dart' as http;

void main() async {
  final url = Uri.parse('https://gccai.heqingsong.uk/v1/images/generations');
  
  final payload = {
    'model': 'seedream-4.0',
    'prompt': 'A cute panda playing in a bamboo forest',
    'size': '1:1',
    'resolution': '2K',
    'n': 1,
    'image_urls': [
      'https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png'
    ]
  };
  
  final response = await http.post(
    url,
    headers: {
      'Authorization': 'Bearer <token>',
      'Content-Type': 'application/json',
    },
    body: jsonEncode(payload),
  );
  
  print(response.body);
}
```

```r R theme={null}
library(httr)
library(jsonlite)

url <- "https://gccai.heqingsong.uk/v1/images/generations"

payload <- list(
  model = "seedream-4.0",
  prompt = "A cute panda playing in a bamboo forest",
  size = "1:1",
  resolution = "2K",
  n = 1,
  image_urls = list(
    "https://gccai.heqingsong.uk/_gccai/cdn/doc/1761215838466614297_9852.png"
  )
)

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

cat(content(response, "text"))
```

```json 200 theme={null}
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01K8SGYNNNVBQTXNR4MM964S7K"
    }
  ]
}
```

```json 400 theme={null}
{
  "error": {
    "code": 400,
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}
```

```json 401 theme={null}
{
  "error": {
    "code": 401,
    "message": "Invalid authentication credentials",
    "type": "authentication_error"
  }
}
```

```json 402 theme={null}
{
  "error": {
    "code": 402,
    "message": "Insufficient balance. Please top up your account",
    "type": "payment_required"
  }
}
```

```json 403 theme={null}
{
  "error": {
    "code": 403,
    "message": "Access forbidden. You don't have permission to access this resource",
    "type": "permission_error"
  }
}
```

```json 429 theme={null}
{
  "error": {
    "code": 429,
    "message": "Rate limit exceeded. Please try again later",
    "type": "rate_limit_error"
  }
}
```

```json 500 theme={null}
{
  "error": {
    "code": 500,
    "message": "Internal server error. Please try again later",
    "type": "server_error"
  }
}
```

```json 502 theme={null}
{
  "error": {
    "code": 502,
    "message": "Bad gateway. The server is temporarily unavailable",
    "type": "bad_gateway"
  }
}
```

## Autorización

**Authorization** `string` *required*

Todos los endpoints de la API requieren autenticación mediante Bearer Token

Obtenga su clave de API:

Visite la [página de gestión de claves de API](https://gccai.heqingsong.uk/keys) para obtener su clave de API

Añádala a la cabecera de la solicitud:

```
Authorization: Bearer YOUR_API_KEY
```

## Cuerpo de la solicitud

**model** `string` *required* (default: seedream-4.0)

Nombre del modelo de generación de imágenes

Modelos admitidos: `seedream-4.0`, `seedream-4-0`, `Seedream-4.0`

Ejemplo: `"seedream-4.0"`

**nsfw\_check** `boolean` (default: false)

Indica si se debe moderar el contenido antes de enviar la tarea de imagen.

* `true`: revisar los prompts y las imágenes de entrada con `omni-moderation-latest`
* `false` u omitido: no enviar una solicitud de moderación, sin coste ni latencia de moderación adicionales (predeterminado)

**prompt** `string` *required*

Descripción textual para la generación de la imagen

Máximo 1000 caracteres

**size** `string` (default: 1:1)

Proporción de la imagen

Proporciones admitidas:

* `1:1` - Cuadrado (predeterminado)
* `4:3` - Horizontal 4:3
* `3:4` - Vertical 3:4
* `16:9` - Panorámico horizontal
* `9:16` - Vertical alargado
* `3:2` - Horizontal 3:2
* `2:3` - Vertical 2:3
* `2:1` - Formato horizontal alargado
* `1:2` - Formato vertical alargado
* `21:9` - Ultrapanorámico
* `9:21` - Ultravertical
* `auto` - Ajusta automáticamente la proporción según la imagen de referencia (requiere `image_urls`)

`2x1` equivale a `2:1` y `1x2` equivale a `1:2`. La `x` debe escribirse en minúscula y no se admiten espacios.

**resolution** `string` (default: 2K)

Resolución de la imagen

Resoluciones admitidas:

* `1K` - Resolución básica
* `2K` - Resolución estándar (predeterminada)
* `4K` - Alta definición

**Tamaños de referencia por resolución:**

| Resolución | Tamaño 1:1 | Tamaño 16:9 | Tamaño 2:1 | Tamaño 1:2 |
| - | - | - | - | - |
| 1K | 1024x1024 | 1280x720 | 1440x720 | 720x1440 |
| 2K | 2048x2048 | 2560x1440 | 2880x1440 | 1440x2880 |
| 4K | 4096x4096 | 5404x3040 | 5760x2880 | 2880x5760 |

**Tabla completa de píxeles**

**Resolución 1K**

| Proporción | Píxeles |
| - | - |
| 1:1 | 1024x1024 |
| 4:3 | 1152x864 |
| 3:4 | 864x1152 |
| 16:9 | 1280x720 |
| 9:16 | 720x1280 |
| 3:2 | 1248x832 |
| 2:3 | 832x1248 |
| 2:1 | 1440x720 |
| 1:2 | 720x1440 |
| 21:9 | 1512x648 |
| 9:21 | 648x1512 |

**Resolución 2K**

| Proporción | Píxeles |
| - | - |
| 1:1 | 2048x2048 |
| 4:3 | 2304x1728 |
| 3:4 | 1728x2304 |
| 16:9 | 2560x1440 |
| 9:16 | 1440x2560 |
| 3:2 | 2496x1664 |
| 2:3 | 1664x2496 |
| 2:1 | 2880x1440 |
| 1:2 | 1440x2880 |
| 21:9 | 3024x1296 |
| 9:21 | 1296x3024 |

**Resolución 4K**

| Proporción | Píxeles |
| - | - |
| 1:1 | 4096x4096 |
| 4:3 | 4694x3520 |
| 3:4 | 3520x4694 |
| 16:9 | 5404x3040 |
| 9:16 | 3040x5404 |
| 3:2 | 4992x3328 |
| 2:3 | 3328x4992 |
| 2:1 | 5760x2880 |
| 1:2 | 2880x5760 |
| 21:9 | 6198x2656 |
| 9:21 | 2656x6198 |

**n** `integer`

Número de imágenes a generar

Rango: 1-15 (mínimo 1, máximo 15)

Predeterminado: 1

**Nota:**

* **Debe indicar un número simple (por ejemplo, `1`); no use comillas o se producirá un error**

El cobro se descontará por adelantado según la cantidad

> [!NOTE]
>
> La cantidad de imágenes de referencia en `image_urls` + la cantidad final de imágenes generadas especificada por `n` debe ser ≤ 15.

**image\_urls** `array`

Lista de URL de imágenes de referencia para image-to-image o edición de imágenes

Se admiten dos formatos:

**1. URL completa de la imagen**

* URL de imagen de acceso público (http\:// o https\://)
* Ejemplo: `https://example.com/image.jpg`

**2. Formato codificado en Base64**

* **Es obligatorio usar el formato Data URI completo**
* Formato: `data:image/{format};base64,{base64-data}`
* Formatos de imagen admitidos: jpeg, png
* Ejemplo: `data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAYABg...`
* ⚠️ Nota: el prefijo `data:image/jpeg;base64,` es obligatorio

**Límites:**

* Formatos de imagen: jpeg, png
* Rango de proporción (ancho/alto): \[1/3, 3]
* Ancho y alto (px) > 14
* Tamaño: no superar los 10MB
* Píxeles totales: no superar 6000×6000 px

> [!NOTE]
>
> La cantidad de imágenes de referencia en `image_urls` + la cantidad final de imágenes generadas especificada por `n` debe ser ≤ 15.

**optimize\_prompt\_options** `string` (default: standard)

Modo de optimización del prompt

* `standard`: modo estándar, genera contenido de mayor calidad con mayor tiempo de procesamiento
* `fast`: modo rápido, genera contenido en menos tiempo con calidad regular

Predeterminado: `standard`

**sequential\_image\_generation** `string` (default: disabled)

Modo de generación secuencial de imágenes (función específica de Doubao)

Controla si se generan múltiples imágenes:

* `disabled`: desactiva el modo secuencial; genera solo 1 imagen aunque haya varias referencias (predeterminado)
* `auto`: activa el modo secuencial; permite generar múltiples imágenes

**Notas de uso:**

* ✅ Debe proporcionar `image_urls`: se requiere al menos 1 imagen de referencia
* ✅ Establezca `n: 3` o use `sequential_image_generation: "auto"` + `max_images: 3`
* ✅ Esto generará 3 imágenes distintas a partir de las imágenes de referencia
* ⚠️ Cuando `n > 1`, se configurará automáticamente como `auto`

**Limitaciones:**

* El text-to-image puro (sin `image_urls`) no puede generar múltiples imágenes: es una limitación de la API de Doubao

**sequential\_image\_generation\_options** `object`

Opciones de generación secuencial de imágenes

Disponible cuando `sequential_image_generation` se establece como `auto`

**Propiedades:**

* `max_images` (integer): especifica el número de imágenes a generar, rango: 1-15

**Ejemplo:**

```json theme={null}
"sequential_image_generation": "auto",
"sequential_image_generation_options": {
  "max_images": 3
}
```

**watermark** `boolean` (default: false)

Indica si debe añadirse una marca de agua a la imagen generada

* `true`: añadir marca de agua
* `false`: sin marca de agua (predeterminado)

## Respuesta

**code** `integer`

Código de estado de la respuesta

**data** `array`

Array de datos de la respuesta

**Propiedades**

**status** `string`

Estado de la tarea

* `submitted` - Enviada

**task\_id** `string`

Identificador único de la tarea


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