모든 API 요청에는 Authorization 헤더에 Bearer 토큰이 필요합니다. 대시보드에서 API 키를 관리할 수 있습니다.
http
1
Authorization: Bearer aio_your_api_key_here
API 키 받기: 대시보드의 API 키 페이지에서 무료 API 키를 생성하세요. 신규 계정에는 플랫폼 탐색을 위한 보너스 크레딧이 지급됩니다.
기본 URL
https://apiin.one/api/v1
API 엔드포인트
Click each endpoint to see full parameter details, example requests, and response format.
POST/api/v1/images/generationsImage generation
Generate images using AI models. Specify the model in the request body. The model field determines which image generation engine is used. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
model:string
Model slug. See Supported Models below for available options.
prompt:string
Text description of the image to generate (3–5000 chars)
aspect_ratio:optional string
Output aspect ratio (e.g. 1:1, 16:9, 9:16) Defaults to 1:1.
type:optional string
Generation mode. Model-specific, e.g. pro/flex for Flux 2, text-to-image/edit for Seedream
resolution:optional string
Output resolution. Model-specific, e.g. 1K/2K for Flux 2
quality:optional string
Quality level. Model-specific, e.g. medium/high for GPT Image
input_urls:optional array
Array of image URLs for image-to-image or editing mode
negative_prompt:optional string
Elements to avoid in the generated image (not all models support this)
seed:optional number
Random seed for reproducibility (not all models support this)
curl-X POST https://apiin.one/api/v1/images/generations\
2
-H"Authorization: Bearer aio_your_api_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"model": "flux-2",
6
"prompt": "A serene Japanese garden with cherry blossoms",
7
"aspect_ratio": "16:9",
8
"type": "pro",
9
"resolution": "1K"
10
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n41xxxx_flux2",
6
"status": "IN_PROGRESS"
7
}
8
}
POST/api/v1/videos/generationsVideo generation
Generate videos using AI models. Supports text-to-video and image-to-video. The model field determines which video engine is used. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
model:string
Model slug. See Supported Models below for available options.
prompt:string
Text description of the video (max 2500 chars for most models)
image:optional string
Image URL for image-to-video mode. Auto-detected by most models.
mode:optional string
Quality mode. Model-specific, e.g. std/pro for Kling 3
duration:optional number | string
Video duration in seconds. Model-specific (Kling 3: 3–15s, others vary) Defaults to 5.
aspect_ratio:optional string
Output aspect ratio (1:1, 9:16, 16:9) Defaults to 16:9.
resolution:optional string
Output resolution. Model-specific, e.g. 480p, 720p, 1080p
sound:optional boolean
Enable audio generation in the video (Kling 3) Defaults to true.
generateAudio:optional boolean
Enable audio generation (Seedance) Defaults to false.
generate_audio_switch:optional boolean
Enable audio generation (PixVerse) Defaults to false.
curl-X POST https://apiin.one/api/v1/videos/generations\
2
-H"Authorization: Bearer aio_your_api_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"model": "kling-3",
6
"prompt": "A golden retriever running through sunflowers at sunset",
7
"mode": "std",
8
"duration": 5,
9
"aspect_ratio": "16:9",
10
"sound": true
11
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n75xxxx_kling3",
6
"status": "IN_PROGRESS"
7
}
8
}
POST/api/v1/audio/musicMusic generation
Generate original music from text descriptions. Suno supports both "inspiration mode" (text description) and "custom mode" (lyrics + style + title). MiniMax Music supports lyrics-driven generation. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
model:string
Model: suno (defaults to chirp-v3-5) or minimax-music
prompt:optional string
Lyrics (Suno custom mode) or style description (MiniMax). Max 3000 chars for Suno v3.5/v4, 5000 for v4.5+.
gpt_description_prompt:optional string
Text description for Suno inspiration mode. Max 400 chars.
style:optional string
Musical style/genre (Suno custom mode). Max 1000 chars.
title:optional string
Song title (Suno). Max 80 characters.
make_instrumental:optional boolean
Generate instrumental only, no vocals (Suno) Defaults to false.
"prompt": "Verse 1: Walking down the street\nChorus: Summer dreams",
7
"style": "pop, upbeat, electronic",
8
"title": "Summer Dreams",
9
"make_instrumental": false
10
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n7xxxx_suno",
6
"status": "IN_PROGRESS"
7
}
8
}
POST/api/v1/audio/speechText to speech
Convert text to natural-sounding multi-voice dialogue speech using ElevenLabs V3. Supports 30+ languages and automatic language detection. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
model:string
Model slug: elevenlabs-v3
dialogue:array
Array of dialogue items: [{text: ..., voice: ...}]. Voice is optional.
stability:optional number
Voice stability (0–1). Lower = more variation, higher = more consistent. Defaults to 0.5.
language_code:optional string
Language code (e.g. en, zh, ja) or auto for detection Defaults to auto.
curl-X POST https://apiin.one/api/v1/audio/speech\
2
-H"Authorization: Bearer aio_your_api_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"model": "elevenlabs-v3",
6
"dialogue": [
7
{"text": "Hello, welcome to API in One.", "voice": "narrator"},
8
{"text": "Thank you! Tell me more.", "voice": "user"}
9
],
10
"stability": 0.5,
11
"language_code": "auto"
12
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n58xxxx_tts",
6
"status": "IN_PROGRESS"
7
}
8
}
POST/api/v1/chat/completionsChat / LLM
Chat completions in OpenAI-compatible format. Supports SSE streaming by default. Powered by Gemini (defaults to Gemini 3 Flash). Returns a synchronous or streamed response (not async task).
Request Body Parameters
Body ParametersJSON
model:string
Model slug: gemini. Backend defaults to Gemini 3 Flash.
messages:array
Array of message objects: [{role: user|assistant|system|developer, content: ...}]
stream:optional boolean
Enable SSE streaming. Responses are sent as Server-Sent Events. Defaults to true.
include_thoughts:optional boolean
Include model reasoning/thinking steps in response Defaults to true.
reasoning_effort:optional string
Reasoning depth: low or high Defaults to high.
tools:optional array
Array of tool definitions for function calling (OpenAI-compatible format)
response_format:optional object
Force structured output format (e.g. {type: json_object})
Remove image backgrounds instantly with AI precision. No model field required. 1 credit per image. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
image:string
URL of the image to remove background from
Example Request
bash
1
curl-X POST https://apiin.one/api/v1/images/tools/remove-bg\
2
-H"Authorization: Bearer aio_your_api_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"image": "https://example.com/photo.jpg"
6
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n19xxxx_bgremove"
6
}
7
}
POST/api/v1/images/tools/face-swapFace swap
Swap faces in images with natural-looking results. Requires a target image (body/scene) and a source face image. 4 credits per swap. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
image:string
URL of the target image (the body/scene to modify)
face_image:string
URL of the source face image (the face to swap in)
target_index:optional number
Face index in target image if multiple faces detected (0–10) Defaults to 0.
output_format:optional string
Output format: jpeg, png, or webp Defaults to jpeg.
Example Request
bash
1
curl-X POST https://apiin.one/api/v1/images/tools/face-swap\
Remove or replace video backgrounds with AI. Supports optional custom background image replacement. 10 credits per video. Returns a task_id for async polling.
Request Body Parameters
Body ParametersJSON
video:string
URL of the video to process
background_image:optional string
URL of a custom background image to replace with
Example Request
bash
1
curl-X POST https://apiin.one/api/v1/videos/tools/bg-remover\
2
-H"Authorization: Bearer aio_your_api_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"video": "https://example.com/talking-head.mp4"
6
}'
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n53xxxx_vbgr",
6
"status": "IN_PROGRESS"
7
}
8
}
GET/api/v1/tasks/{task_id}Check task status
Poll the status of any asynchronous generation task. The task_id is returned by all generation endpoints (except chat/completions). Poll until status is "SUCCESS" or "FAILED".
Request Body Parameters
Body ParametersJSON
task_id:string (path)
The task ID returned by the generation endpoint (e.g. n41xxxx_flux2)
Example Request
bash
1
curlhttps://apiin.one/api/v1/tasks/n41xxxx_flux2\
2
-H"Authorization: Bearer aio_your_api_key"
Example Response
json
1
{
2
"code": 200,
3
"message": "success",
4
"data": {
5
"task_id": "n41xxxx_flux2",
6
"status": "SUCCESS",
7
"consumed_credits": 5,
8
"error_message": null,
9
"created_at": "2026-02-25T12:00:00Z",
10
"request": {
11
"model": "flux-2",
12
"prompt": "A serene Japanese garden..."
13
},
14
"response": [
15
"https://cdn.example.com/generated-image.png"
16
]
17
}
18
}
요청 형식
모든 요청은 사용할 AI 모델을 지정하는 필수 'model' 필드가 포함된 JSON 본문을 사용합니다. 추가 매개변수는 모델에 따라 다릅니다.
json
1
{
2
"model": "flux-2",
3
"prompt": "A beautiful landscape",
4
"...other_params": "..."
5
}
'model' 매개변수는 항상 필수입니다. 지원되는 매개변수의 전체 목록은 각 모델의 문서 페이지를 참조하세요.
응답 형식
비동기 작업 (이미지, 비디오, 음악, 음성)
콘텐츠 생성 모델의 경우 API는 즉시 작업 ID를 반환합니다. 상태 엔드포인트를 폴링하여 작업 완료를 확인합니다.
Initial response when task is created.
1
{
2
"id": "task_abc123",
3
"status": "pending",
4
"model": "kling-3",
5
"created_at": "2026-02-24T12:00:00Z"
6
}
동기 응답 (채팅)
채팅 완성은 OpenAI 호환 형식으로 단일 요청에서 직접 응답을 반환합니다.
json
1
{
2
"id": "chatcmpl_xyz",
3
"model": "gemini",
4
"choices": [
5
{
6
"message": {
7
"role": "assistant",
8
"content": "..."
9
}
10
}
11
],
12
"usage": {
13
"prompt_tokens": 12,
14
"completion_tokens": 156,
15
"total_tokens": 168
16
},
17
"credits_consumed": 2
18
}
오류 처리
endpoints_desc
json
1
{
2
"error": {
3
"code": 401,
4
"message": "Invalid API key",
5
"type": "authentication_error"
6
}
7
}
Body ParametersJSON
400:optional invalid_request
잘못된 요청 매개변수. 필수 필드는 모델 문서를 확인하세요.
401:optional authentication_error
API 키가 없거나, 유효하지 않거나, 해지되었습니다.
402:optional insufficient_credits
계정 크레딧이 부족합니다. 계속 사용하려면 크레딧을 추가 구매하세요.
404:optional not_found
요청한 리소스(작업, 모델)를 찾을 수 없습니다.
429:optional rate_limit
요청 속도 제한 초과. 기본값은 분당 60회 요청입니다.
500:optional server_error
내부 서버 오류. 잠시 후 다시 시도해 주세요.
빠른 시작
1. API 키 받기
가입하고 대시보드에서 API 키를 생성하세요. 무료 계정에는 보너스 크레딧이 포함됩니다.
2. 첫 번째 요청 보내기
bash
1
curl-X POST https://apiin.one/api/v1/images/generations\
2
-H"Authorization: Bearer aio_your_key"\
3
-H"Content-Type: application/json"\
4
-d '{
5
"model": "flux-2",
6
"prompt": "A serene Japanese garden with cherry blossoms"
