# Finegrain Eraser Bbox API

> Xóa đối tượng bên trong một hộp giới hạn duy nhất do bạn cung cấp, với các chế độ express, standard hoặc premium

Nhận một hình ảnh và hộp giới hạn trong `box_prompts`, xóa đối tượng bên trong rồi tái tạo nền. Mỗi yêu cầu chỉ hỗ trợ một hộp. `mode` có thể là express, standard (mặc định) hoặc premium, còn `seed` nằm trong khoảng 0 đến 999 để tạo đầu ra có thể tái lập.

- Model id: `finegrain-eraser/bbox`
- Made by: Finegrain
- Category: Image Editing
- Output: image
- Price: from $0.09 / image (cheapest run $0.09 (90 API credits))
- Run: `POST https://api.doitong.com/v1/run/finegrain-eraser/bbox`
- Quote: `POST https://api.doitong.com/v1/quote/finegrain-eraser/bbox`
- Docs page: https://doitong.com/vi/developers/models/finegrain-eraser/bbox

## Pricing

Price: **from $0.09 / image** (the lowest tier; the quote prices your exact input). Billed per generated image.

Price rules (the first rule that matches the input wins; a parameter you leave out counts as its default):

- When `mode` = standard: $0.18 (180 API credits) / image
- When `mode` = premium: $0.27 (270 API credits) / image

The full example input below costs $0.18 = 180 API credits (1 image × 180 API credits).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.com/v1/quote/finegrain-eraser/bbox` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `image_url` | `image` | string (image URL) | yes |  |  | URL trỏ đến hình ảnh cần chỉnh sửa. |
| `box_prompts` |  | array of object {x_min, y_min, x_max, y_max} | yes |  |  | Vùng xóa được xác định bằng danh sách tọa độ cho bounding box duy nhất được hỗ trợ trong lời nhắc. |
| `box_prompts[].x_min` |  | integer | no | `0` |  | Tọa độ x tối thiểu của hộp. |
| `box_prompts[].y_min` |  | integer | no | `0` |  | Tọa độ y tối thiểu của hộp. |
| `box_prompts[].x_max` |  | integer | no | `0` |  | Tọa độ x tối đa của lời nhắc. |
| `box_prompts[].y_max` |  | integer | no | `0` |  | Tọa độ y tối đa của lời nhắc. |
| `mode` |  | enum (string) | no | `standard` | `express`, `standard`, `premium` | Thiết lập chất lượng cho thao tác xóa. |
| `seed` |  | integer \| null | no |  | 0 – 999 | Seed kiểm soát tính ngẫu nhiên để tạo sinh có thể tái lập. |

File parameters (`image`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
  "box_prompts": [
    {
      "x_max": 0,
      "x_min": 0,
      "y_max": 0,
      "y_min": 0
    }
  ]
}
```

A fuller example:

```json
{
  "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
  "box_prompts": [
    {
      "x_max": 0,
      "x_min": 0,
      "y_max": 0,
      "y_min": 0
    }
  ]
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/finegrain-eraser/bbox?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "box_prompts": [
      {
        "x_max": 0,
        "x_min": 0,
        "y_max": 0,
        "y_min": 0
      }
    ]
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.com/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/finegrain-eraser/bbox?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "box_prompts": [
      {
        "x_max": 0,
        "x_min": 0,
        "y_max": 0,
        "y_min": 0
      }
    ]
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.com/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "box_prompts": [
        {
            "x_max": 0,
            "x_min": 0,
            "y_max": 0,
            "y_min": 0,
        },
    ],
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/finegrain-eraser/bbox", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.com/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "finegrain-eraser/bbox",
      "input": {
        "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
        "box_prompts": [
          {
            "x_max": 0,
            "x_min": 0,
            "y_max": 0,
            "y_min": 0
          }
        ]
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "finegrain-eraser/bbox",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 180,
    "usd": "0.18",
    "charged": 180,
    "refunded": 0
  },
  "input": {
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "box_prompts": [
      {
        "x_max": 0,
        "x_min": 0,
        "y_max": 0,
        "y_min": 0
      }
    ]
  },
  "output": {
    "image": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    },
    "used_seed": 1
  },
  "outputs": [
    {
      "type": "image",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `image` | object {url, content_type, file_name, file_size} | Hình ảnh kết quả sau khi nội dung được chỉ định đã bị xóa. |
| `used_seed` | integer | Giá trị seed được dùng trong quá trình tạo sinh. |

## Related models

- [Finegrain Eraser](https://doitong.com/developers/models/finegrain-eraser.md) (`finegrain-eraser`): from $0.18 / image
- [Finegrain Eraser Mask](https://doitong.com/developers/models/finegrain-eraser/mask.md) (`finegrain-eraser/mask`): from $0.04 / image
- [FLUX.1 Kontext \[pro\]](https://doitong.com/developers/models/flux-pro/kontext.md) (`flux-pro/kontext`): $0.04 / image
- [GPT Image 2.5 Edit](https://doitong.com/developers/models/openai/gpt-image-2.5/flare/edit.md) (`openai/gpt-image-2.5/flare/edit`): from $0.12 / image
- [Nano Banana 2 Edit](https://doitong.com/developers/models/nano-banana-2/edit.md) (`nano-banana-2/edit`): from $0.06 / image
- [Nano Banana Pro Edit](https://doitong.com/developers/models/nano-banana-pro/edit.md) (`nano-banana-pro/edit`): from $0.15 / image
- [Qwen Image 3 Edit](https://doitong.com/developers/models/alibaba/qwen-image-3/edit.md) (`alibaba/qwen-image-3/edit`): from $0.04 / image
- [Seedream 5.0 Pro Edit](https://doitong.com/developers/models/bytedance/seedream/v5/pro/edit.md) (`bytedance/seedream/v5/pro/edit`): from $0.0675 / run of output image

## Links

- HTML page: https://doitong.com/developers/models/finegrain-eraser/bbox
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=finegrain-eraser/bbox
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/finegrain-eraser/bbox