# 在本機準備圖片版位預覽

標準 URL： https://sosoapi.ai/zh-tw/docs/mcp/prepare-asset-images

`sosoapi_prepare_asset_images`

從一張已獲授權存取的 Workspace 圖片，在本機產生 1–4 張有範圍限制的裁切、補邊或等比例調整大小 JPEG 預覽。僅支援靜態 PNG/JPEG，最大 20 MiB、8 百萬像素。回傳本機檔案、尺寸、警告及來源記錄。使用 sosoapi_upload_asset 與回傳的 upload_arguments 儲存前，請先檢查確切檔案。不會發布。

## 設定與傳輸方式

設定：core、full

傳輸方式：stdio

選擇 core 或 full 以控制用戶端顯示的工具；這不會變更權限。本機檔案上傳需要 stdio，無法透過 HTTP 使用。設定 SOSOAPI_OUTPUT_SCHEMAS=1 可在探索結果加入輸出結構描述。無論是否啟用此設定，工具皆會回傳結構化結果。

## 權限與副作用

註解幫助用戶端描述工具。每次呼叫仍會檢查使用者身分驗證、角色、資源存取和能力授權。

```json
{
  "readOnlyHint": false,
  "destructiveHint": false,
  "idempotentHint": false,
  "openWorldHint": false
}
```

`/assets-api/get` — agent:operate；synchronous_http_response

## 輸入欄位

```json
{
  "type": "object",
  "properties": {
    "workspace_id": {
      "type": "string",
      "format": "uuid"
    },
    "source_asset_id": {
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 9007199254740991
    },
    "outputs": {
      "minItems": 1,
      "maxItems": 4,
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "version": {
            "type": "number",
            "enum": [
              1
            ]
          },
          "destination": {
            "type": "string",
            "enum": [
              "facebook-feed-square",
              "facebook-feed-landscape",
              "instagram-feed-square",
              "instagram-feed-portrait"
            ]
          },
          "operation": {
            "type": "string",
            "enum": [
              "crop",
              "pad",
              "resize"
            ]
          },
          "focal_point": {
            "type": "object",
            "properties": {
              "x": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "y": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "x",
              "y"
            ],
            "additionalProperties": false
          },
          "background": {
            "type": "string",
            "pattern": "^#[0-9a-fA-F]{6}$"
          }
        },
        "required": [
          "version",
          "destination",
          "operation",
          "focal_point",
          "background"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "workspace_id",
    "source_asset_id",
    "outputs"
  ],
  "additionalProperties": false
}
```

## 結構化輸出

此 schema 描述成功工具結果中的 structuredContent。MCP 回應也包含 content，並可能在呼叫失敗時設定 isError。對於發布，請讀取貼文的最終結果，不要把已接受的請求或文字回應當作確認。連結的 API 操作說明了權限和重試規則。

```json
{
  "type": "object",
  "properties": {
    "stage": {
      "type": "string",
      "enum": [
        "ready",
        "failed"
      ]
    },
    "output_directory": {
      "type": "string"
    },
    "manifest_path": {
      "type": "string"
    },
    "preview_path": {
      "type": "string"
    },
    "retryable": {
      "type": "boolean"
    }
  },
  "required": [
    "stage"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": {}
}
```

## 工具呼叫範例

這些範例使用已依結構描述檢查的虛構值。請將 ID 替換為您有權使用的 ID、將媒體替換為已就緒素材，並將日期替換為已確認的發布時間。提交寫入前，請檢查帳號資格。本頁不會傳送 API 請求。

```json
{
  "name": "sosoapi_prepare_asset_images",
  "arguments": {
    "workspace_id": "11111111-1111-4111-8111-111111111111",
    "source_asset_id": 42,
    "outputs": [
      {
        "version": 1,
        "destination": "facebook-feed-square",
        "operation": "pad",
        "focal_point": {
          "x": 0.5,
          "y": 0.5
        },
        "background": "#ffffff"
      }
    ]
  }
}
```

structuredContent

```json
{
  "stage": "ready",
  "output_directory": "/tmp/sosoapi-preparation-example",
  "manifest_path": "/tmp/sosoapi-preparation-example/manifest.json",
  "preview_path": "/tmp/sosoapi-preparation-example/preview.html",
  "images": [
    {
      "file_path": "/tmp/sosoapi-preparation-example/01-facebook-feed-square.jpg",
      "width": 1080,
      "height": 1080,
      "cropped": false,
      "upscaled": false
    }
  ]
}
```

## 底層 API 操作

- [/assets-api/get](https://sosoapi.ai/zh-tw/docs/api/assets-api-get)