淘宝和 1688 的拍立淘 API 是基于图像识别技术的服务接口，可通过上传图片在平台商品数据库中搜索相似或相同商品。以下是其相关介绍：
- 获取 API 权限：
- 注册与创建应用：在淘宝开放平台或 1688 开放平台注册账号并成为开发者，然后创建一个新的应用，以获取 API Key 和 API Secret。
- 授权权限：根据平台要求，为账号授权使用拍立淘 API 的权限。
- API 调用方式：
- 请求参数：通常使用 HTTP GET 或 POST 方法调用拍立淘按图搜索 API 接口。请求参数包括 key（应用 key）、secret（应用 secret）、imgid（图片的 URL 或 ID），还可根据需要添加 cat（可选的商品类目 ID，用于限定搜索范围）、page（可选的分页参数，指定返回结果的页码）等参数。
- 请求示例：以淘宝的按图搜索商品 API 接口 item_search_img 为例，请求参数可能如下：key = 您自己的 apiKey&secret = 您自己的 apiSecret&api_name=item_search_img&imgid = 图片的 URL。
- 返回结果：API 将返回一个 JSON 格式的响应，其中包含与上传图片相似的商品信息，如商品 ID、标题、图片 URL、价格、销量、店铺信息、商品详情链接以及相似度得分等。
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