列出 Google Fonts API 中的所有可变字体？

我需要通过 Google Fonts API 获取所有可用的可变字体的列表。

我可以从这个端点获取所有字体名称。您可以添加一些参数，但我认为其中不包括可变字体过滤器：

我认为在进行 API 调用后我无法过滤结果。这里的“Open Sans”是一种可变字体，但我在响应中没有看到任何表明这一点的内容。

{
      "family": "Open Sans",
      "variants": [
        "300",
        "regular",
        "500",
        "600",
        "700",
        "800",
        "300italic",
        "italic",
        "500italic",
        "600italic",
        "700italic",
        "800italic"
      ],
      "subsets": [
        "cyrillic",
        "cyrillic-ext",
        "greek",
        "greek-ext",
        "hebrew",
        "latin",
        "latin-ext",
        "vietnamese"
      ],
      "version": "v34",
      "lastModified": "2022-09-22",
      "files": {
        "300": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4nY1M2xLER.ttf",
        "regular": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4nY1M2xLER.ttf",
        "500": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjr0C4nY1M2xLER.ttf",
        "600": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4nY1M2xLER.ttf",
        "700": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4nY1M2xLER.ttf",
        "800": "http://fonts.gstatic.com/s/opensans/v34/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4nY1M2xLER.ttf",
        "300italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk5hkaVcUwaERZjA.ttf",
        "italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkaVcUwaERZjA.ttf",
        "500italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk_RkaVcUwaERZjA.ttf",
        "600italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0RkxhjaVcUwaERZjA.ttf",
        "700italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0RkyFjaVcUwaERZjA.ttf",
        "800italic": "http://fonts.gstatic.com/s/opensans/v34/memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk0ZjaVcUwaERZjA.ttf"
      },
      "category": "sans-serif",
      "kind": "webfonts#webfont"
    },

有this https://fonts.google.com/variablefonts列出所有可变字体的网站。在开发者控制台（F12）中，我看到它下载了这个文件：

https://fonts.google.com/metadata/fonts https://fonts.google.com/metadata/fonts

该文件包含所有字体。如果字体的“axes”数组不为空，那么它肯定是可变字体。也许您必须检查其他属性名称（我对可变字体不太熟悉）。