Zhihu Articles Recommended Alongside an Article (First 12, by Article ID)

{
  "type": "object",
  "required": [
    "article_id",
    "limit",
    "offset"
  ],
  "properties": {
    "limit": {
      "enum": [
        "12"
      ],
      "type": "string",
      "description": "The page size requested. Only \"12\" is offered."
    },
    "offset": {
      "enum": [
        "0"
      ],
      "type": "string",
      "description": "The paging offset. Only \"0\", the first page, is offered."
    },
    "article_id": {
      "type": "string",
      "minLength": 1,
      "description": "The article's numeric ID: the number at the end of its zhuanlan.zhihu.com/p/ link."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "article": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string",
                "description": "The article's ID."
              },
              "title": {
                "type": "string",
                "description": "The article's title."
              },
              "author": {
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "The author's ID."
                  },
                  "name": {
                    "type": "string",
                    "description": "The author's display name."
                  },
                  "badge_v2": {
                    "type": "object",
                    "properties": {
                      "title": {
                        "type": "string",
                        "description": "The author's verification or badge label; empty when there is none."
                      }
                    }
                  },
                  "url_token": {
                    "type": "string",
                    "description": "The author's handle."
                  }
                },
                "description": "The article's author."
              },
              "column": {
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "The column's ID."
                  },
                  "title": {
                    "type": "string",
                    "description": "The column's title."
                  }
                },
                "description": "The column the article belongs to; absent when it is in none."
              },
              "created": {
                "type": "number",
                "description": "When it was published, as a Unix timestamp in seconds."
              },
              "updated": {
                "type": "number",
                "description": "When it was last edited, as a Unix timestamp in seconds."
              },
              "voteup_count": {
                "type": "number",
                "description": "Upvotes."
              }
            }
          }
        }
      },
      "description": "The recommended articles (12 in the capture)."
    }
  },
  "description": "The first page of recommended articles."
}