Zhihu Article & Answer Search (by Keyword)

{
  "type": "object",
  "required": [
    "keyword"
  ],
  "properties": {
    "sort": {
      "type": "string",
      "description": "Sort"
    },
    "limit": {
      "type": "string",
      "default": "20",
      "description": "Number of articles per page"
    },
    "offset": {
      "type": "string",
      "default": "0",
      "description": "Offset"
    },
    "keyword": {
      "type": "string",
      "description": "Search Keywords"
    },
    "vertical": {
      "type": "string",
      "description": "Vertical Type"
    },
    "search_source": {
      "type": "string",
      "default": "Normal",
      "description": "Search Source"
    },
    "time_interval": {
      "type": "string",
      "description": "Time Interval"
    },
    "vertical_info": {
      "type": "string",
      "description": "Vertical Info"
    },
    "search_hash_id": {
      "type": "string",
      "description": "Search Hash ID"
    },
    "show_all_topics": {
      "type": "integer",
      "default": 0,
      "description": "Show all topics"
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": [
              "string",
              "number"
            ],
            "description": "Usually a string, but a bare number on some result types (e.g. the ai_zhida/EBook-material card types)."
          },
          "type": {
            "type": "string",
            "description": "The result card's family, e.g. 'search_result' or 'ai_zhida'."
          },
          "index": {
            "type": "number",
            "description": "Position of this result on the page."
          },
          "object": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string"
              },
              "url": {
                "type": [
                  "string",
                  "null"
                ],
                "description": "Whether this result links to a Zhihu page. The link itself is withheld -- value is always `null` regardless of what the upstream data contains."
              },
              "flag": {
                "type": "object",
                "properties": {
                  "flag_text": {
                    "type": "string",
                    "description": "e.g. a trending/highlight label."
                  }
                },
                "additionalProperties": true
              },
              "type": {
                "type": "string",
                "description": "e.g. 'article', 'answer', 'ai_zhida'."
              },
              "query": {
                "type": "string",
                "description": "Echo of the search keyword. Only observed on the ai_zhida digest card, where it stands in for the missing title/content fields."
              },
              "title": {
                "type": "string"
              },
              "content": {
                "type": [
                  "string",
                  "null"
                ],
                "description": "The body text/HTML of the article or answer, when this is a plain content result. Not present on non-article card types."
              },
              "excerpt": {
                "type": "string"
              },
              "zfav_count": {
                "type": "number",
                "description": "An alternate favorites-style count."
              },
              "description": {
                "type": "string"
              },
              "answer_count": {
                "type": "number"
              },
              "created_time": {
                "type": "number",
                "description": "Unix seconds."
              },
              "is_anonymous": {
                "type": "boolean"
              },
              "updated_time": {
                "type": "number",
                "description": "Unix seconds."
              },
              "visits_count": {
                "type": "number"
              },
              "voteup_count": {
                "type": "number"
              },
              "comment_count": {
                "type": "number"
              },
              "follower_count": {
                "type": "number",
                "description": "For question-type results."
              },
              "favorites_count": {
                "type": "number"
              },
              "follower_count_text": {
                "type": "string"
              },
              "is_zhi_plus_content": {
                "type": "boolean",
                "description": "True when the content is gated behind Zhihu's paid membership."
              }
            },
            "description": "The underlying content. Shape varies by `object.type` (e.g. 'article', 'answer', 'ai_zhida') -- most of these fields are absent on non-article card types (e.g. an ai_zhida entry carries only `type` and `query`).",
            "additionalProperties": true
          },
          "highlight": {
            "type": [
              "object",
              "null"
            ],
            "properties": {
              "title": {
                "type": "string"
              },
              "description": {
                "type": "string"
              }
            },
            "description": "The matched keyword highlighted in context with `<em>` tags. Observed `null` on the ai_zhida digest card.",
            "additionalProperties": true
          },
          "query_list": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "query": {
                  "type": "string"
                }
              },
              "additionalProperties": true
            },
            "description": "Related search terms/suggestions attached to this result."
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per search hit. Most entries are `type: \"search_result\"` articles/answers (most fields below populated); an `ai_zhida` AI-answer-digest card and other specialized card types can also appear with only `type`, `index`, and `object.query` populated -- e.g. as the first result for a nonsense keyword."
    },
    "paging": {
      "type": "object",
      "properties": {
        "is_end": {
          "type": "boolean",
          "description": "True when this is the last page of results."
        }
      },
      "description": "Pagination state for this page of results.",
      "additionalProperties": true
    },
    "domain_info": {
      "type": "object",
      "properties": {
        "first_category": {
          "type": "string",
          "description": "The topic domain this search matched, e.g. a broad subject label. Present for some queries (e.g. popular keywords) -- may not appear for every input."
        }
      },
      "additionalProperties": true
    }
  },
  "description": "The search result page. A search that matches nothing recognizable still returns this same shape with a short or low-relevance `data` array -- it does not collapse to `{}`.",
  "additionalProperties": true
}