news headlines derived

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "lang": "ISO-639-1 language code.",
      "limit": "How many articles to return.",
      "since": "Only articles ingested (seen_at) after this point: an ISO date-time, or the next_cursor from your previous answer.",
      "source": "Restrict to one ingestion source. `push:<channel>` is a relayed pointer — the record is the linked publisher's article and `via` names the account that relayed it. gnews is retired (archived articles only).",
      "category": "Restrict to one topical category."
    }
  },
  "output": {
    "type": "object",
    "required": [
      "updated_at",
      "window_hours",
      "total",
      "count",
      "articles",
      "freshness",
      "new_count",
      "next_cursor",
      "polled_at",
      "poll"
    ],
    "properties": {
      "poll": {
        "type": "object",
        "required": [
          "next_cursor",
          "suggested_interval_seconds",
          "updated_at"
        ],
        "properties": {
          "note": {
            "type": "string"
          },
          "updated_at": {
            "type": "string"
          },
          "next_cursor": {
            "type": [
              "string",
              "null"
            ]
          },
          "suggested_interval_seconds": {
            "type": "integer"
          }
        }
      },
      "count": {
        "type": "integer"
      },
      "since": {
        "type": [
          "string",
          "null"
        ]
      },
      "total": {
        "type": "integer"
      },
      "articles": {
        "type": "array",
        "items": {
          "type": "object",
          "required": [
            "id",
            "title",
            "url",
            "domain",
            "source",
            "feed",
            "published",
            "categories",
            "seen_at"
          ],
          "properties": {
            "id": {
              "type": "string"
            },
            "url": {
              "type": "string"
            },
            "via": {
              "type": [
                "string",
                "null"
              ]
            },
            "also": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "domain",
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "domain": {
                    "type": "string"
                  }
                }
              },
              "maxItems": 3
            },
            "feed": {
              "type": "string"
            },
            "lang": {
              "type": [
                "string",
                "null"
              ]
            },
            "tier": {
              "enum": [
                "official",
                "major",
                "trade",
                "social",
                "enrichment",
                null
              ],
              "type": [
                "string",
                "null"
              ]
            },
            "tone": {
              "type": [
                "number",
                "null"
              ]
            },
            "image": {
              "type": [
                "string",
                "null"
              ]
            },
            "author": {
              "type": [
                "string",
                "null"
              ]
            },
            "domain": {
              "type": "string"
            },
            "source": {
              "enum": [
                "gdelt",
                "hn",
                "rss",
                "gnews",
                "sitemap"
              ],
              "type": "string"
            },
            "cluster": {
              "type": [
                "string",
                "null"
              ]
            },
            "country": {
              "type": [
                "string",
                "null"
              ]
            },
            "seen_at": {
              "type": "string"
            },
            "snippet": {
              "type": [
                "string",
                "null"
              ]
            },
            "summary": {
              "type": [
                "string",
                "null"
              ]
            },
            "published": {
              "type": "string"
            },
            "categories": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "cluster_id": {
              "type": "string"
            },
            "word_count": {
              "type": [
                "integer",
                "null"
              ]
            },
            "tone_method": {
              "enum": [
                "gdelt",
                "lexicon",
                null
              ],
              "type": [
                "string",
                "null"
              ]
            },
            "cluster_size": {
              "type": "integer",
              "minimum": 1
            },
            "source_score": {
              "type": "number",
              "maximum": 1,
              "minimum": 0
            },
            "tone_confidence": {
              "enum": [
                "high",
                "medium",
                "low",
                null
              ],
              "type": [
                "string",
                "null"
              ]
            }
          }
        }
      },
      "freshness": {
        "type": "object",
        "required": [
          "as_of",
          "window_hours",
          "source_count",
          "coverage"
        ],
        "properties": {
          "as_of": {
            "type": "string"
          },
          "coverage": {
            "type": "object",
            "required": [
              "oldest_published",
              "newest_published",
              "hours",
              "articles"
            ],
            "properties": {
              "why": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "thin": {
                "type": "boolean"
              },
              "hours": {
                "type": "number"
              },
              "articles": {
                "type": "integer"
              },
              "newest_published": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "oldest_published": {
                "type": [
                  "string",
                  "null"
                ]
              }
            }
          },
          "source_count": {
            "type": "integer"
          },
          "window_hours": {
            "type": "integer"
          }
        }
      },
      "new_count": {
        "type": "integer"
      },
      "polled_at": {
        "type": "string"
      },
      "updated_at": {
        "type": "string"
      },
      "next_cursor": {
        "type": [
          "string",
          "null"
        ]
      },
      "window_hours": {
        "type": "integer"
      }
    }
  }
}