{
  "$schema": "https://json-schema.org/schema#",
  "type": "object",
  "properties": {
    "url": {
      "description": "The URL to access the project card.",
      "type": ["null", "string"]
    },
    "project_url": {
      "description": "The URL to access the project that includes the project card.",
      "type": ["null", "string"]
    },
    "id": {
      "description": "The unique identifier of the project card.",
      "type": ["null", "integer"]
    },
    "node_id": {
      "description": "The unique Node ID of the project card.",
      "type": ["null", "string"]
    },
    "note": {
      "description": "Any notes associated with the project card.",
      "type": ["null", "string"]
    },
    "archived": {
      "description": "Indicates whether the project card is archived or not.",
      "type": ["null", "boolean"]
    },
    "creator": {
      "description": "The user who created the project card.",
      "$ref": "user.json"
    },
    "created_at": {
      "description": "The date and time when the project card was created.",
      "type": "string",
      "format": "date-time"
    },
    "updated_at": {
      "description": "The date and time when the project card was last updated.",
      "type": "string",
      "format": "date-time"
    },
    "column_url": {
      "description": "The URL to access the project column associated with the project card.",
      "type": ["null", "string"]
    },
    "content_url": {
      "description": "The URL that provides direct access to the project card's content.",
      "type": ["null", "string"]
    },
    "repository": {
      "description": "The repository to which the project card is linked.",
      "type": "string"
    },
    "project_id": {
      "description": "The unique identifier of the project to which the project card belongs.",
      "type": "integer"
    },
    "column_id": {
      "description": "The unique identifier of the project column that the project card belongs to.",
      "type": "integer"
    }
  }
}