{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/sanity/json-schema/document.json",
  "title": "Sanity Document",
  "description": "Base schema for a Sanity Content Lake document. All documents in Content Lake include system-managed underscore-prefixed fields.",
  "type": "object",
  "required": ["_id", "_type"],
  "properties": {
    "_id": {
      "type": "string",
      "description": "Unique document identifier. Drafts are prefixed with 'drafts.'",
      "examples": ["abc123", "drafts.abc123"]
    },
    "_type": {
      "type": "string",
      "description": "Document type identifier matching the schema definition",
      "examples": ["post", "author", "page", "sanity.imageAsset"]
    },
    "_rev": {
      "type": "string",
      "description": "Revision identifier, updated on each mutation"
    },
    "_createdAt": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of document creation"
    },
    "_updatedAt": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of last document update"
    }
  },
  "additionalProperties": true
}