Firebase Realtime Database Node

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://firebase.google.com/schemas/database/node.json",
  "title": "Firebase Realtime Database Node",
  "description": "Schema for a node in the Firebase Realtime Database, representing a JSON tree structure with optional rules and indexing.",
  "type": "object",
  "properties": {
    ".read": {
      "type": ["string", "boolean"],
      "description": "Security rule for read access"
    },
    ".write": {
      "type": ["string", "boolean"],
      "description": "Security rule for write access"
    },
    ".validate": {
      "type": "string",
      "description": "Validation rule for data written to this node"
    },
    ".indexOn": {
      "oneOf": [
        { "type": "string" },
        { "type": "array", "items": { "type": "string" } }
      ],
      "description": "Child keys to index for ordering and querying"
    }
  },
  "additionalProperties": {
    "$ref": "#/$defs/DatabaseValue"
  },
  "$defs": {
    "DatabaseValue": {
      "description": "A value stored in the Firebase Realtime Database",
      "oneOf": [
        { "type": "string" },
        { "type": "number" },
        { "type": "boolean" },
        { "type": "null" },
        {
          "type": "object",
          "additionalProperties": {
            "$ref": "#/$defs/DatabaseValue"
          }
        }
      ]
    }
  }
}