{
  "name": "preview_nickname",
  "description": "Preview a fictional display-name input without saving an account.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "nickname": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "null"
          }
        ]
      }
    },
    "additionalProperties": false,
    "required": [
      "nickname"
    ]
  },
  "annotations": {
    "readOnlyHint": true
  }
}