> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # ValueType Whether the operator expects a single value or an array ## Example Usage ```python theme={null} from openrouter.operations import ValueType # Open enum: unrecognized values are captured as UnrecognizedStr value: ValueType = "scalar" ``` ## Values This is an open enum. Unrecognized values will not fail type checks. * `"scalar"` * `"array"`