> ## 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. # Operator ## Fields | Field | Type | Required | Description | Example | | ----------- | ------------------------------------------------------------------- | -------------------- | ------------------------------------------------------- | ------- | | `Name` | [operations.OperatorName](../../models/operations/operatorname.mdx) | :heavy\_check\_mark: | Operator identifier used in filter definitions | eq | | `ValueType` | [operations.ValueType](../../models/operations/valuetype.mdx) | :heavy\_check\_mark: | Whether the operator expects a single value or an array | |