ToolArgumentValidator

Checks raw tool-call arguments against the JSON Schema a tool sent to the provider.

The default implementation supports exactly the subset core's SchemaDefinition emits: type (a string or an array of strings), description (ignored), properties, required, additionalProperties (boolean), enum, minLength, maxLength, minimum, maximum, exclusiveMinimum, exclusiveMaximum, multipleOf, items, minItems, maxItems and uniqueItems. Any other keyword, and a supported one with a malformed value (a bound that is not a number, a length or count that is not a non-negative whole number, a non-boolean uniqueItems, a required that is not an array of strings, an enum that is not an array, properties that is not an object), is reported by unsupported so a tool set can refuse it when it is built, rather than silently skip the constraint on every call.