# InferToolInput

# Type Alias: InferToolInput\<T\>

```ts
type InferToolInput<T> = T extends object ? TInput extends StandardJSONSchemaV1<infer TInferred, unknown> ? TInferred : TInput extends JSONSchema ? unknown : unknown : unknown;
```

Defined in: [activities/chat/tools/tool-definition.ts:68](https://github.com/TanStack/ai/blob/main/packages/typescript/ai/src/activities/chat/tools/tool-definition.ts#L68)

Extract the input type from a tool (inferred from Standard JSON Schema, or `unknown` for plain JSONSchema)

## Type Parameters

### T

`T`