---
title: ToolCallRepairError
description: Learn how to fix AI SDK ToolCallRepairError
---

# ToolCallRepairError

This error occurs when there is a failure while attempting to repair an invalid tool call.
This typically happens when the AI attempts to fix either
a `NoSuchToolError` or `InvalidToolInputError`.

## Properties

- `originalError`: The original error that triggered the repair attempt (either `NoSuchToolError` or `InvalidToolInputError`)
- `message`: The error message
- `cause`: The underlying error that caused the repair to fail

## Checking for this Error

You can check if an error is an instance of `ToolCallRepairError` using:

```typescript
import { ToolCallRepairError } from 'ai';

if (ToolCallRepairError.isInstance(error)) {
  // Handle the error
}
```