# AI_NoSuchToolError

This error occurs when a model tries to call an unavailable tool.

## Properties

- `toolName`: The name of the tool that was not found
- `availableTools`: Array of available tool names
- `message`: The error message

## Checking for this Error

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

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

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


## Navigation

- [AI_APICallError](/v4/docs/reference/ai-sdk-errors/ai-api-call-error)
- [AI_DownloadError](/v4/docs/reference/ai-sdk-errors/ai-download-error)
- [AI_EmptyResponseBodyError](/v4/docs/reference/ai-sdk-errors/ai-empty-response-body-error)
- [AI_InvalidArgumentError](/v4/docs/reference/ai-sdk-errors/ai-invalid-argument-error)
- [AI_InvalidDataContentError](/v4/docs/reference/ai-sdk-errors/ai-invalid-data-content-error)
- [AI_InvalidDataContent](/v4/docs/reference/ai-sdk-errors/ai-invalid-data-content)
- [AI_InvalidMessageRoleError](/v4/docs/reference/ai-sdk-errors/ai-invalid-message-role-error)
- [AI_InvalidPromptError](/v4/docs/reference/ai-sdk-errors/ai-invalid-prompt-error)
- [AI_InvalidResponseDataError](/v4/docs/reference/ai-sdk-errors/ai-invalid-response-data-error)
- [AI_InvalidToolArgumentsError](/v4/docs/reference/ai-sdk-errors/ai-invalid-tool-arguments-error)
- [AI_JSONParseError](/v4/docs/reference/ai-sdk-errors/ai-json-parse-error)
- [AI_LoadAPIKeyError](/v4/docs/reference/ai-sdk-errors/ai-load-api-key-error)
- [AI_LoadSettingError](/v4/docs/reference/ai-sdk-errors/ai-load-setting-error)
- [AI_MessageConversionError](/v4/docs/reference/ai-sdk-errors/ai-message-conversion-error)
- [AI_NoAudioGeneratedError](/v4/docs/reference/ai-sdk-errors/ai-no-audio-generated-error)
- [AI_NoContentGeneratedError](/v4/docs/reference/ai-sdk-errors/ai-no-content-generated-error)
- [AI_NoImageGeneratedError](/v4/docs/reference/ai-sdk-errors/ai-no-image-generated-error)
- [AI_NoObjectGeneratedError](/v4/docs/reference/ai-sdk-errors/ai-no-object-generated-error)
- [AI_NoOutputSpecifiedError](/v4/docs/reference/ai-sdk-errors/ai-no-output-specified-error)
- [AI_NoSuchModelError](/v4/docs/reference/ai-sdk-errors/ai-no-such-model-error)
- [AI_NoSuchProviderError](/v4/docs/reference/ai-sdk-errors/ai-no-such-provider-error)
- [AI_NoSuchToolError](/v4/docs/reference/ai-sdk-errors/ai-no-such-tool-error)
- [AI_NoTranscriptGeneratedError](/v4/docs/reference/ai-sdk-errors/ai-no-transcript-generated-error)
- [AI_RetryError](/v4/docs/reference/ai-sdk-errors/ai-retry-error)
- [AI_TooManyEmbeddingValuesForCallError](/v4/docs/reference/ai-sdk-errors/ai-too-many-embedding-values-for-call-error)
- [ToolCallRepairError](/v4/docs/reference/ai-sdk-errors/ai-tool-call-repair-error)
- [AI_ToolExecutionError](/v4/docs/reference/ai-sdk-errors/ai-tool-execution-error)
- [AI_TypeValidationError](/v4/docs/reference/ai-sdk-errors/ai-type-validation-error)
- [AI_UnsupportedFunctionalityError](/v4/docs/reference/ai-sdk-errors/ai-unsupported-functionality-error)


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