# MCPDuplicateToolNameError

# Class: MCPDuplicateToolNameError

Defined in: [packages/ai/src/activities/chat/mcp/manager.ts:4](https://github.com/TanStack/ai/blob/main/packages/ai/src/activities/chat/mcp/manager.ts#L4)

## Extends

- `Error`

## Constructors

### Constructor

```ts
new MCPDuplicateToolNameError(toolName): MCPDuplicateToolNameError;
```

Defined in: [packages/ai/src/activities/chat/mcp/manager.ts:5](https://github.com/TanStack/ai/blob/main/packages/ai/src/activities/chat/mcp/manager.ts#L5)

#### Parameters

##### toolName

`string`

#### Returns

`MCPDuplicateToolNameError`

#### Overrides

```ts
Error.constructor
```

## Properties

### toolName

```ts
readonly toolName: string;
```

Defined in: [packages/ai/src/activities/chat/mcp/manager.ts:5](https://github.com/TanStack/ai/blob/main/packages/ai/src/activities/chat/mcp/manager.ts#L5)