# validate_tools_single_input

> **Function** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/agents/utils/validate_tools_single_input)

Validate tools for single input.

## Signature

```python
validate_tools_single_input(
    class_name: str,
    tools: Sequence[BaseTool],
) -> None
```

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `class_name` | `str` | Yes | Name of the class. |
| `tools` | `Sequence[BaseTool]` | Yes | List of tools to validate. |

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/02991cb4cf2063d51a07268edafb05fe53de1826/libs/langchain/langchain_classic/agents/utils.py#L6)