---
title: tool_transform
sidebarTitle: tool_transform
---

# `fastmcp.server.transforms.tool_transform`


Transform for applying tool transformations.

## Classes

### `ToolTransform` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/transforms/tool_transform.py#L16" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


Applies tool transformations to modify tool schemas.

Wraps ToolTransformConfig to apply argument renames, schema changes,
hidden arguments, and other transformations at the transform level.


**Methods:**

#### `list_tools` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/transforms/tool_transform.py#L64" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
list_tools(self, tools: Sequence[Tool]) -> Sequence[Tool]
```

Apply transforms to matching tools.


#### `get_tool` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/transforms/tool_transform.py#L75" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_tool(self, name: str, call_next: GetToolNext) -> Tool | None
```

Get tool by transformed name.

