---
title: components
sidebarTitle: components
---

# `fastmcp.utilities.components`

## Classes

### `FastMCPComponent` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L21" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


Base class for FastMCP tools, prompts, resources, and resource templates.


**Methods:**

#### `key` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L52" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
key(self) -> str
```

The key of the component. This is used for internal bookkeeping
and may reflect e.g. prefixes or other identifiers. You should not depend on
keys having a certain value, as the same tool loaded from different
hierarchies of servers may have different keys.


#### `with_key` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L61" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
with_key(self, key: str) -> Self
```

#### `enable` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L73" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
enable(self) -> None
```

Enable the component.


#### `disable` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L77" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
disable(self) -> None
```

Disable the component.


#### `copy` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L81" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
copy(self) -> Self
```

Create a copy of the component.


### `MirroredComponent` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L86" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


Base class for components that are mirrored from a remote server.

Mirrored components cannot be enabled or disabled directly. Call copy() first
to create a local version you can modify.


**Methods:**

#### `enable` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L99" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
enable(self) -> None
```

Enable the component.


#### `disable` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L108" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
disable(self) -> None
```

Disable the component.


#### `copy` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/components.py#L117" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
copy(self) -> Self
```

Create a copy of the component that can be modified.

