---
title: prefab
sidebarTitle: prefab
---

# `fastmcp.utilities.prefab`


Lazy helpers for FastMCP's optional Prefab UI integration.

## Functions

### `prefab_available` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/prefab.py#L12" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
prefab_available() -> bool
```


Return whether Prefab UI is installed without importing it.


### `is_prefab_type` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/prefab.py#L42" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
is_prefab_type(candidate: Any) -> bool
```


Return whether a type is a Prefab app or component type.


### `is_prefab_app` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/prefab.py#L51" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
is_prefab_app(value: Any) -> bool
```


Return whether a value is a Prefab app.


### `is_prefab_component` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/prefab.py#L60" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
is_prefab_component(value: Any) -> bool
```


Return whether a value is a Prefab component.


### `prefab_app_from_component` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/prefab.py#L69" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
prefab_app_from_component(component: Any) -> Any
```


Wrap a Prefab component in a Prefab app.

