> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prefect.io/llms.txt
> Use this file to discover all available pages before exploring further.
# server
# `prefect.runner.server`
## Functions
### `perform_health_check`
```python theme={null}
perform_health_check(runner: 'Runner', delay_threshold: int | None = None) -> Callable[..., JSONResponse]
```
### `run_count`
```python theme={null}
run_count(runner: 'Runner') -> Callable[..., int]
```
### `shutdown`
```python theme={null}
shutdown(runner: 'Runner') -> Callable[..., JSONResponse]
```
### `build_server`
```python theme={null}
build_server(runner: 'Runner') -> FastAPI
```
Build a FastAPI server for a runner.
**Args:**
* `runner`: the runner this server interacts with and monitors
### `start_webserver`
```python theme={null}
start_webserver(runner: 'Runner', log_level: str | None = None) -> None
```
Run a FastAPI server for a runner.
**Args:**
* `runner`: the runner this server interacts with and monitors
* `log_level`: the log level to use for the server
## Classes
### `RunnerGenericFlowRunRequest`