---
title: server
sidebarTitle: server
---

# `prefect.runner.server`

## Functions

### `perform_health_check` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L40" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
perform_health_check(runner: 'Runner', delay_threshold: int | None = None) -> Callable[..., JSONResponse]
```

### `run_count` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L66" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
run_count(runner: 'Runner') -> Callable[..., int]
```

### `shutdown` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L74" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
shutdown(runner: 'Runner') -> Callable[..., JSONResponse]
```

### `build_server` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L82" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
build_server(runner: 'Runner') -> FastAPI
```


Build a FastAPI server for a runner.

**Args:**
- `runner`: the runner this server interacts with and monitors


### `start_webserver` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L102" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
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` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/runner/server.py#L34" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
