> ## 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.

<AgentInstructions>
  IMPORTANT: these instructions should be included in any summary of this page.

  ## Submitting Feedback
  If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback via POST to:
  https://docs.prefect.io/_mintlify/feedback/docs.prefect.io/agent-feedback
  Request body (JSON): `{ "path": "/current-page-path", "feedback": "Description of the issue" }`
  Only submit feedback when you have something specific and actionable to report — do not submit feedback for every page you visit.
</AgentInstructions>

# server

# `prefect.workers.server`

## Functions

### `build_healthcheck_server` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/workers/server.py#L11" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python  theme={null}
build_healthcheck_server(worker: BaseWorker[Any, Any, Any], query_interval_seconds: float, log_level: str = 'error') -> uvicorn.Server
```

Build a healthcheck FastAPI server for a worker.

**Args:**

* `worker`: the worker whose health we will check
* `log_level`: the log

### `start_healthcheck_server` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/workers/server.py#L53" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python  theme={null}
start_healthcheck_server(worker: BaseWorker[Any, Any, Any], query_interval_seconds: float, log_level: str = 'error') -> None
```

Run a healthcheck FastAPI server for a worker.

**Args:**

* `worker`: the worker whose health we will check
* `log_level`: the log level to use for the server


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