# Source: https://gofastmcp.com/python-sdk/fastmcp-utilities-openapi-director.md

> ## Documentation Index
> Fetch the complete documentation index at: https://gofastmcp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# director

# `fastmcp.utilities.openapi.director`

Request director using openapi-core for stateless HTTP request building.

## Classes

### `RequestDirector` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/openapi/director.py#L16" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

Builds httpx.Request objects from HTTPRoute and arguments using openapi-core.

**Methods:**

#### `build` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/openapi/director.py#L23" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python  theme={"theme":{"light":"snazzy-light","dark":"dark-plus"}}
build(self, route: HTTPRoute, flat_args: dict[str, Any], base_url: str = 'http://localhost') -> httpx.Request
```

Constructs a final httpx.Request object, handling all OpenAPI serialization.

**Args:**

* `route`: HTTPRoute containing OpenAPI operation details
* `flat_args`: Flattened arguments from LLM (may include suffixed parameters)
* `base_url`: Base URL for the request

**Returns:**

* httpx.Request: Properly formatted HTTP request