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

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# parser

# `fastmcp.utilities.openapi.parser`

OpenAPI parsing logic for converting OpenAPI specs to HTTPRoute objects.

## Functions

### `parse_openapi_to_http_routes` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/openapi/parser.py#L55" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python  theme={"theme":{"light":"snazzy-light","dark":"dark-plus"}}
parse_openapi_to_http_routes(openapi_dict: dict[str, Any]) -> list[HTTPRoute]
```

Parses an OpenAPI schema dictionary into a list of HTTPRoute objects
using the openapi-pydantic library.

Supports both OpenAPI 3.0.x and 3.1.x versions.

## Classes

### `OpenAPIParser` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/openapi/parser.py#L109" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

Unified parser for OpenAPI schemas with generic type parameters to handle both 3.0 and 3.1.

**Methods:**

#### `parse` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/openapi/parser.py#L659" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python  theme={"theme":{"light":"snazzy-light","dark":"dark-plus"}}
parse(self) -> list[HTTPRoute]
```

Parse the OpenAPI schema into HTTP routes.