> ## Documentation Index > Fetch the complete documentation index at: https://gofastmcp.com/llms.txt > Use this file to discover all available pages before exploring further. # parser # `fastmcp.utilities.openapi.parser` OpenAPI parsing logic for converting OpenAPI specs to HTTPRoute objects. ## Functions ### `parse_openapi_to_http_routes` ```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` Unified parser for OpenAPI schemas with generic type parameters to handle both 3.0 and 3.1. **Methods:** #### `parse` ```python theme={"theme":{"light":"snazzy-light","dark":"dark-plus"}} parse(self) -> list[HTTPRoute] ``` Parse the OpenAPI schema into HTTP routes.