openapi: 3.0.0
info:
  title: Path-Altering Reverse Proxy Example
  version: '1.0'
servers:
  - url: /openapi
paths:
  /hello:
    get:
      summary: say hi
      operationId: app.hello
      responses:
        '200':
          description: hello
          content:
            text/plain:
              schema:
                type: string