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

# Get Fusion API spec as JSON



## OpenAPI

````yaml /api-reference/4.2/service-swagger.json get /swagger
openapi: 3.0.0
info:
  version: 4.2.6-rc1
  title: Fusion Service swagger
servers:
  - url: /api/apollo/
security: []
tags:
  - name: swagger
paths:
  /swagger:
    get:
      tags:
        - 4.2 Swagger API
      summary: Get Fusion API spec as JSON
      operationId: allJson
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                type: string

````