---
lang: en
title: 'API docs: openapi-v3.controllerspec'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.openapi-v3.controllerspec.html
---

<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[Home](./index.md) &gt; [@loopback/openapi-v3](./openapi-v3.md) &gt; [ControllerSpec](./openapi-v3.controllerspec.md)

## ControllerSpec interface

<b>Signature:</b>

```typescript
export interface ControllerSpec 
```

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [basePath](./openapi-v3.controllerspec.basepath.md) | <code>string</code> | The base path on which the Controller API is served. If it is not included, the API is served directly under the host. The value MUST start with a leading slash (/). |
|  [components](./openapi-v3.controllerspec.components.md) | <code>ComponentsObject</code> | OpenAPI components.schemas generated from model metadata |
|  [paths](./openapi-v3.controllerspec.paths.md) | <code>PathObject</code> | The available paths and operations for the API. |


