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17.2.1 • Public • Published


This is a OpenAPI (aka Swagger) plug-in for Hapi When installed it will self document the API interface in a project.

Maintainers Wanted GitHub Workflow Status npm downloads MIT license


Version Hapi Joi Node Release Notes
17.x >=20.0.0 @hapi/hapi >=17.0.0 joi >=16 Release
16.x >=20.0.0 @hapi/hapi >=17.0.0 joi >=14 #795
15.x >=20.0.0 @hapi/hapi >=17.0.0 joi >=14 #782
14.x >=19.0.0 @hapi/hapi >=17.0.0 joi >=12 #680
13.x >=19.0.0 @hapi/hapi >=17.0.0 @hapi/joi >=12 #660
12.x >=19.0.0 @hapi/hapi >=17.0.0 @hapi/joi >=12 #644
11.x >=18.4.0 @hapi/hapi >=16.0.0 @hapi/joi >=8 #631
10.x >=18.3.1 @hapi/hapi >=14.0.0 @hapi/joi >=8 #587
9.x >=17 hapi <14.0.0 >=8 #487
7.x <17 hapi ??? ??? #325


You can add the module to your Hapi using npm:

> npm install hapi-swagger --save

hapi-swagger no longer bundles joi to fix #648. Install hapi-swagger with peer dependencies using:

npx install-peerdeps hapi-swagger

If you want to view the documentation from your API you will also need to install the inert and vision plugs-ins which support templates and static content serving.

> npm install @hapi/inert --save
> npm install @hapi/vision --save


Quick start

In your Hapi apps please check the main JavaScript file and add the following code to already created a Hapi server object. You will also add the routes for you API as describe on hapi website.

const Hapi = require('@hapi/hapi');
const Inert = require('@hapi/inert');
const Vision = require('@hapi/vision');
const HapiSwagger = require('hapi-swagger');
const Pack = require('./package');

(async () => {
    const server = Hapi.server({
        port: 3000,
        host: 'localhost'

    const swaggerOptions = {
        info: {
                title: 'Test API Documentation',
                version: Pack.version,

    await server.register([
            plugin: HapiSwagger,
            options: swaggerOptions

    try {
        await server.start();
        console.log('Server running at:', server.info.uri);
    } catch(err) {


Tagging your API routes

As a project may be a mixture of web pages and API endpoints you need to tag the routes you wish Swagger to document. Simply add the tags: ['api'] property to the route object for any endpoint you want documenting.

You can even specify more tags and then later generate tag-specific documentation. If you specify tags: ['api', 'foo'], you can later use /documentation?tags=foo to load the documentation on the HTML page (see next section).

    method: 'GET',
    path: '/todo/{id}/',
    options: {
        handler: handlers.getToDo,
        description: 'Get todo',
        notes: 'Returns a todo item by the id passed in the path',
        tags: ['api'], // ADD THIS TAG
        validate: {
            params: Joi.object({
                id : Joi.number()
                        .description('the id for the todo item'),

Once you have tagged your routes start the application. The plugin adds a page into your site with the route /documentation, so the the full URL for the above options would be http://localhost:3000/documentation.


hapi-swagger exports its own typescript definition file that can be used when registering the plugin with Hapi. See example below:

Install Typescript Definition Files

npm i @types/hapi__hapi @types/hapi__inert @types/hapi__joi @types/hapi__vision @types/node hapi-swagger --save-dev

Register Plugin with Typescript

import * as Hapi from '@hapi/hapi';
import * as HapiSwagger from 'hapi-swagger';

// code omitted for brevity

const swaggerOptions: HapiSwagger.RegisterOptions = {
    info: {
        title: 'Test API Documentation'

const plugins: Array<Hapi.ServerRegisterPluginObject<any>> = [
        plugin: Inert
        plugin: Vision
        plugin: HapiSwagger,
        options: swaggerOptions

await server.register(plugins);


Read the contributing guidelines for details.


I would like to thank all that have contributed to the project over the last couple of years. This is a hard project to maintain, getting Hapi to work with Swagger is like putting a round plug in a square hole. Without the help of others it would not be possible.



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  • glennjones
  • robmcguinness