An API explorer for RESTful Hypermedia APIs using HAL
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HAL Explorer

Build Status MIT

With HAL Explorer you can browse and explore HAL based RESTful Hypermedia APIs. HAL Explorer was inspired by Mike Kelly’s HAL-Browser.


HAL Explorer screenshot


  • Responsive design

  • Syntax highlighted response body

  • Custom request headers

  • Bootswatch themes

  • 2 layouts

  • API URL, theme, layout and request headers stored in URL fragment

  • Support for Spring Data Rest profiles to populate properties in request editor


You can play with a running demo here. I host this demo at Heroku, so please give it a little time to warm up (This might take up to 1 minute).

Development Server

Run npm start for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.


Run npm run build to build the project in production mode. The build artifacts will be stored in the dist/ directory.

Gradle/Java Build Support

If you have Java installed, you can also build the project with Gradle. The Gradle build will install node.js locally in the project directory. Run ./gradlew build to build the project in production mode. The build artifacts will be stored in the dist/ directory.

Integration in your Backends

If you want to use a released version of HAL Explorer in a Java based project, you could define a dependency to the HAL Explorer WebJar.




compile 'org.webjars:hal-explorer:0.9.5'

When you use the WebJar with Spring Boot, you can access the HAL Explorer at /webjars/hal-explorer/0.9.5/index.html. The easiest way to integrate the upstream version of HAL Explorer into your backend would be to clone this Git repo, do a production build and then copy the content of the dist folder to a location accessible by your backend server. When you use Spring Boot, a good location in your projects source tree would be src/main/java/resources/static/hal-explorer. See for a concrete integration example.

Running Tests

Run npm test to run the unit test suite against your default browser, run npm run test-headless to run the unit test suite against headless Chrome.

To run the e2e tests you must have Docker installed. The e2e tests start a real Spring Boot based backend in a Docker container which is then used by HAL Explorer. Run npm run e2e to run the e2e test suite against your default browser. Take a look at package.json for more test options.