Six months ago, when we launched our Web API, we provided twelve endpoints through which developers could retrieve Spotify catalog data. Today the API has 40 distinct endpoints and more are being added all the time. In this post, I’d like to take you on a brief tour of the API and show you some of the programs that have already been developed with it.
If you know someone who buy the Spotify family account, then you connect with us and share account information, use free Spotify premium service. Chances are you know any friends and family members who use Spotify family plan. Use Multiple Trial Accounts. One way to get Spotify premium free is to sign up for a 1-month free trial of Spotify. https://pxqavv.weebly.com/blog/spotify-wont-download-on-tweakbox. Login - Spotify. So after login into developer.spotify and filling out the form to get a application key, and agreeing to terms and hitting submit, the page just reloads, and i dont get a c key. I signed up using facebook, have a premium acount, got the login (numbers, since i got login using facebook) but i cant.
What is the Spotify Web API?
Our API is what is commonly known as a RESTful API. Basically it is an interface that programs can use to retrieve and manage Spotify data over the internet. The Web API uses the same HTTP protocol that’s used by every internet browser. In fact, you can access the API directly from your own browser. Try clicking this link and see what happens:
You should get back a page of data, in JSON format, which looks something like this:
(What you actually see depends a little on your browser settings and how it is set to handle JSON content. If you’re using Chrome, you can use the JSONView plugin to see a nicely formatted view of the content.)
What we have just done through our browser is to ask the Web API for information about an album — specifically the album with the Spotify ID “4aawyAB9vmqN3uQ7FjRGTy”. What we have got back is basic information about that album, including:
You can make similar calls through the Web API to retrieve information from the Spotify catalog about artists, tracks and playlists. There is a huge amount of data available, and the best part is that it’s free to access.
A Simple Search Application
Retrieving data in your browser like this is not particularly useful unless you just want to check that the API is working. The API is really designed to be accessed programmatically and the fact that it returns data in JSON (JavaScript Object Notation) format is very helpful in this regard. JSON is a common, language-independent format and code for parsing JSON data is readily available for a large variety of programming languages.
Let’s take a look at a simple program that uses the Web API. Here is a program that uses the Web API’s search endpoint to retrieve cover art:
This program uses HTML, CSS and JavaScript to do its work. Enter the name of an artist and see what happens.
Within the JavaScript, a call is made to the search endpoint passing the artist’s name that you entered and asking for any matching albums. When the JSON result comes back it’s parsed to extract the links to the albums. Then a second set of calls is made to get each album’s main cover art image.
The search endpoint that this program uses is one of the more popular endpoints in our Web API. Through that endpoint you can get information about more than 2 million artists, 4 million albums, 30 million tracks, and 1.5 billion playlists across all of Spotify’s 50-plus markets.
An Artist Explorer
Just by retrieving data through the Web API and presenting it to the user you can create interesting programs. Here’s an example that combines artist images with data about artist relationships, popularity, and top tracks to create a fascinating tool that encourages users to discover new artists and new music:
You can hover over an artist’s picture to hear 30 second clips of their music; click a picture to expand the tree; and enter an artist’s name or genre to “seed” a new tree. The artists are ranked by popularity, so clicking an artist towards the bottom of a column leads you ever on into hipster territory. In the right sidebar you can find links to the top tracks by the currently selected artist: hovering over a track lets you browse through the artists popular music, and clicking on a track opens the song in a Spotify player.
This application uses several popular Web API endpoints and makes use of several popular, useful, freely available JavaScript libraries: d3, Google Gauge Charts, geoplugin, and freegeoip.
The code for Artist Explorer is open-source and is available on GitHub. You can view the full source code to see how the program has been implemented and you can fork the existing project if you want to contribute to it. And, of course, you can copy parts of the code to use in your own projects.
Authentication & AuthorizationSpotify Web Api
It’s easy to retrieve data through the Web API but what about retrieving personal data about a user and managing that data? In this case we need to be a bit more careful. For one thing we need to securely identify the user and for another we need to get the user’s permission to access and manipulate their data. In this case we must use OAuth (an open standard for authorization) to get the job done.
Unlike our previous search example which we ran straight from our browser (and which, behind the scenes, used an HTTP GET request to do its business), a typical OAuth-based call to the Web API is a little more complex. We can show how such a call looks by showing it as a cURL command (cURL is a popular command-line tool for transferring data to and from a server):
In this example we using the Web API’s Create a playlist endpoint to create for user called “chris” a new public playlist with the name “NewPlaylist”. The name of the user is included in the URL, while the name of the playlist and its public/private status is specified in the body of the POST request.
Perhaps the most interesting thing here is the Bearer token (also called an “access token”) that we are passing in the header of the request. (That’s the string “QB0zg…eF9U”. It’s actually a long string of characters that encode information about the user and what access permissions the user has granted.) It’s necessary to pass a valid token in a request to this particular endpoint otherwise the request will fail.
So where did that access token come from?
Provisioning
To get an access token that a program can pass in calls to the Web API, the developer first needs to register the program at the Spotify Developer website. When the program has been registered, a Client ID and a Client Secret key will be generated and displayed on the application details page:
Those are two things that the developer will need to use in the code of their program. When the program is running, the ID and secret will be passed in calls to the Spotify Accounts service. It is the Spotify Accounts service that actually handles the authentication of the user and seeks the user’s permission to access data.
The Authorization Code Flow
Exactly how the program interacts with the Spotify Accounts service depends on which OAuth flow is being followed. There are three different flows available to developers, each designed to meet different needs. All three flows are all fully documented in our Web API Authorization Guide. Here we describe the most comprehensive flow: the Authorization Code flow.
This flow starts when the developer’s program makes a call to the Spotify Accounts service. Along with the call, the program passes along a list of “scopes“. The scopes define both what user data that the program wants to access and what it wants to do with that data. In response, the Spotify Accounts service displays to the user a list of the data that the program wants access to, based on the scopes. (The Spotify Accounts service also prompts the user to log in to Spotify, if necessary.)
When the user clicks “Okay”, the Spotify Accounts service returns to the developer’s program via a previously supplied callback address, passing a temporary code. The program can now use that code, along with its Client ID and Client secret, in a second call to the Spotify Accounts service to get an access token.
One extra advantage of using this flow — the Authorization Code flow — is that from this second call to the Accounts service, the program also gets back a “refresh token” which can be used later to refresh the access token when it expires. That means that it is possible to create long-running programs that only require the user to log in once the first time they are used.
(There is another hidden benefit of supplying access tokens in calls to the Web API, even to endpoints that do not require them: calls with access tokens get higher rate limits. If your program is likely to make many calls in quick succession, it is a good idea to supply a valid access token to make sure that all those calls get through.)
A Playlist Miner
When a program can supply a valid access token it has more power to do some really interesting things through the Web API. For one thing, it can now retrieve and manage a user’s playlists, and it can create new ones. Let’s look at a web application that does just that:
When you open this application you will see that it first asks you to “Log in with Spotify”. You can log in with either a free or a premium Spotify account, it does not matter which. When the main page opens, enter a keyword string, like “workout” in the box, then click “Find Playlists”:
Playlist Miner uses the Web API’s Search for a playlist endpoint to retrieve playlists from Spotify that include the entered keyword in their title. Up to 1000 playlists are retrieved. Next Playlist Miner retrieves the tracks for those playlists using the Get a playlist’s tracks endpoint and starts counting how often each track occurs, ranking them by frequency.
(As an aside, whenever I have demonstrated this application it is at this point that people start trying to “shout” their favorite artists and songs to the top of the list!)
When Playlist Miner has completed its analysis, it offers you the option to save the 100-track playlist it has made to Spotify. If you choose that option, the application uses the Create a playlist and the Add tracks to a playlist endpoints (both of which require an OAuth access token) to add the playlist to your Spotify account.
Playlist Miner is not just a quick and easy way to make an ad hoc playlist but also demonstrates how, with a little thought, calls to the Web API endpoint can be combined to create a remarkably effective application. As with Artist Explorer, the code for Playlist Miner is available from GitHub under an open source license.
Getting Started with the Web API
The Spotify Developer Website provides a lot of useful information about the Web API, including comprehensive user guides, tutorials, and reference manuals. If you are one of those people who like to begin at the top and work down, then start the Web API home page. If, on the other hand you like to dive straight into code, skip to our Code Examples page where you will find links to many code examples and wrappers for a variety of languages.
There are several interesting features at the website that will help you to develop your own programs. For example, there is an Application Showcase where you can find a gallery of programs that use the Web API, including both Artist Explorer and Playlist Miner. You can submit your own apps for inclusion.
In the Showcase, applications are classified by the APIs and SDKs they use. It’s a place to see what others are creating and to get inspiration. Many of the featured programs have open source licenses and you can find links to the source code in the descriptions. Looking through the source gives you a close up view of how to code for the Web API and, because many applications have open source licenses, you are free to copy the code and use it as the basis of your own endeavors. or to fork and contribute to an existing project.
Also at the site you will find a fully-featured Web API Console where you can interactively test all the Web API endpoints.
The console has full support for all parameters, field filters, and request body data that’s needed in each call, shows default values, and you can ask it to provide sample data if you just want to test a random call. The console fully supports OAuth tokens and the scopes that you need to specify when requesting user data and, after you have tested your call, you get to see the full JSON responses, with HTTP headers and status codes, along with the matching cURL syntax. You can bookmark any particular call.
We send a regular newsletter to our developer community, highlighting new additions and updates to the Web API. It’s worth signing up to if you would like to keep abreast of what’s new. You will find a sign-up form on the Developer Website home page.
Building Applications with the Web API
The Developer website also has full documentation for all the tools that Spotify makes freely available to independent developers. As well as the Web API, they include two very popular HTML widgets, the Play Button and the Follow Button, and our two SDKs: the Android SDK and the iOS SDK. The widgets are designed to help web developers and bloggers quickly add Spotify functionality to the site, while the SDKs make it possible for developers to create streaming applications for the popular mobile platforms. Let’s take a look at some ways these tools can be combined:
We haven’t mentioned the Spotify Echo Nest API yet. It’s another API that’s available from Spotify, with many, many endpoints that return a broad set of information about both artists and songs. It works well with the Web API, and indeed many of the applications in our Developer Showcase use both APIs together. Move spotify downloads to sd card.
Our Terms of Use
When you use our tools you need to pay close attention to some legally binding terms and conditions:
These documents are worth reading carefully if you are planning to create a program and make it available to others. We understand that these two documents can seem a little overwhelming but please understand that in many cases Spotify licenses its content from other rights holders and we are bound by the conditions in those licenses.
We have a flowchart at our developer website which provides an informal overview of the things we permit. The flowchart will help you understand, for example, under what conditions you can build a commercial application that you can sell, or sell advertising or sponsorship around.
Behind the scenes we are working hard to develop endpoints that open up even more Spotify content to the world and to ensuring that the API remains fast and capable of handling ever-increasing volumes of requests. So far the service has proven itself to be both stable and reliable: in-house we already use the Web API behind key features in several of our products, and many of our commercial partners are already using the Web API in their own development. Independent developers are also starting to discover the power of the API to enrich their applications with music and music metadata.
Tags: JSON, REST API, Spotify Accounts, Web API, web services
Spotify released recently a set of endpoints in beta to fetch information of what is playing and send playback commands. This allows for a wide range of integrations and I wanted to hack a bit with it.
What is Spotify Connect
Spotify Connect is a way to transmit the playback from one device to another one without having to use a physical connection like a cable or bluetooth. You can send the music from your Spotify desktop client to a speaker, from the Spotify app on mobile to Spotify for PlayStation, from the Spotify web player to Chromecast… In short, you have controllers and devices that can play music.
Spotify’s Web Player (zoomed in). Clicking on the icon next to the volume we get a list of connected devices (FireTV, desktop client, speakers and the web player).
Your application can become a controller through the Web API endpoints, getting information about what is playing currently and from where, being able to transmit the playback to another connected device or interact with the current context (pausing, changing the volume, skipping, playing something else…).
How to use the endpoints
Before using the Connect endpoints we need to obtain an access token on behalf of the user with certain permissions. There is more information about what scopes are needed in the documentation for each endpoint.
You don’t need to have a premium account to get the playback status, a free account is alright. You will do need a premium one if you want to send commands to change the playback.
A caveat at the moment is that the endpoints don’t support any kind of web socket connection nor long polling. Thus, if you want to get updates on the position of the current playing track or any other change in the context, you need to poll every few seconds.
A small library to make it easier to use the endpoints
The trickiest part of using the Spotify Web API is to implement the authorization flow. The Authorization Guide does a good job explaining it, but I thought I could do something so developers wouldn’t need to worry about setting up the whole flow, hiding away the authentication and just getting.
That’s why I have created spotify-player. It’s both a server and a library that you use to communicate with it. To use it, you just need to include a script, call login() and subscribe to the updates:
You can forget about setting up a Spotify application and a server, carrying out the token exchange, token refresh, and persisting the current user, so you can focus on the fun part.
Other methods include a function to make calls to other Spotify endpoints reusing the same access token, so you can fetch other data that can help you creating a more complete visualisation.
Let’s have a look at this pen as an example of a basic visualisation:
Java Spotify Api
And in case you can’t try it or don’t have a Spotify account this is pretty much what it looks like:
See the Pen on Codepen
I have kept the example very basic since the point is understanding the usage of the library. If you are into performance and UX you’ll see there is room for improvement, but as a front-end developer I know an example can get out of hand very easily when adding things.
Spotify Api Free Account Sign Up
I encourage you to fork it and start making your own visualisation. And once you do it, ping me so I include it in this Codepen collection.
Possible applications
Disclaimer: This is a list of some use cases. You still need to comply with Spotify’s terms of use when implementing an application that uses Spotify’sWeb API. This might mean adding certain messaging and link to the song in Spotify.
Dynamic visualisations
You could combine the playback position with the audio analysis of the track to generate dynamic visualisations using loudness, tempo, key, timbre or pitch of the segments that compose the track. You can also use the endpoint to fetch audio features of a track, which gives you high level information about characteristics of the song.
See the Pen on Codepen and Possan’s original visualisation on GitHub
Now playing view
Are you a coffee-shop owner and people always wonder what song is playing? You could have a TV showing a branded now playing view. You could even have a widget on your website, or a script posting to a social network what is currently playing so your customers know. Or a small browser extension showing what is playing and/or showing desktop notifications when the track changes.
See the Pen on Codepen. When the track changes the browser shows a Web Notification.
Or if you are at home hosting a dinner or party, show on the TV or computer what is playing.
Spotify Api Free Account Sign In
You can combine other Spotify Web API endpoints too. Eg you could fetch the artists info to show the artist profile image in the background:
Spotify Api Data
See the Pen on Codepen. A simple visualisation of what’s playing in Spotify rendering the artist profile image as the background.
You could use an API like Musixmatch’s and create an app or a website showing the lyrics for the current song, synchronised with the playback position.
And your imagination is the limit. Use Genius’ API to get annotations about a song, or search for trivia and more info about the song or artist using Wikipedia’s API. And if you don’t want to miss what’s happening in the world, implement a news ticker in your view using News API.
See the Pen on Codepen
MVPSpotify Api Key
The library is really small and it only supports reading the playback state and not send commands. Let’s call it an MVP. I might work on adding more features in the future.
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