Integration Steps

Its easy to get started with the Smile API! Implementing the Smile API involves simple client and server-side integration, which are outlined below in four key steps:

  1. Link token: Your application server sends a request to our REST API to generate a short-lived "Link" token.

  2. Wink Widget: Using the Link token, your application client initializes the Client SDK to launch the Smile Wink Widget. Your end-users interact with this widget to submit their login credentials to authenticate with their employment data provider over a secure and encrypted connection.

  3. Connecting to Source Data: Once in the widget, a user can then either connect their employment account or upload a photo or scanned copy of their employment data. This will be used as the source for any user data your application will be requesting.

  4. Requests: Our servers execute your application's requests. We read, transform, and temporarily store data from the user's employment data provider so that it can be sent to the client application.


Using the Developer Portal

To get started, simply register to the Developer Portal. After registering, you will be asked to verify your email and then you can log in.

By default, when you register and log in, you will be in "Sandbox" mode. You can access "Production" mode by booking a call or emailing [email protected], and submitting the necessary information to go live.



To learn more about the different modes, check out the next section on "Understanding the API"

Inside the Developer Portal, you will see the following:

  1. Wink Widget: Use this to preview how the Wink Widget works. The behavior of the widget changes depending on the mode you are in. In Sandbox mode, you can use the provided test accounts on the page to simulate the process of logging into different data providers such as a gig platform or payroll system. In Production mode, you will be able to actually link a live account or upload an actual file.

  2. Users: View the users created in the back-end, as well as the data captured from that user, during the account linking process or after uploading the user uploads a file. In this section, you can also preview how the returned data from Smile looks like for each resource such as Employments and Incomes.

  3. Data Source: The Data Source section is where you can find all the Data providers as well as File Types that can be uploaded. Data providers include different types such as the names of different employers, gig platforms, government services, or HR and payroll systems. File types on the other hand are those that can be uploaded by the user such as copies of payslips, tax documents and others.

  4. API Keys: After registration, you will be given a Sandbox API key and an API secret. The API secret must be kept safe and used only in exchanges between your application's server and Smile API's server. Upon request, you can also be given the API key and API secret to use the Smile API in production. This will also allow you to switch the Developer Portal to "Production Mode" for live testing.

  5. Organizations: This is where you can enter details about your organization.

  6. Team: This is where you can invite additional members from your organization to join the Portal and share a common tenant or workspace.

  7. Documentation: This is a link to the API documentation which you are reading now!

Using this Reference

To fully explore the Smile API, we encourage you to make full use of this Reference website by entering your API Key and Secret on the right hand side of the reference pages.



Your API Key and Secret can be found by logging into the Developer Portal under the API Keys section. Upon signup, you will have instant and free access to test on our Sandbox environment. If you need Production environment access, contact us.

You may click on the Copy icon next to your API Key and Secret to easily copy it to your computer clipboard.



To actually test the Smile API in your own environment, we have provided example code to instantiate the Wink Widget or SDK.



We provide Quickstart sample code in Github which you can download and modify according to your own requirements.

The example code installs a small server running on Node.js that automatically retrieves a token from our API, so you can instantiate the Wink widget in your own local machine.

The example implementation is composed of two parts:

  • Under /frontend, you will find example code in HTML that already has the Wink Javascript SDK embedded.
  • Under /node, you will find server-side Javascript code that will retrieve the token. You will need to download and run Node.js to run the code.

Implementation Steps

Below steps are also included in the document found in the the Quickstart repository.

  1. Download the Quickstart files onto your machine.



    If you have git, you can clone the repository or run the following command:

    git clone
  2. Go to the /node directory of your Quickstart download.

  3. Create a new file called .env in this directory with the following contents:

    # The port you want the example server to listen to
    # Smile Link API keys (you can get this by requesting access from [email protected])
    # API Host (whether this will run in Sandbox or Production)

    You can use the .env.example file, included in the Quickstart repository, as a reference.



    The .env file is normally hidden by your system. You may want to enable display of hidden files in your system preferences to be able to see it.

    Additionally, on Windows machines, Windows will not allow you to create a .env file directly from Windows Explorer since it will not allow file names starting with a .. To get around this, you can do the following steps:

    1. Open Notepad and write the contents of the file (see below).
    2. Go to FILE -> SAVE AS window in Notepad.
    3. Select the "All files" type in the selection window.
    4. Save the file as .env

    You may need to ensure that you have proper permissions in your machine to create the file.



    In Mac or Linux machines, you can open up Terminal and enter the following commands as a Super User:

    sudo touch .env
  4. Save and close your file.

  5. If you don't have Node.js installed in your machine, install Node.js.



    For Mac, you can open up the Terminal and run:

    curl "${VERSION:-$(wget -qO- | sed -nE 's|.*>node-(.*)\.pkg</a>.*|\1|p')}.pkg" > "$HOME/Downloads/node-latest.pkg" && sudo installer -store -pkg "$HOME/Downloads/node-latest.pkg" -target "/"

    For Windows, you can download the installer.

    For other operating systems, you can find the instructions from the Node.js website.

  6. Run Yarn with npm package manager which is included with Node.js and enter the following commands:

    npm install --global yarn
    yarn install



    In Mac or Linux, you will need to open up the Terminal. If you are using Windows, you can go to the command line. Make sure you are still in the /node directory of the Quickstart files you just downloaded onto your machine.

    You may need to run as a Super User if you don't have enough permissions. On a Mac or Linux machine, you can run the commands as a superuser by using sudo. On Windows, you can run the command with an administrator trust-level, or by right-clicking the program in the UI and choosing "run as administrator."

  7. Run the server:

    node index.js



    You may need to install dotenv in your environment if you run into issues running the Node server. To install dotenv, simply run the following:

    npm install dotenv
  8. Open up the your browser and open up the example Wink Widget. For example, if you specified port :8000 in your .env configuration file, open up in your web browser.

  9. Test the Widget using the Sandbox accounts provided.


Good job!

Sit back, relax, and pat yourself on the back for a job well done!