ZBD Login follows the RFC 6749 standards in order to provide the best and safest experience to users. ZBD’s OAuth2 implementation requires PKCE (Proof Key for Code Exchange) as an additional feature for making sure the entire authentication flow is secure.

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OAuth2 API

The authorization sequence begins when your app redirects a browser to a ZBD URL. The URL includes query parameters that indicate the type of access being requested. ZBD handles authentication, session selection and user consent. The result is an authorization code, which the application can exchange for an access token and a refresh token.

The app must store the refresh token for future use and use the access token to fetch user data through the ZBD API. When the access token expires, the app will use the refresh token to request a new one.

ZBD Login - OAuth2 flow


In order to properly redirect users to the ZBD login portal, you must open a browser session containing the built authorization URL as the destination address.

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Authorization URL

  • Authorization: GET https://api.zebedee.io/v1/oauth2/authorize
    • In case you are building this URL yourself, without the use of libraries that support PKCE, the following properties are needed, as query params:
      • client_id = <your clientId>
      • response_type = code
      • redirect_uri = <your_url_callback>
      • code_challenge_method = S256
      • code_challenge = <code challenge generated from PKCE section>

After accessing the ZBD login portal URL and successfully authenticating, the user will be redirected back to your application with state and code query parameters included. These two properties allow you to hit the token endpoint, and get the user’s accessToken.

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Getting the Token

  • Token: POST https://api.zebedee.io/v1/oauth2/token
    • Once you have the code returned from the previous authorization endpoint, you must now make a POST request to the token endpoint, with the following properties:
{
  "client_id": "{{client_id}}",
  "client_secret": "{{client_secret}}",
  "code": "{{code}}",
  "code_verifier": "{{code_verifier}}",
  "grant_type": "authorization_code",
  "redirect_uri": "{{your_url_callback}}"
}
  • And, as response, you should receive the user’s accessToken:
{
  "accessToken": "{{userAccessToken}}"
}

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Getting ZBD User Profile Data

  • Profile: GET https://api.zebedee.io/v1/oauth2/user
    • You can now call the ZBD API endpoints passing the provided accessToken from the previous endpoint on the request authorization header.
Response: {
"data": {
  "email": "testzebedee2@gmail.com",
  "gamertag": "testzebedee",
  "id": "6109484f-08e6-479a-a044-be930d89b42a",
  "image": "https://lh3.googleusercontent.com/a/AATXAJwNvpB49NrxF41KVrEFX9k1v93WoMAMBb4wBF7Q=s96-c",
  "isVerified": true,
  "lightningAddress": "testzebedee@zbd.gg",
  "publicBio": "Welcome to my zbd.gg page!",
  "publicStaticCharge": "lnurl1dp68gurn8ghj7ar9wd6zu7n9vfjkget99e5k7tmkxqhhyet3w4jhxapdwd6xzarfvvkkx6rpwfnk2ue0x56nxvrpxuervtfkxa3rgtf5xu6k2ttzxy6nstt9xsurgvejx5exydpjvc9v9tk7",
  "social": {
    "twitter": "gamertag",
    "website": "https://example.com",
  },
},
"success": true,
}

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Getting ZBD User Wallet Data

Response: {
"data": {
  "balance": "98251000",
  "remainingAmountLimits": {
    "daily": "1000000000",
    "maxCredit": "4901749000",
    "monthly": "25000000000",
    "weekly": "5000000000",
  },
},
"message": "Successfully fetched user wallet.",
"success": true,
}

It is common for software libraries and prebuilt packages to handle a lot of this heavy-lifting for you, except for the Getting the Token part, which is a true secret and should be handled in your secure backend system services.

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Integration

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Get Credentials from ZBD Dev Dashboard

In order to be able to implement ZBD Login functionality, you must first get your application/game’s OAuth2 Client ID and Client Secret, and set up proper redirect URLs.

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Getting Keys

After creating a game inside of the ZBD Dev Dashboard, head on over to the OAuth2 tab inside of that game’s single details view.

OAuth2 Menu - ZBD Dev Dashboard


You can now get your Client ID (first field) and Client Secret (second field).

Keep your secrets secure and safe. Don’t share secrets with others. Don’t commit secrets into your code.

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Setting Redirect URLs

Now its time to set up your OAuth2 redirect URLs. Head on over to the OAuth2 settings modal through the View Settings button.

It is a requirement that the same redirect URL be used in the first step of the OAuth2 flow (authorization endpoint) - if you set a redirect URL different from the one being used when building the authorization URL, or if you don’t set a redirect URL at all, the Authorization redirect will not work.

View OAuth2 Settings - ZBD Dev Dashboard


From the opened OAuth2 Settings modal, you can add up to 3 redirect URLs (whether native mobile URIs or HTTPS-based URLs). To get started use the + button.

Add Redirect URLs - ZBD Dev Dashboard


Once you’ve added your redirect URLs / app schemas, you can save by clicking Update. You’re now all set up for using ZBD Login on your application. For more detailed examples check out the OAuth2 Code Walkthrough for source code and LOC explanation.

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