Authdog

PayPal Sandbox

Last updated Aug 15, 2026
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The PayPal Sandbox connector is the PayPal connector pointed at api.sandbox.paypal.com, for testing with the sandbox buyer accounts in your developer dashboard.

Copy the redirect URI

In the Authdog console, select the project and environment, open Authentication > Providers, find PayPal Sandbox, and click Enable. Copy the redirect URI shown in the form:

https://identity.authdog.com/api/v1/callback/<connectionId>

Create the application

  1. Create the app under Sandbox in the PayPal Developer Dashboard.
  2. Enable Log in with PayPal and add the redirect URI from Authdog as a Return URL.
  3. Create sandbox personal accounts under Testing Tools > Sandbox Accounts.
  4. Copy the sandbox app's Client ID and Secret.

Configure Authdog

Field Value
Client ID The client identifier from the provider
Client Secret The client secret from the provider

Save, then toggle the connection active.

What PayPal Sandbox returns

Authdog requests the openid profile address scopes and reads the profile from https://api.sandbox.paypal.com/v1/identity/oauth2/userinfo.

Sandbox responses mirror live ones. Sandbox buyer accounts have their own credentials — real PayPal logins will not work here.

Configure this connector in a development environment and the live connector in production so a test credential can never issue a production session.

Test it

  1. Open your environment's hosted sign-in page, or link to https://identity.authdog.com/api/v1/signin/<connectionId>.
  2. Select the PayPal Sandbox button and complete the flow.
  3. Confirm the user appears under Users in the console with a PayPal Sandbox identity linked.

Troubleshooting

Symptom Cause
invalid_client Live credentials used against the sandbox endpoint, or the reverse
Redirect or callback URL error The URI registered with the provider does not match Authdog's exactly
Works in one environment only Each environment has its own connectionId, and so its own redirect URI to register
Read To learn how to
Connectors Set up any other social provider
PayPal Set up the live connector

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