Authdog
Console

Apple

Last updated Sep 30, 2026
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Sign in with Apple uses a Services ID and a signing key. Authdog mints the short-lived client-secret JWT on every token exchange, so you paste the .p8 once and do not rotate a static secret. If your iOS app offers any other social login, App Store review expects this connector alongside it.

Before you start

You need a paid Apple Developer Program membership. The free account cannot create the Services ID or the key.

In the Authdog console, select the project and environment, open Authentication > Providers, find Apple, and click Enable. Copy the redirect URI:

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

Create the App ID and Services ID

  1. Open Certificates, Identifiers & Profiles.
  2. Create an App ID and enable Sign In with Apple.
  3. Create a Services ID. Note the identifier (for example com.example.app.web). It becomes the client ID.
  4. Reopen the Services ID, enable Sign In with Apple, and Configure it.
  5. Set Primary App ID to the App ID you just created.
  6. Under Domains and Subdomains, add identity.authdog.com, or your custom domain host.
  7. Under Return URLs, paste the redirect URI from Authdog.
  8. Save.

Create the sign-in key

  1. Open Keys and select +.
  2. Name the key, enable Sign In with Apple, and configure it against the primary App ID.
  3. Register, then download the .p8 file. Apple lets you download it once.
  4. Note the Key ID. Your Team ID is in the top-right of the developer portal.

Configure Authdog

Field Value
Team ID The 10-character team identifier
Service ID The Services ID identifier
Key ID The 10-character key identifier
Private Key The full .p8 file, including the BEGIN PRIVATE KEY and END PRIVATE KEY lines

Save, then toggle the connection active. Store the .p8 in Vault. Apple will not issue a second copy.

Apple sends the user's name only on the first authorization, and only if they agree to share it. Hide My Email yields a stable privaterelay.appleid.com address. Persist the name the first time you see it.

Test it

  1. Open hosted sign-in, or https://identity.authdog.com/api/v1/signin/<connectionId>.
  2. Select Continue with Apple.
  3. Confirm the user appears under Users with an Apple identity.
  4. Sign out and back in. You should land on the same user.

Troubleshooting

Symptom Cause
invalid_client Team ID, Key ID, or Services ID mismatch, or the key is not enabled for Sign In with Apple
invalid_grant The .p8 contents are truncated. Repaste the whole file
Apple redirect error The Return URL does not match Authdog's redirect URI exactly
Domain verification prompt The domain under Domains and Subdomains is missing or misspelled
Read To learn how to
Apple connector The same setup in the connector catalog
Marketplace The listing for this integration
Custom domains Serve the callback from your own HTTPS host