Authdog

Keycloak

Last updated Aug 15, 2026
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Keycloak signs users in against a realm on a Keycloak server you or your customer runs. It is the self-hosted option in the catalog: the directory stays on your infrastructure while Authdog fronts the application.

Copy the redirect URI

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

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

Create the realm client

  1. Open the Keycloak admin console and select the realm.
  2. Under Clients, create a client with Client authentication on — a confidential client.
  3. Enable the Standard flow (authorization code).
  4. Under Valid redirect URIs, add the redirect URI from Authdog.
  5. Save, then copy the Client ID and the secret from the Credentials tab.
  6. Note the realm base URL — that is the Domain URI.

Configure Authdog

Field Value
Client ID The client identifier from the provider
Client Secret The client secret from the provider
Domain URI The realm base URL, e.g. https://keycloak.example.com/realms/acme

Save, then toggle the connection active.

What Keycloak returns

Authdog requests the openid email profile scopes and reads the profile from the ID token the provider issues.

Claims come from the ID token the realm issues: sub, preferred username, email and its verified flag, and any protocol mappers you configured.

Use the realm base URL as the Domain URI — https://host/realms/<realm> — not the admin console URL and not the full authorize endpoint.

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 Keycloak button and complete the flow.
  3. Confirm the user appears under Users in the console with a Keycloak identity linked.

Troubleshooting

Symptom Cause
invalid_client The client is public rather than confidential, so it has no secret
Invalid parameter: redirect_uri The URI is missing from the client's valid redirect URIs
404 on authorize The Domain URI is not the realm base
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
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