GitHub user TongyiDai deleted a comment on the discussion: Can the Host 
Application’s SSO Access Token Be Used for Superset Embedded Guest Token 
Generation?

The ZITADEL access token cannot be passed directly to Superset's 
`/api/v1/security/csrf_token/` or `/guest_token/` endpoints unless you have 
implemented an authentication manager that accepts that token as a Superset API 
credential. Sharing an upstream IdP does not make tokens issued for the Angular 
application's client/audience valid for Superset's REST API.

The Embedded SDK's intended trust boundary is backend-to-backend:

1. Angular authenticates the user with ZITADEL.
2. Your backend validates that ZITADEL token and applies your authorization 
policy.
3. Your backend obtains or creates a short-lived Superset guest token 
containing only the allowed dashboard resource and any RLS rules.
4. The frontend's `fetchGuestToken` callback receives that guest token; no 
Superset service credentials or signing secret reach the browser.

For issuing the token, Superset documents two choices:

- call `POST /api/v1/security/guest_token/` as a Superset principal with 
`can_grant_guest_token`; or
- mint the guest JWT directly in your trusted backend using 
`GUEST_TOKEN_JWT_SECRET`, the configured algorithm, and matching audience.

The second avoids logging in a service account for every request, but it does 
not remove the backend trust boundary—it replaces the service credential with a 
highly sensitive signing secret. CSRF is not part of that direct-JWT path.

Do not send the ZITADEL token or Superset signing secret to the Embedded SDK. 
Use the ZITADEL identity only as authenticated input to your backend's 
dashboard/RLS decision, then issue a narrowly scoped, short-lived guest token.

GitHub link: 
https://github.com/apache/superset/discussions/44205#discussioncomment-18459919

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