demo · v136
IdP List Composer
Build the navigator.credentials.get({ identity: { providers: [...] } }) call interactively. Add up to five IdPs, set per-provider context, pick mediation mode — the inspector flags the v136 rules: at most one IdP can request add-accounts mode, and passive-mode add requests are now rejected.
Note: FedCM ships in Chrome but specific multi-IdP support depends on each provider's well-known endpoint being reachable. The composer below produces the call payload regardless — Test call runs the real API if you've configured providers.