Users & Firebase Auth
Firebase Authentication in Fuego
Fuego provides an intuitive interface for managing Firebase Authentication users. With support for multi-tenancy (when Identity Platform is enabled), it allows seamless administration of authentication across different projects.
Features
- User Management: View, edit, and delete Firebase Authentication users.
- Multi-Tenancy Support: Manage users across different tenants when Identity Platform is enabled.
- Filtering & Searching: Locate users quickly using multiple search conditions.
- User Details Editing: Modify user attributes, including email, display name, and authentication provider.
- Custom Claims Management: Assign and manage user roles using custom claims.
- Multi-Factor Authentication: View MFA information and manage phone-based second factors.
Managing Users
Viewing Users
The main Users (Firebase Auth) panel displays a list of registered users. Key details include:
- UID (Unique Identifier)
- Identity (Display Name & Email)
- Provider (Google, Facebook, Email, etc.)
- Creation & Last Access Dates
- Email Verification Status
- Custom Claims

Use the search box in the toolbar (or press ⌘ ⇧ F / Ctrl ⇧ F) to look users up by:
- Auto (the default): type a user ID, an email address or an E.164 phone number in a single field, and Fuego works out which lookup to run
- User ID
- Email address
- Phone number (E.164 format, e.g.
+14155552671) - Provider and the user’s ID at that provider (Google, Facebook, Apple, …)
Conditions are combined with OR: add one row per value to fetch several
users in a single search. The box summarizes the active conditions and its ×
button removes them.

Tabs, count and last sign-in
The user list works like the Firestore explorer:
- Multiple tabs — open one tab per filter, or one per tenant, and switch between them without losing your place.
- User count — the list header shows how many users match the current filter.
- Last sign-in — available as a column, next to the creation date, so inactive accounts are easy to spot.
Editing User Details
Click on a user to open the User Details panel, where you can:
- Update their display name and email
- Enable or disable the account
- Verify or unverify their email
- Manage authentication providers
- Modify custom claims (e.g., admin roles, permissions)

Adding New Users
Click + Add to manually register a new user by providing an email and password.
Multi-Factor Authentication (MFA)
Fuego displays the Multi-Factor Authentication information associated with each user, allowing you to review the enrolled second factors directly from the User Details panel.
You can also add new phone-based second factors or modify existing ones, as long as all the user’s enrolled factors are of type phone. If the user has any non-phone factor enrolled (for example, TOTP), the MFA data becomes read-only and cannot be modified from Fuego.
Multi-Tenancy Support
If Identity Platform is enabled, Fuego allows you to manage users across multiple tenants. Use the tenant selector to switch between different authentication environments.
Conclusion
Fuego simplifies Firebase Authentication management, providing powerful tools for user administration, custom claims, and multi-tenancy. Whether you’re managing a single project or multiple tenants, Fuego offers a streamlined and efficient workflow.
Related resources
