users

The default auth provider + user-management module: email/password login, OAuth/OIDC sign-in, sessions, registration, invites, password reset, email verification, role assignment, admin UI, and mailer backends. It registers a UsersAuthProvider on app.state.auth.auth_provider, which the auth module's AuthMiddleware delegates to for request.state.user. (It's one of two bundled auth providers — keycloak is the alternative; install exactly one.)

ModuleMeta

Field	Value
name	Users
route_prefix	/api/users
view_prefix	/users (sign-in, self-service)
admin_view_prefix	/admin/users (management CRUD)
depends_on	["Auth"]

Auth flow

The module is built on fastapi-users for password hashing, registration, password reset, and verification. On top of that it layers:

• A signed session cookie (sm_auth by default) — the auth module's AuthMiddleware calls UsersAuthProvider.resolve_user, which reads it on every request and populates request.state.user. Bearer tokens (Authorization: Bearer <token>) resolve against users_access_token.
• OAuth / OIDC sign-in (Google, GitHub, Microsoft/Entra ID, and any generic OIDC provider) — see OAuth providers.
• An invite flow — admins generate an invite link; the recipient sets their password via POST /api/users/auth/accept-invite.
• Login lockout — see Login lockout. Shared across workers, source IPs and restarts.
• ThroughputLimiter — per-IP rate limit across register / forgot-password / accept-invite / verify-token endpoints.

Auth endpoints

Method + path	Body	Notes
POST /api/users/auth/login	OAuth2PasswordRequestForm	sets sm_auth cookie + session["user_id"]; 400 LOGIN_BAD_CREDENTIALS; 429 + Retry-After while locked — see Login lockout
POST /api/users/auth/logout	—	clears the sm_auth cookie and the session
POST /api/users/auth/register	UserCreate	gated by users.allow_signup; rate-limited
POST /api/users/auth/forgot-password	PasswordReset	rate-limited
POST /api/users/auth/reset-password	{token, password}
POST /api/users/auth/request-verify-token	RequestVerifyToken	rate-limited
POST /api/users/auth/verify	VerifyRequest
POST /api/users/auth/accept-invite	AcceptInviteRequest	sets password + signs the user in
POST /api/users/auth/demo/{role}	—	one-click sign-in as a shared demo account (role ∈ admin, user); 404 unless that account is configured; rate-limited per role — see Demo mode
POST /api/users/auth/token	TokenRequest (email + password)	bearer login for mobile / API clients → {access_token, refresh_token, token_type, expires_in}; 401 for bad credentials and external/SSO users; 429 + Retry-After while locked — see Login lockout
POST /api/users/auth/token/refresh	RefreshRequest (refresh_token)	rotates a refresh token into a new pair (old one revoked)
DELETE /api/users/auth/token	RefreshRequest (refresh_token)	revokes a refresh token (idempotent)
GET /api/users/auth/{provider}/login	—	OAuth: redirect to the IdP (provider ∈ configured set)
GET /api/users/auth/{provider}/callback	?code=&state=	OAuth: find-or-create user, set cookie, 303 to login_redirect_url

Self-service endpoints

Method + path	Body / response	Permission
GET /api/users/me	→ UserRead	active user
PATCH /api/users/me	SelfProfileUpdate → UserRead	active user

Admin endpoints (users.manage)

Method + path	Body / response
GET /api/users/admin	?q=&status=&role=&verified=&sort=&order=&page=&per_page= → list[UserListItem]
POST /api/users/admin	UserAdminCreate → UserListItem (201) — active+verified user with an admin-set password
POST /api/users/admin/invite	UserInvite → UserListItem (201)
PATCH /api/users/admin/{user_id}	UserDetailsUpdate → UserListItem — edit email + full name
DELETE /api/users/admin/{user_id}	→ 204 (hard delete; an admin cannot delete their own account → 400)
PATCH /api/users/admin/{user_id}/disable	→ UserListItem
PATCH /api/users/admin/{user_id}/enable	→ UserListItem
PATCH /api/users/admin/{user_id}/unlock	→ UserListItem — lifts a login lockout and clears the failure count (audited)
PUT /api/users/admin/{user_id}/roles	RoleAssignment → UserListItem
PATCH /api/users/admin/{user_id}/verify	→ UserListItem (mark verified; idempotent)
POST /api/users/admin/{user_id}/reset-password-link	→ PasswordResetLink (409 for external/SSO users)

POST /api/users/admin creates an active + verified user directly — no invite email, no verification flow; the admin sets the password. It returns 409 if the email is already taken and 400 for an invalid password. The matching admin UI (Create form, Edit details card, and a delete "danger zone") lives under /admin/users/ — see View routes and Inertia pages.

View routes

Public:

• GET /users/login → Users/Login (shows dev-account buttons in dev)
• POST /users/logout → 303 redirect, clears cookie
• GET /users/register → Users/Register (404 if signup disabled)
• GET /users/forgot-password → Users/ForgotPassword
• GET /users/reset-password → Users/ResetPassword
• GET /users/verify → Users/VerifyEmail
• GET /users/invite/accept → Users/AcceptInvite

Authenticated:

• GET /users/me → Users/Profile
• PATCH /users/me → form action (redirects)

Admin (users.manage) — served from the module's admin_view_prefix, /admin/users:

• GET /admin/users/ → Users/Users/Index
• GET /admin/users/add → Users/Users/AddPeople — one form for both flows; ?mode=create|invite picks which
• GET /admin/users/{user_id} → Users/Users/Edit

The separate Create and Invite pages merged into AddPeople. Their old paths survive as 307 redirects carrying the mode: GET /admin/users/invite → /admin/users/add?mode=invite, and GET /admin/users/create → /admin/users/add?mode=create.

These pages moved out of /users/admin when the admin screens were gathered under /admin — the pre-move URLs still 301 for now, but link to the new ones. The /api/users/admin/* endpoints below are a separate contract and did not move.

Public contracts

from users.contracts.schemas import (
    UserRead,
    UserCreate,
    UserUpdate,
    UserInvite,
    UserAdminCreate,
    UserDetailsUpdate,
    UserListItem,
    RoleListItem,
    RoleAssignment,
    AcceptInviteRequest,
    PasswordResetLink,
    SelfProfileUpdate,
)
from users.contracts.events import (
    UserRegistered,
    UserInvited,
    UserCreated,
    UserDeleted,
    UserDisabled,
    RoleAssigned,
)

Class	Purpose
UserRead	id, email, is_active, is_superuser, is_verified, is_external, full_name, tenant_id, disabled_at, last_login_at.
UserAdminCreate	Admin create-user input: email, password, full_name, role_names.
UserDetailsUpdate	Admin edit input: email, full_name.
UserListItem	Admin list row; adds is_external, created_at, roles.
RoleListItem	id, name, description, user_count.
UserRegistered, UserInvited, UserCreated, UserDeleted, UserDisabled, RoleAssigned	Events — see Events.

Other modules read accounts through the user directory, which this module installs as users.directory.UsersDirectory in register_settings; they should not import users.models. The one table read directly is Role, re-exported as users.contracts.roles.Role for the permissions role pages. The edit page's Recent activity card reads the core activity feed rather than importing audit_log.

Models

User (table users_user)

Column	Type	Notes
id	UUID	PK
email	str	unique, indexed; functional index on lower(email)
hashed_password	str | None	nullable — external (SSO) users have no local password (see External / SSO users)
is_active / is_superuser / is_verified	bool
is_external	bool	True for users provisioned via an external IdP; default False (server_default false)
full_name	str | None
tenant_id	str | None	indexed; only set when multi-tenant
disabled_at	datetime | None
last_login_at	datetime | None	indexed
failed_login_count	int	failed password logins in the current window; server_default 0; not audited
last_failed_login_at	datetime | None	when the window's last failure happened; not audited
locked_until	datetime | None	set while a login lockout holds; audited
roles	relationship → Role via UserRole	eagerly loaded by AuthMiddleware

Role (table users_role) — id, name (unique, indexed), description.

UserRole (table users_user_role) — composite-PK join table with assigned_at, assigned_by. The (user_id, role_id) PK is user-id-first; a separate index covers reverse lookups by role_id.

UserAccessToken (table users_access_token) — bearer API tokens; resolved by UsersAuthProvider on Authorization: Bearer requests (sessions remain the primary browser auth).

OAuthAccount (table users_oauth_account) — linked OAuth/OIDC accounts: oauth_name, account_id, account_email, access_token, refresh_token, expires_at.

RefreshToken (table users_refresh_token) — opaque refresh tokens for the bearer flow: token (PK), user_id, created_at, expires_at, revoked_at.

Two pre-seeded roles get fixed UUIDs so other modules can reference them safely:

Role	UUID	Default permissions
admin	00000000-0000-0000-0000-000000000001	implicitly all (admin bypass in RequiresPermission)
user	00000000-0000-0000-0000-000000000002	users.self.profile, file_storage.{upload,download,delete}

Settings

DB-backed via register_module_settings. Two values are read only from the env at module import time because they bootstrap token signing before the DB is reachable:

Env var	Default	Purpose
SM_USERS_RESET_PASSWORD_TOKEN_SECRET	dev-reset-token-secret-change-me	password-reset token signing
SM_USERS_VERIFICATION_TOKEN_SECRET	dev-verify-token-secret-change-me	email-verify token signing

Both must be replaced with non-placeholder values in production — the boot-time check refuses to start otherwise.

Everything else is DB-backed (initial values are pydantic defaults; edit under Users at /admin/settings/):

Field	Default
allow_signup	False
require_verification	True
login_redirect_url	"/dashboard/" (if the Dashboard module isn't installed, auto-falls back to the first other module that exposes view routes, or / only as a last resort)
reset_password_token_lifetime_seconds	3600
verification_token_lifetime_seconds	604_800 (7 days)
bearer_token_lifetime_seconds	900 (15 min)
refresh_token_lifetime_seconds	2_592_000 (30 days)
cookie_name	"sm_auth"
cookie_max_age_seconds	1_209_600 (14 days)
cookie_secure	True (flipped to False in dev at startup)
cookie_samesite	"lax"
base_url	"http://localhost:8000"
login_rate_limit_failures	5 — failures from one IP for one username before that source is throttled for the window
login_rate_limit_window_seconds	300 — the window for both lockout tiers
login_rate_limit_cooldown_seconds	900 — how long an account lock lasts
login_lockout_account_failures	10 (≥ 1) — failures for one account, from anywhere, before it locks
auth_rate_limit_attempts	10
auth_rate_limit_window_seconds	300
bootstrap_email, bootstrap_password, bootstrap_user_email, bootstrap_user_password	"" — see Bootstrap
demo_mode	False — see Demo mode
demo_admin_email	"demo-admin@example.com" — blank to stop offering the admin demo
demo_user_email	"demo-user@example.com" — blank to stop offering the standard-user demo
demo_admin_password / demo_user_password	"" (a random one is generated, so the account is reachable only through its button)
demo_read_only	True
oauth_google_client_id / oauth_google_client_secret	"" — Google OAuth
oauth_github_client_id / oauth_github_client_secret	"" — GitHub OAuth
oauth_microsoft_client_id / oauth_microsoft_client_secret / oauth_microsoft_tenant	"" / "" / "common" — Microsoft (Entra ID)
oauth_oidc_client_id / oauth_oidc_client_secret / oauth_oidc_discovery_url / oauth_oidc_display_name	"" / "" / "" / "OIDC" — generic OIDC

Permissions

Code	Purpose
users.manage	admin: list / invite / disable / role-assign
users.self.profile	edit own profile (granted to user role)

users.manage also unlocks account names in the audit log's entity column: the module registers its audit link with label_permission="users.manage", so a reader holding only audit_log.view sees the id of an edited account rather than its display name or email. See audit_log § Entity and actor names.

Menu

Label	URL	Icon	Section	Group	Order	Roles
Users	/admin/users/	users	ADMIN_SIDEBAR	Access	100	["admin"]
Profile	/users/me	user	USER_DROPDOWN	—	990	logged-in
Logout	/users/logout (POST)	log-out	USER_DROPDOWN	—	999	logged-in

Events

Event	Fields	Fired
UserRegistered	user_id, email	on signup
UserInvited	user_id, email, invited_by	on admin invite
UserCreated	user_id, email, created_by	on admin create (POST /api/users/admin)
UserDeleted	user_id	on admin delete
UserDisabled	user_id	on admin disable
RoleAssigned	user_id, role_name	once per role on PUT /admin/{user_id}/roles

CLI

• smpy users create-admin --email <e> --password <p> [--full-name <name>] [--force] — creates (or, with --force, updates) an admin user. Idempotent: re-running with the same email is a no-op without --force.

uv run smpy users create-admin --email admin@example.com --password changeme

Programmatically:

from users.bootstrap import create_admin

result = await create_admin(db, email="admin@example.com", password="...")
# result.user, result.created -> bool

Bootstrap (the first admin)

Two paths to seed the first admin:

1. CLI — smpy users create-admin ....
2. Env vars — set SM_USERS_BOOTSTRAP_EMAIL + SM_USERS_BOOTSTRAP_PASSWORD before first make dev. bootstrap_admin_from_env(app) runs at startup and creates the admin if the users_user table is empty. Optionally seed a non-admin too via SM_USERS_BOOTSTRAP_USER_EMAIL + SM_USERS_BOOTSTRAP_USER_PASSWORD.

Demo mode (hosting a showcase instance)

Turn demo_mode on and the sign-in card grows a button per demo account. One click signs the visitor straight in — no email, no password, no signup.

users.demo_mode         = true
users.demo_admin_email  = demo-admin@example.com
users.demo_user_email   = demo-user@example.com
users.demo_read_only    = true       # default; leave it on

Set these under Users at /admin/settings/, or seed them in the settings store before first boot. Changes apply live — the SettingsReloaded handler re-seeds the accounts and refreshes the cached ids, so there is no restart.

Two accounts, not one

An administrator and an ordinary standard user, because the two halves of the app look nothing alike. The admin surface — users, roles, settings, modules, audit history — is what the framework is for, and a visitor who only ever sees the end-user app never meets it. One who only ever sees /admin/* never meets the app you actually build for people. Offering both, and letting someone switch between them without signing out, is what makes a showcase instance answer "what is this?" in one visit.

Each is independently switchable: blank an email and that button disappears and its route starts answering 404 — the offer and the endpoint come from the same resolution, so hiding a button never leaves a live way in behind it. Blank both and demo_mode has nothing to turn on (logged, since you plainly meant something by switching it on).

What it does

• Seeds the accounts on every boot and every settings reload (users.demo.ensure_demo_users). Idempotent, and it reconciles: the admin row carries is_superuser and the admin role, the user row carries neither, and repointing an email from one to the other demotes the row rather than leaving the old grant in place. One account failing to seed does not withdraw the other.
• Never sends a password to the browser. Each button posts to POST /api/users/auth/demo/{role} with an empty body and the server resolves the account itself. This is the difference between demo mode and the dev quick-login buttons, which paste real credentials into the form and are therefore development-only. Leave a demo_*_password blank and that account is seeded with a random secret nobody — including you — can type; set one only if you also intend to publish the credentials (for an API demo, say).
• Refuses writes while demo_read_only is on. DemoReadOnlyMiddleware rejects every unsafe HTTP method from either demo session with 403 {"detail": "DEMO_READ_ONLY"}, except signing out and the demo sign-in routes themselves — switching between the two accounts is the point of having two, so it must not require a sign-out. Inertia requests get the protocol's 409 + X-Inertia-Location instead, so a blocked save re-renders the page rather than throwing up an error modal.
• Says so. DemoBanner renders a standing bar in every app shell, driven by the demo shared prop. It is per session, not per install — you, signed in to your own account on the same instance, do not see it, and your writes are not touched.

demo_read_only = false

With an admin demo configured, this hands anyone who can reach your sign-in page a writable superuser: the settings editor (including the SMTP password and OAuth client secrets), the user table, and maintenance mode. It is allowed — an instance whose database is rebuilt on a timer has a legitimate reason to want a writable demo — but it logs users.demo.writable_admin at WARNING on every settings load. Do not run it against a database you care about. Blanking demo_admin_email is the way to have a writable demo without that exposure.

Limits worth knowing

• The accounts are shared. Two visitors exploring the same one at once see each other's state, and with demo_read_only = false they can overwrite each other. Periodically resetting the database is the only real answer.
• demo_read_only matches on the session — the stamp a demo endpoint writes, or a session whose user_id is one of the demo accounts'. A bearer token is not covered directly, but minting one is itself a POST, so a read-only demo cannot get hold of one.
• The guard deliberately does not consult demo_mode. Switching demo mode off withdraws the offer — it does not retract the sessions already handed out, and promoting those live cookies to writable superusers on the way out would be the opposite of what "turn the demo off" means. A stamped session stays read-only (and keeps its banner) until it signs out or lapses. To end the sessions themselves, disable the demo rows in the user editor; a reconcile will not re-enable them.
• Signing in with real credentials (POST /api/users/auth/login) is allowed from a demo session — it is how you stop being the demo, it takes a real password, and the rate limiter still applies. Every non-demo sign-in clears the stamp, so a browser that once held a demo session is never locked out of the ordinary login.
• Each role's endpoint has its own auth_rate_limit_* budget (the limiter keys on path + client IP), so a bot hammering one cannot lock a visitor out of the other. Each click mints a session row, so a demo instance under real traffic may want the budget raised.
• The demo admin satisfies the first-run setup gate — an administrator exists, so /setup never appears. Seed your own admin first (smpy users create-admin, or the SM_USERS_BOOTSTRAP_* vars), because a read-only demo session cannot complete the wizard.

Login lockout

Both password logins — POST /api/users/auth/login and POST /api/users/auth/token — go through users.auth_local.lockout (GH #530). Each attempt takes a slot before its password is checked and a correct password gives it back, so checking for a free slot and taking it are one step: a parallel burst cannot get more password tries than the threshold. An unverified-email 400 gives its slot back too — it is not a failure.

• Account lock (database). A conditional, atomic UPDATE … RETURNING on users_user.failed_login_count takes the slot. The count restarts at 1 when the previous attempt is older than login_rate_limit_window_seconds. Every worker shares that count. The attempt that takes the last of login_lockout_account_failures (default 10) slots and fails sets locked_until to now + login_rate_limit_cooldown_seconds through the ORM, so the audit log records the lock, and is itself answered 429. While it holds, every password login for the account answers 429 — the correct password included. A success clears the count but never locked_until.
• Source throttle (host rate-limit store). login:ip:<ip>:<username> admits login_rate_limit_failures (default 5) attempts per window; a correct password clears it.
• Unknown usernames. A username with no account goes through the same account rules on the store — login:acct:<username> on a sliding window that matches the row's restart rule, login:acct-lock:<username> for the cooldown — so it trips on the same attempt, answers with the same status, detail and Retry-After, and stays locked for as long. The unknown path still spends a password hash, as fastapi-users already does.

The store is the host's app.state.sm.rate_limit_store — Redis when SM_REDIS_URL is set, per-worker counters otherwise (see Request guards). Without Redis and with more than one worker, an unknown username's counters are per worker (and do not survive a restart) while an account's are not, so that deployment shape can still tell the two apart; run Redis with several workers.

The refusal is always 429 {"detail": "Too many attempts — try again later"} with a Retry-After header. The login page shows its "too many attempts" message for it.

Admins see a locked badge on the users list and a "Locked until" row with an Unlock button on the edit page, backed by PATCH /api/users/admin/{user_id}/unlock. Unlocking is an ORM write and is audited; the failure counters are excluded from audit diffs so failed attempts do not flood the log.

The account default is 10 rather than 5 because anyone who knows an address could otherwise lock its owner out from any network; the per-source throttle still stops a single source after 5. OAuth, Keycloak and invite-link sign-ins involve no password and are not counted. The stock fastapi-users router (/api/users/auth-inner/*) is not mounted.

A successful password reset (POST /api/users/auth/reset-password, from the emailed link or an admin's reset link) also lifts the lock and clears the failure count: proving control of the mailbox is the standard way out of a lockout. Like an admin unlock it is an ORM write, so the audit log records it. The per-source throttle keys are left to expire, since they are keyed by an address the reset request does not know.

Trade-offs to know about:

• Anyone can lock a known address. The lock holds against the right password, so whoever knows an account's email can keep its owner out of password login for the cooldown, from any network. This is mitigated by the threshold of 10, by the per-source throttle (one source gets 5), by admin unlock, and by password reset now lifting the lock; OAuth/Keycloak sign-in is unaffected.
• A dead request still counts. An attempt takes its slot before the password is checked; if the request dies (client disconnect, worker crash) after taking it and before settling, the slot stays counted until the window passes. If it held the last slot, the account answers 429 until login_rate_limit_window_seconds after that attempt — no locked_until is written, since only a settled failure writes it.
• Without Redis, entries can be evicted. The in-process store caps its key count and evicts under that pressure, so a flood of distinct usernames can drop an unknown username's lock or a source's throttle early. Account locks live on the row and are unaffected. Set SM_REDIS_URL in production.
• Login values longer than an address can be (254 characters) are hashed before they become store keys, so a large request body cannot park a large key in Redis.

Mailer

mailer/ ships one implementation of the Mailer protocol, TemplatedMailer. It renders the bundled verify / reset / invite templates and sends each as a MailMessage through the framework mail sender (simple_module_core.mail.current_mail_sender()), looked up at send time. The transport (SMTP or console), its credentials and the mail.mailer health check belong to the mail module; the former mailer and smtp_* users settings no longer exist.

delivers_email reflects the installed sender, so screens that need to hand the one-time link back (reset-sent card, add people, resend and bulk invite) do so whenever the sender only logs. build_mailer(settings) returns the TemplatedMailer; a third-party Mailer can still be assigned to app.state.users.mailer.

OAuth providers

OAuth/OIDC sign-in is DB-settings-driven: a provider is enabled simply by setting its client_id + client_secret (and, for generic OIDC, a discovery URL) in the settings UI under Users at /admin/settings/. No code change or restart — register_event_handlers rebuilds the client cache (app.state.users.oauth_clients) on the SettingsReloaded event, so changes take effect live. Providers with no credentials are silently skipped.

Built-in provider keys (the {provider} URL segment):

Provider	Key	Notes
Google	google
GitHub	github
Microsoft (Entra ID)	microsoft	oauth_microsoft_tenant: "common" (any account), "organizations" (work/school), or a tenant GUID
Generic OIDC	oidc	any provider exposing a discovery URL (Keycloak, Authentik, Auth0, Zitadel, …); discovery failure logs + disables rather than breaking boot

A single dispatcher pair (/api/users/auth/{provider}/login + /callback) serves every provider; the client is resolved per request from the cache. The /callback returns a 303 redirect (not the stock fastapi-users 204) so Inertia lands on a real page, with the auth cookie attached. Find-or-create + email association goes through UserManager.oauth_callback (associate_by_email=True, is_verified_by_default=True); state CSRF uses the signed session cookie. Linked accounts are stored in users_oauth_account. A newly provisioned OAuth account is marked external (see below); an existing password account linked by email keeps its password and is left unchanged.

Importing users from another system

users stores passwords through fastapi-users' default PasswordHelper, so you can import hashed_password values from another system and users keep their existing passwords (no reset needed). Accepted formats:

Format	Prefix	Role
Argon2 (argon2id/argon2i/argon2d, PHC string)	$argon2...	Current scheme, used for all new hashes
bcrypt	$2a$ / $2b$ / $2y$	Accepted on import (deprecated)

Other formats (PBKDF2, scrypt, SHA-based, plain text) are not recognised, and such users cannot sign in until they reset their password. A bcrypt hash is verified as-is and transparently re-hashed to Argon2 on the user's next successful sign-in, through both the session login (/api/users/auth/login) and the bearer-token login (/api/users/auth/token). Leave hashed_password as NULL for accounts that should only sign in through an external IdP (see below).

External / SSO users

Users created through an external IdP (Google, GitHub, Microsoft/Entra ID, or generic OIDC) are provisioned with is_external=True and no local password (hashed_password is NULL). The OAuth callback's find-or-create only nulls the password + marks external for accounts it creates — an existing password account that gets linked by email keeps its password and stays non-external. External users sign in only through their IdP; roles are still assigned locally like any other user.

Every password-credential path guards against external users, server-side:

Action	Behaviour for an external user
POST /api/users/auth/login (session)	401 — treated like a missing user (a dummy bcrypt verify still runs, so timing doesn't leak that the account is SSO-only)
POST /api/users/auth/token (bearer)	401 — same guard as session login
POST /api/users/auth/forgot-password	200 but a silent no-op — preserves anti-enumeration
POST /api/users/admin/{user_id}/reset-password-link	409 — raises ExternalUserNoPasswordError; there is no password to reset

In the admin UI, the user list and edit page show an "External · SSO" badge, and the password-reset action is hidden with an explanation. Disable / enable, role assignment, and delete work the same as for any other user.

UsersAuthProvider

UsersAuthProvider (registered on app.state.auth.auth_provider in register_settings) is the AuthProvider the auth module's AuthMiddleware delegates to. On each request resolve_user:

• For a Bearer token, looks the token up in users_access_token and returns the active user.
• Otherwise reads session["user_id"], returns the cached context from session["user_ctx"] on a hit, else loads the User row with eagerly-loaded roles, builds a UserContext, caches it in session["user_ctx"], and clears stale session keys when the user is missing/disabled.

get_login_url() → /users/login, get_logout_url() → /users/logout. UsersModule.register_public_routes declares these prefixes anonymous (in addition to the framework defaults /health, /static/, /api/docs, /api/redoc, /api/openapi.json (only when served), /i18n/, /):

/users/login, /users/register, /users/forgot-password, /users/reset-password, /users/verify, /users/invite/accept, /api/users/auth/, /api/users/register.

Anything else without a session redirects to /users/login (or returns 401 JSON for /api/* / bearer requests).

Roles cache

roles_cache.py keeps an in-memory list of RoleSummary(id, name) on app.state.users.roles_cache. Refreshed at startup and on demand via refresh_roles_cache(app). Used by the admin UI to render role pickers without hitting the DB on every request.

Branding the auth screens

The sign-in aside copy lives under users.login.aside_* (aside_heading, aside_body, aside_check_sessions, aside_check_sso). A host replaces any of them with an override file host/locales/overrides/<lang>.json, keyed by the full dotted path (for example {"users.login.aside_heading": "Forest Observation System"}); overrides apply after every module catalog. The "Keycloak SSO" line renders only when the Keycloak module is installed (the login page receives a keycloak_installed prop). The python caption under the wordmark is hidden once branding.appName differs from the default SimpleModule.

Inertia pages

Auth flow:

• Users/Login.tsx, Users/Register.tsx, Users/ForgotPassword.tsx, Users/ResetPassword.tsx, Users/VerifyEmail.tsx, Users/AcceptInvite.tsx, Users/Profile.tsx.

Admin:

• Users/Users/Index.tsx (list + Create button), Users/Users/Invite.tsx, Users/Users/Create.tsx, Users/Users/Edit.tsx.

Components (under pages/Users/components/):

• AccountStatusCard.tsx — status block, including the External · SSO badge and the hidden-password-reset explanation for external users.
• DetailsCard.tsx — edit email + full name.
• DangerZone.tsx — delete-user action with confirmation.

Notes

• cookie_secure is automatically flipped to False in dev (SM_ENVIRONMENT=development) so login works over plain HTTP. Don't override it in non-dev environments.
• ThroughputLimiter (register, forgot-password, accept-invite, verify-token, /me/password) counts in-process, so with N workers its budget is up to N times the configured one. Password-login lockout does not have that limit — see Login lockout.
• The functional lower(email) index makes case-insensitive lookups fast on Postgres; on SQLite the lookup falls back to LOWER(email) = ? which still uses the regular index.