Rally — Event RSVP Page

One event. One page. One tap to RSVP.

Rally is a real, buildable app on the Hanzo stack — a single-event page with RSVP capture. Guests see the event and reply yes/no with a headcount; the host manages the details and watches the guest list fill in. Fork it on hanzo.app and deploy live on Hanzo Cloud.

• UI — @hanzo/gui (the Hanzo design system) under Vite + React 19. 100% gui primitives — no Tailwind, no second kit.
• Auth — @hanzo/iam, OAuth2 PKCE against hanzo.id. No local passwords.
• Data — @hanzo/base, the IAM-native, org-scoped data plane. The event and every RSVP are real Base rows.

The three views

• Event page — a color-flooded hero (date · title · place) with a cream ticket-stub RSVP card. Public: the CTA is a one-tap Hanzo sign-in. Signed in: the live RSVP form (going / can't-make-it · guest headcount · note).
• Attendees — the host's guest list with live counts: heads coming, replied yes, spots left.
• Edit — the host creates and updates the single event (title, description, date/time, location, capacity).

The event page is public by design — the invite is the landing, and sign-in is what unlocks RSVP + management.

Stack (pinned)

Package	Version
react / react-dom	^19.2.4
@hanzo/gui + @hanzogui/config	7.3.0
@hanzo/iam	^0.13.1
@hanzo/base	^0.2.1
vite	^6 (@vitejs/plugin-react)
typescript	5.9.3

Run it

npm install
npm run dev        # http://localhost:5173
npm run build      # tsc --noEmit && vite build  ->  dist/
npm run preview    # serve the production build (SPA fallback on)

Out of the box it runs against live Hanzo (hanzo.id + api.hanzo.ai) — no config needed to see the invite and the sign-in flow. Copy .env.example to .env to point at a different environment.

Environment contract

Only VITE_-prefixed vars reach the browser (this is a static SPA — no server). Defaults in parentheses.

Var	Purpose
VITE_HANZO_IAM_URL (https://hanzo.id)	OIDC issuer.
VITE_IAM_CLIENT_ID (hanzo-app)	IAM application (<org>-<app>). A dedicated event-rally client is provisioned at deploy; its redirect-URI list must allow this deploy's /auth/callback.
VITE_HANZO_REDIRECT_URI (${origin}/auth/callback)	PKCE redirect.
VITE_HANZO_BASE_URL (https://api.hanzo.ai)	Browser-reachable Hanzo Base data plane. Deploy injects the provisioned URL.

How auth works — ambient IAM

login() starts an OAuth2 PKCE S256 redirect to hanzo.id; hanzo.id returns to /auth/callback, where handleCallback() exchanges the code for tokens (stored in localStorage, refresh-aware via offline_access). Every deployed app is a static site at <slug>.hanzo.app; there is no server token — the SPA authenticates the user in the browser and carries the resulting IAM JWT to Base.

The one deploy requirement: the IAM client (VITE_IAM_CLIENT_ID) must list this origin's /auth/callback as an allowed redirect URI.

How data works — Base from schema.sql

schema.sql is the app's databaseSchema (SQL DDL): the event and rsvps collections. On publish, Hanzo Cloud translates each CREATE TABLE into a Hanzo Base collection (provisionBaseFromDDL, additive + idempotent). Base manages id/created/updated/owner/org, stamps owner+org from the verified IAM principal, and scopes every row to the caller's org by the rule @request.auth.org_id = org — a teammate in your org sees the row; other orgs cannot. Runtime read/write is @hanzo/base/react (useQuery/useMutation) carrying the IAM token.

Deploy — Hanzo Cloud

hanzo.yml declares a static build (npm run build → dist/, served at <slug>.hanzo.app) plus the Base schema to provision and the env to inject. Do not build a container image locally — Hanzo Cloud owns builds and deploys. CI here only proves the template compiles green.

Layout

src/
  main.tsx          entry
  providers.tsx     GuiProvider -> IamProvider -> BaseProvider(client=IAM-token)
  app.tsx           route (/auth/callback) + auth gate (public event ↔ host shell)
  theme.ts          the one accent palette
  env.ts            the VITE_ env contract, one place
  gui.config.ts     createGui(defaultConfig from @hanzogui/config/v5)
  iam.config.ts     IAM PKCE config
  lib/base.ts       BaseClient carrying the IAM bearer token
  lib/event.ts      event row + sample + date formatting
  lib/rsvp.ts       rsvp row + headcount tally
  auth/callback.tsx PKCE return leg
  views/            event · rsvp · attendees · edit · host · ui (Field/Pill/Stepper/Cta)
schema.sql          databaseSchema (event · rsvps) -> Base collections on publish
hanzo.yml           Hanzo Cloud build/deploy manifest