A Next.js 14 platform built on React Server Components and TypeScript, designed to serve
multiple brands from one application rather than one deployment per brand. It runs live as
WellnessInbox — a health and wellness publication with a newsletter, a category-driven
article archive and an authenticated AI assistant.The multi-brand part is not a roadmap item. Middleware reads the incoming Host header,
resolves it against a domain configuration, and writes a domainInfo cookie carrying the
domain type and niche slug. Server Components and application context read from there, so a
second brand is a configuration entry rather than a fork.
Third Party Integrations
Sanity
Content is authored in Sanity and queried with GROQ. Publishing does not wait on a rebuild:
Sanity webhooks trigger targeted cache revalidation, so an edit goes live without redeploying
the application or invalidating unrelated routes.
Supabase
Server-side authentication through @supabase/ssr, wired into the same middleware that
handles domain resolution — so auth state and tenant resolution are settled in one pass
before any page code runs.
OpenAI, via the Vercel AI SDK
The Health Assistant streams from an edge-runtime route, gated behind Supabase auth so only
signed-in readers can reach it.
Challenges and Learnings
Email scanners were unsubscribing readers
The unsubscribe endpoint originally acted on GET. Email security scanners and link
prefetchers issue GET requests to every URL in a message — so recipients were being
unsubscribed by software that was merely checking whether the link was safe, without any
person ever clicking it.The fix was to make GET inert. It now renders a confirmation screen and nothing else; the
mutation runs only on an explicit POST from a button press, which a GET-only crawler never
triggers.
Technical SEO as a build concern
Typed JSON-LD, dynamic metadata, RSS, programmatic sitemaps, and Open Graph images generated
per-route through ImageResponse — with the OG endpoint HMAC-signed so it cannot be used as
an open image-rendering service by anyone who finds the URL.
Outcome
Related projects
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