Bonsai edge delivery lab · staging

Vercel custom-origin readiness

This storefront is the controlled origin used to prove that Bonsai can preserve a customer hostname while Cloudflare resolves the request to a Vercel deployment behind the scenes.

Raw Vercel origin HTTP 200 Preserved-Host fallback HTTP 200 Cloudflare managed TLS active

Storefront origin

Readiness hostname

https://vercel.storefront.zone

Underlying Vercel project URL

https://bonsai-vercel-storefront.vercel.app

The project URL is the non-vanity platform address. The readiness hostname is registered on the same Vercel project so Vercel accepts its Host header and presents valid origin TLS.

Customer-side DNS baseline

Authoritative zone

storefront.zone · Cloudflare DNS

Current record

vercel.storefront.zone CNAME cname.vercel-dns.com · DNS only

Rollback record

The same DNS-only Vercel CNAME

This remains the direct-origin baseline. No customer traffic points at the Bonsai fallback while readiness is being tested.

Bonsai provider path

Cloudflare for SaaS fallback

https://ai.hibonsai.red

Worker route

ai.hibonsai.red/* → edge-worker-stg

Customer-host route

vercel.storefront.zone/* → edge-worker-stg

The shared edge worker keeps existing direct customer-zone delivery and selects the new Vercel method only for typed custom-origin customers.

Origin resolution override

Preserved request identity

Host: vercel.storefront.zone

Provider request-override DNS

origin-vercel-storefront-zone.hibonsai.red

Vercel target

A 76.76.21.21 · Cloudflare proxied

Cloudflare changes DNS resolution with cf.resolveOverride; it does not replace the customer Host header Vercel uses to select the project and certificate.

Request flow

01 Customer request Public URL and Host remain vercel.storefront.zone.

02 Bonsai fallback ai.hibonsai.red invokes edge-worker-stg.

03 Resolution override Cloudflare resolves through the provider-owned origin record.

04 Vercel origin Vercel receives the preserved Host and serves this project.

Reproduce the edge proof

Send the customer hostname through the staging fallback without changing public storefront DNS.

curl -i https://ai.hibonsai.red/ \
  -H 'X-Forwarded-Host: vercel.storefront.zone'

Expected evidence: HTTP 200, this page body, a Vercel request identifier, a Cloudflare Ray, and the Bonsai WebMCP injection. An unknown forwarded hostname returns HTTP 502.