## Summary
Eliminates the Google Search Console "Missing field 'item' (in
'itemListElement')" critical error on 230 `/docs/guides/*` pages. The
schema was emitting `ListItem`s without an `item` field for intermediate
category nodes that lack a URL in the docs nav. Per [Google's
spec](https://developers.google.com/search/docs/appearance/structured-data/breadcrumb),
`item` is required on every BreadcrumbList position except the last leaf
— so url-less items are filtered out instead.
Also fixes a smaller quality gap surfaced during preview verification:
the `auth` section root in `NavigationMenu.constants.ts` was missing a
`url`, so auth trails were dropping the "Auth" breadcrumb level (`Docs >
Guides > JSON Web Tokens (JWT) > Overview` instead of `Docs > Guides >
Auth > JSON Web Tokens (JWT) > Overview`). Every other section root
already has a `url`; auth was the lone outlier.
## Testing
Tested locally via vitest (`pnpm --filter docs exec vitest run
lib/json-ld.test.ts`):
- [x] All-urls chain: every `itemListElement` has string `item` and
`name`
- [x] Leaf-url-mismatch: leaf uses `pathname` even when the chain leaf
URL differs
- [x] All-url-less chain: returns `null`
- [x] Empty chain: returns `null`
Tested on the preview deploy against 7 representative GSC-flagged paths:
- [x] `/docs/guides/getting-started/ai-prompts` — 4 positions, 0 missing
- [x] `/docs/guides/getting-started/ai-skills` — 4 positions, 0 missing
- [x] `/docs/guides/auth/jwts` — 4 positions, 0 missing (after auth fix:
includes "Auth")
- [x] `/docs/guides/auth/social-login/auth-google` — 4 positions, 0
missing (after auth fix: includes "Auth")
- [x] `/docs/guides/database/postgres-js` — 4 positions, 0 missing
- [x] `/docs/guides/storage/quickstart` — 4 positions, 0 missing
- [x]
`/docs/guides/platform/migrating-within-supabase/dashboard-restore` — 5
positions, 0 missing
Post-merge:
- [ ] validator.schema.org against deployed URL: 0 errors
- [ ] GSC "Validate fix" on the breadcrumb issue (1-2 week re-crawl
window)
## Linear
- fixes GROWTH-835
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved breadcrumb validation to filter incomplete entries and avoid
broken documentation links.
* Restored root link for the Auth navigation section so the Auth menu
item now navigates to /guides/auth.
* **Tests**
* Added comprehensive tests covering breadcrumb generation and edge
cases.
* **Refactor**
* Streamlined breadcrumb JSON‑LD schema generation for clearer output
and maintainability.
[](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45744)
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Summary
Emits `BreadcrumbList` JSON-LD on every `/docs/guides/*` page served by
`GuideTemplate`. Search engines and AI crawlers get an explicit
hierarchical signal for the docs site (the marketing site already
shipped JSON-LD via #45451). The chain prepends `Docs > Guides` to the
existing resolver output, so a page like `/docs/guides/auth/passwords`
produces a 5-level chain with the leaf URL set per Google's spec.
## Changes
- New `apps/docs/lib/breadcrumbs.ts`: pure pathname → chain resolver,
server-safe. Extracted from the existing client `useBreadcrumbs` hook so
the same logic runs in both contexts.
- New `apps/docs/lib/json-ld.ts`: `serializeJsonLd` +
`breadcrumbListSchema` mirroring `apps/www/lib/json-ld.ts`.
- `Breadcrumbs.tsx` (visual) now delegates to the shared resolver —
single source of truth for visual + SEO chains.
- `GuideTemplate` takes a required `pathname` prop and emits `<script
type="application/ld+json">` next to `<Breadcrumbs />`. Skipped when the
chain is empty (e.g., page not in nav menu). Middle items without URLs
(e.g., the "Auth" section root) omit `item`, matching the visual
breadcrumb.
- 8 explicit-prop callers updated; `[[...slug]]` callers already spread
`data` (which carries `pathname`).
## Scope
**Out of scope:**
- `/docs/reference/*` (SDK reference) — no breadcrumbs rendered today,
would need separate traversal over spec JSON.
- `/guides/troubleshooting/*` — uses its own template, not
`GuideTemplate`.
- `TechArticle` per-page schema — high maintenance for marginal value.
## Testing (Vercel preview)
```bash
curl -s https://<preview>/docs/guides/auth/passwords | grep -oE '<script type="application/ld\+json"[^>]*>[^<]+</script>'
```
Expect a script tag with the chain `Docs > Guides > Auth > Flows
(How-tos) > Password-based`, leaf URL
`https://supabase.com/docs/guides/auth/passwords`.
- [x] `/docs/guides/auth/passwords` — 5-item chain, leaf URL present
- [x] `/docs/guides/getting-started/features` — 4-item chain, all items
have URLs
- [x] `/docs/guides/getting-started/ai-prompts/<slug>` — special-case
chain (`Getting started > AI Tools > Prompts > <slug>`), leaf URL falls
back to pathname
- [x] `/docs/guides/database/database-advisors` (explicit-prop caller) —
chain renders
- [x] Visual breadcrumb on the same pages still renders correctly
- [ ] Validate output through [Google Rich Results
Test](https://search.google.com/test/rich-results) on a deployed preview
URL
- [x] `/docs/guides/troubleshooting/<slug>` — no JSON-LD emitted
(different template, intentional)
## Linear
- fixes GROWTH-820
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added JSON-LD breadcrumb markup to guide pages to improve
search/discovery.
* **Improvements**
* Centralized breadcrumb generation for consistent, accurate breadcrumbs
across guides.
* Multiple guide pages updated to ensure breadcrumbs and page context
display correctly.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
