# `react-doctor/tanstack-start-missing-head-content`
Add `` inside `` in your __root route — without it, route `head()` meta tags are silently dropped
- **Category:** TanStack Start
- **Severity:** warn
- **Source:** oxlint-plugin-react-doctor
- **Framework:** tanstack-start
- **Enabled when:** framework=tanstack-start and capabilities=tanstack-start
## Validation prompt
Use this to decide whether a fired diagnostic is real or a false positive.
Fires only in files matching __root.(ts|tsx|js|jsx) that contain no JSX element whose tag name is HeadContent. The check is local to the file — the rule does not follow imports. False positive: HeadContent is rendered indirectly through an imported layout component the rule cannot inspect.
## Fix prompt
Use this once validation confirms the diagnostic is real.
Import HeadContent from @tanstack/react-router and render inside the of the root component's HTML shell. Without it, meta tags returned from each route's head() function are silently dropped, including title, description, OG tags, and link/script entries. See https://tanstack.com/start/latest/docs/framework/react/api/router/HeadContentComponent