TanStack Start

Use this skill to apply current, source-backed TanStack guidance. Keep answers aligned with installed package source first, official TanStack docs second, and package-shipped skills third. Read references/current-authority.md when APIs, versions, CLI commands, or source freshness materially affect the task.

Decision Tree

• Need DB, secret, filesystem, or private API work? Use a server function or server route; never put it directly in a loader.
• Need same-origin app RPC? Use createServerFn(...).validator(...).handler(...).
• Need public or cross-origin HTTP? Use Start server routes through route server.handlers.
• Need auth? Enforce it in server functions/routes or middleware; beforeLoad is UX only.
• Need to know where code runs? Read rules/execution-model.md before designing loaders.

Rules