Nuxtjs Guideline: DataFetching — Use server option to control fetch location. Description: Choose where data is fetched. Do: server: false for client-only data. Don't: Server fetch for user-specific client data. Good Example: useFetch('/api/user-preferences', { server: false }). Bad Example: useFetch for localStorage-dependent data. Severity: Medium. Docs: https://nuxt.com/docs/api/composables/use-fetch.