# Chapter 4) The React `useQuery()` / `useMutation`
feat: (customizable) query key prefix
✅ accepted-PRs-welcome💰 wontfix/$$$$
feat: wanna default handle callback for `useMutation` in `react-query`
✅ accepted-PRs-welcome
Context type of queries and mutations isn’t inferred when using React Query
👉 good first issuewontfix