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T3 Stack · Hook

useMutation

useMutation creates a tRPC mutation hook for changing server data. Its callbacks can update cached data, undo failed optimistic updates, and refresh related queries.

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Syntax

trpc.<router>.<procedure>.useMutation(options)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • useQuery
  • useContext
  • onMutate
  • onError
  • onSettled
  • invalidate
  • setData
  • getData

Source: tRPC • Create T3 App. Checked 2026-11-03.