# Type Alias: TRPCMutationKeyWithPrefix

> 

> **TRPCMutationKeyWithPrefix**: \[`string`[], `...TRPCMutationKeyWithoutPrefix`\]

Defined in: [tanstack-react-query/src/internals/types.ts:138](https://github.com/trpc/trpc/blob/7c907acfd8b31929214792e3b8c2ad7a8ac72563/packages/tanstack-react-query/src/internals/types.ts#L138)

A tRPC mutation key that starts with a key prefix.

## See

https://trpc.io/docs/client/tanstack-react-query/usage#keyPrefix