How to type nextjs endpoint with TypeScript?

Question

Is there a way to type a nextjs endpoint, so when sending a request I directly know the returned type?

Example Endpoint

const getHandler = async (
    req: NextApiRequest,
    res: NextApiResponse,
    prisma: PrismaClient
) => {
    // query data and type it somehow?
}

Example Query

const {data: myData} = useQuery(["myKey"], () => axios.get("/api/myEndpoint"))

No matter what I try, the type of myData is always AxiosResponse<any, any> | undefined

I know that I just can create an interface and type type response again, but is there any other way? I appreciate every advice, thanks in advance!