Is it possible to call a mutation in a Next.js API route?

import { NextResponse } from 'next/server';

import { stripe } from '@/lib/stripe';
import { useMutation, useQuery } from 'convex/react';

import { api } from '../../../../../convex/_generated/api';
import { Id } from '../../../../../convex/_generated/dataModel';

// Main POST handler
export async function POST(req: Request): Promise<NextResponse> {
  const addIntegration = useMutation(api.integrations.addIntegrationByUser);
  try {
    const body = await req.json();
    const code = body.codeId;

    const result = await stripe.oauth
      .token({
        grant_type: 'authorization_code',
        code: code,
      })
      .catch((err: unknown) => {
        console.log(err);
      });
    if (result) {
      await addIntegration({
        planId: '' as Id<'plans'>,
        userId: '',
        integration: '',
        value: [
          {
            stripeUserId: result.stripe_user_id,
            accessToken: result.access_token,
            refreshToken: result.refresh_token,
          },
        ],
      });
    }

    console.log(result);
    return NextResponse.json({ test: '' });
  } catch (error) {
    console.error('[PROJECT_POST]', error);
    return new NextResponse('Internal Server Error', { status: 500 });
  }
}