Hex wrenches: Standard sets usually include 1.5,2,2.5,3,4,5,6,8 and 10mm. You’ll use 4,5,6 most often. You will use smaller ones for small derailleur adjustments and a few other small bolts. 8 and 10mm for crank bolts.
most likely you will have 14gauge nipples on the wheels so Park SW2 or similar should do the trick for spoke wrench
Then a couple of small and medium size flat head and phillips screw drivers and you should be able to do most basic maintenance tasks.
If you anticipate doing your own cable and housing work, you might also get some cable and housing cutters.