Question

what skills and experience does a spy need?

Answer 1

You need to be intelligent, and you also need to be stealthy.

Answer 2

1) stealthy (as Igreen said)
2) good communication skills
3) Good attention to detail
4) Ability to follow instruction accurately and efficiently
5) Intelligent (as Igreen said)
6) Good combat ability

There are many, these are just a few

Hope this helped