The phrase "a necessary skill for" is correct and usable in written English.
It can be used when discussing skills that are essential for a particular job, task, or situation.
Example: "Communication is a necessary skill for effective teamwork in any organization."
Alternatives: "an essential skill for" or "a vital skill for".
Listening to what you need to write is a necessary skill for a writer.
Positive spin, a necessary skill for reframing many of the sometimes dismal interactions around building success, is the highest good.
With the recession forcing us to make do with what we have, being resourceful is now a necessary skill for today's generation of leaders.
The sport developed from the riding of rapids in small boats and rafts, a necessary skill for explorers, hunters, and fishermen.
Phonological knowledge is a necessary skill for learning to read, but the process of learning to read can facilitate the development of this knowledge.
It's a bit of both – identifying a negotiator's BATNA is a necessary skill for developing the best strategies to use at the bargaining table.
While low concentrations of AM-356 urged on the sperm, higher concentrations dampened their ability to swim aggressively--a necessary skill for a successful sperm.
However, the organization of these disciplines by organ system did not lend itself to broader integration across the organ systems, a necessary skill in caring for more critically ill patients with complex problems involving multiple organ systems.
O'Donnell's background involves an understanding of conversion rates from a UI/UX perspective – a necessary skill set for creating a better tablet shopping experience.
It burned down in the fires; now its students lead the nation in disaster reliance, a sadly necessary skill for children living in Australia's changing climate.
If you have never had a conflict, you have never connected to the level that pushes the strings to a very necessary skill for growth: Connecting.
