The quick answer is , you will not be banned for using a save editor in No Man's Sky (NMS). Hello Games generally allows modding and save editing
Your feature could include a “safe mode” that only allows cosmetic or QoL changes (e.g., base building limits, terrain edits, discovery timestamps). nms save editor ban
What to Do If You've Been Banned
because the game is primarily a non-competitive sandbox. While some consider it "cheating," there is no built-in anti-cheat or ban system for these tools. However, using them to grief other players The quick answer is , you will not