A free mod for Kingdom Come: Deliverance, by neurozaneurona.

A thief is a sneak who steals valuable goods, often from people, and takes them away without giving harm to the victims. Most of the time, victims are unaware that their goods have been stolen. It is also a crime in some countries, such as Italy, Spain, Germany, and Poland. In the US, it is a crime only if you take something that belongs to another person.

The Natural Born Thief mod adds an extra pickpocket stealth action. This will help you inflict more damage. It will also make your lock picking and pickpocketing more effective. It increases the XP for lockpicking, stealth actions, and pickpocketing. Also, A pocket search takes six seconds to complete, giving you six additional seconds to steal stuff.