The NCAA has issued stringent certification requirements for agents wishing to represent US collegiate basketball players who want to test the NBA draft waters.

The governing body of US collegiate sport issued a memo to agents on Monday, and posted the certification requirements on its website on Tuesday.

The requirement for a bachelor's degree saw the criteria quickly dubbed the "Rich Paul Rule" - a reference to the agent of NBA superstar LeBron James, who doesn't have a college degree.

James took a swipe at the NCAA on social media, tweeting "#TheRichPaulRule" before a subsequent post packed with laughing emojis that read, "Can't Stop, Won't Stop! They BIG MAD and Scared. Nothing will stop this movement and culture over here. Sorry! Not sorry."

Paul, founder of the Klutch Sports Group, also represents NBA stars Anthony Davis, Ben Simmons and Draymond Green, among others.

But he wouldn't meet the criteria to offer guidance to collegiate players interested in 

exploring their NBA draft options while remaining eligible to return to collegiate basketball.

The criteria also include ­National Basketball Players Association agent's certification for at least three consecutive years, professional liability insurance and completion of an in-person exam that will be offered at the NCAA office in Indianapolis, Indiana in November.

Agents also will need to fill out an application and have a background check.