Grabenstein, Chris. Smartest kid in the universe (Series) #3

Twelve-year-old Jake McQuade is the smartest kid in the universe, but if he wants to keep his title he will have to figure out a way to defeat the villain who steals his ingestible knowledge capsules

Ages 8-12

Jake McQuade's the smartest kid in the universe—or at least he was. But just as his training with the secret agency known as the Consortium is about to start, Jake's jelly beans go missing! And to make matters worse, they (and Jake's genius!) might be wearing off right when he needs his smarts most! Jake needs to solve this mystery fast. Who stole the jelly beans and why? Can Jake figure out what's going on, recover the missing jelly beans, and stop a high-tech heist before it's too late?!

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