The former Big Brother star, who hit the headlines last year for her alleged affair with Ryan Giggs, will be offered up as a date to male contestants on the E4 series.
However, the men will be unaware that their partners are watching their attempts to seduce her, according to The Sun.
Thomas will likely appear on the opening episode of Tool Academy, when contestants are traditionally duped into thinking they are on a different show that encourages their upsetting behaviour, before the truth is revealed.
The couples then undergo a relationship crash course, with the most improved man winning £25,000.
Tool Academy, which is hosted by Rick Edwards, will return for a third series later this year.
Thomas has long been rumoured to be embarking on a genuine televised quest for love in Channel 5's The Bachelorette. She has also reportedly filmed a cameo for Shameless.