The Agility challenge token was an item won in Treasure Hunter between 12 September 2014 to 15 September 2014 that could be used to complete Captain Haskell's faster, but less rewarding challenges. It can also be exchanged for 1 Raffle ticket at the rate of 10:1 twice a day.
Activating a token caused it to turn into the Agility challenge token (active) and become unstackable. It could be reverted anytime by right clicking and selecting "Abandon" at the cost of losing progress.
They could be traded, but only for the same amount of other tokens.