You have the ability to use psionic techniques that can reproduce the effect of non-Tinker powers. While your Shard provides you with the basics and an intuitive knowledge of how to shape the energy, you will have to research and experiment to produce more powerful results. At most, you will be as strong as Eidolon was in his prime.
Your pool of energy is enough to use your most powerful techniques a dozen times in a short time span. The pool takes 30 minutes to fully recharge. Permanent effects like constructs, buffs, and auras reserve part of your reserve while they are active and release the energy when they are canceled or expire.