Telepathic Affinity( Complete Psionic, p. 60)
The entity you host gives you the ability to better communicate with other creatures.
A psionic entity takes up residence within your flesh. The entity grants you the following psi-like ability:Psi-Like Ability: 1/day--mindlink or detect psionics. Manifester level 1/2 your HD; save DC 11 + your Cha, Int, or Wis modifier.
You can use one or the other of your entity-granted psi-like abilities once per day--you cant use both. Once you use one, you can't use the other for the rest of the day.