No, nothing that is not Solar Sorcery during Calibration can summon them as far as I know which is a bit of a problem if we want to try because this world does not have Calibration.
Wrong understanding, they were asking if tham could summon demons in 3 edition. Which is can't because they killed the Tham system.
Edit:
Critian Caceorte would you mind if we ask about other demons we may summon? I do think calling JANEQUIN is one of the best options but would like to get some idea of what they may be like to better convince others.
The Compass of Celestial Directions, Vol. 5: Malfeas Pages 129, 130, 131.
Benefaction—All-Encompassing
Divine Decree—Improbable events
Essence Plethora—10 extra motes
Harrow the Mind—Persuade the target to believe something wildly implausible
Impromptu Messenger—Her visage appears on a face card in a card game
Malediction—All-Encompassing
Materialize—Costs 80 motes
Mirror of the Infinite Wardrobe—Any mortal, feline or vulpine shape, but her eyes always remain the same
Natural Prognostication
Principle of Motion—Janequin possesses up to nine banked actions
Spice of Custodial Delectation—Gambling
Stoke the Flame—Recklessness or loss of self-control
Touch of Eternity—The recipient shrugs off curses and enchantments
Wyld Armor—For three motes, Janequin gains +6 to resistance against the Wyld for one day; she may extend this benefit to others for two additional motes per person
First (Ability) Excellency—Dodge, Melee
Third (Ability) Excellency—Athletics, Larceny, Melee, Socialize
Infinite (Ability) Mastery—Dodge, Melee
Divine (Ability) Subordination—All-Encompassing; Melee(Conviction Flaw of Invulnerability)
Other Notes: Janequin is a random factor, a roving snag in the Loom of Fate, and providence has no hold on her. She is wholly immune to all forms of astrology (mortal, infernal, and Sidereal), and opponents do not gain the benefits of the Destiny Background while facing her.
I think having a fateless chaos bring sent to discover info to be a great idea.