Kompetenz-kompetenz is widely codified, including in Article 16 of the UNCITRAL Model Law and in most major institutional rules. It works alongside, and is reinforced by, the separability doctrine, which treats the arbitration clause as a distinct agreement from the underlying contract — so a challenge to the main contract doesn't automatically defeat the arbitrator's power to first rule on its own jurisdiction.

Jurisdictions differ on the doctrine's exact reach. The 'positive' effect, letting the tribunal decide its own jurisdiction first, is nearly universal. Some jurisdictions, notably French law, also apply a 'negative' effect requiring courts to defer to the tribunal's first look before entertaining a jurisdictional challenge themselves — whereas US courts typically retain ultimate de novo review over an arbitrator's jurisdictional ruling absent a clear delegation clause.

Juricratic treats kompetenz-kompetenz together with any applicable delegation clause as jointly determining which forum's gate the model even simulates first — structurally similar to a subject-matter-jurisdiction threshold branch that must resolve before merits-stage dials become meaningful.

An arbitral tribunal facing a jurisdictional objection typically rules on its own jurisdiction first rather than staying its proceeding to wait for a court to decide the question, though a resisting party can often still seek later court review depending on the seat.