Pre-Event Work

Project development carried out before the official hackathon window opens. Class A events prohibit it; Class B events may permit it with disclosure; Class C events expect it.

GrowingLast updated 2026-05-03

Pre-event work is project development carried out before the official hackathon window opens. Class A events prohibit it outright as a structural defense of the fair-fight commitment; Class B events may permit it with disclosure depending on the specific rules; Class C events expect it as part of what the event is for. Devpost-listed projects like .gitcheck automate timeline audits by analyzing GitHub commit history against the official hackathon window to detect pre-existing or suspicious development activity, and MLH's standard rules language explicitly requires the no-pre-event-work rule for events in the league's network. See no-ringers-without-disclosure and ringer-team.