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Notes from building a ticketing platform

Guides with working tools in them, the maths behind ticket fees, and the odd war story from the code. Written by the people who build Hi.Events.

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ProductYou can now run Hi.Events from Claude and ChatGPTConnect Claude or ChatGPT to Hi.Events and ask it to look up attendees, resend tickets, report on sales and set up events. What it can do, some less obvious uses, and what it can't do.
GuideHow to put together event sponsorship packages, with a free templateMost sponsorship packages are three prices and a list of logos. Here's how to build ones a sponsor can say yes to, with a template you can fill in and download.GuideThe best Eventbrite alternatives in 2027, with what each one really costsWhy organisers are leaving Eventbrite, what nine alternatives charge next to it, and the cases where Eventbrite is still the right call.GuideThe best event ticketing platforms going into 2027I run one of these, so it's first. Here's why, what each of the others does better, and what 2026 changed for anyone selling tickets.ReleaseHi.Events v2: recurring events, reserved seating and a box officeThe biggest release since we started. Events that repeat, seats people can pick, a till for the door, and a much nicer way to set up tickets.EngineeringRecurring events are harder than they look"Every Tuesday at 8" sounds like one line of code. It turned out to be a few months of clocks, calendars and people who had already bought tickets.GuideHow many people do you need on the door?The length of a door queue comes down to when people arrive and how fast you can scan them. Set up your own night in the simulator and watch it play out.FeesWhat it actually costs to sell a €20 ticketFollow one €20 ticket from the buyer's card to your bank account, and see what every ticketing platform takes along the way.

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