Open Mercato Night · AI agents build a custom CRM, live to enterprise standards
Wednesday 11 November 2026
Starts 6:30 PM
Finishes 11:00 PM
Organized by Michal Witkowski
Venue: La Serra
Address: Rua Joao da, R. João de Oliveira Miguens 1, 1300-611 Lisboa, Portugal
Portugal Lisboa
About this event
A hands-on evening where we build a custom CRM on Open Mercato, live, with a AI coding agent. The piece we build is the one no sales team can buy ready-made. Enterprise grade, not vibe coding: every step goes through a spec, a review and tests before it counts as built. Follow along in your browser or watch with a drink, then stay for the open floor, where we work out what an agent should be allowed to touch.
What we do
We open Open Mercato, an open-source system that arrives with CRM and sales modules already in it, and spend the evening turning it into one shaped for a specific company. You write the spec, the agents build against it.
First we go through what the system already does, by clicking. That part ends with a customer accepting a quote in their own browser while the order appears behind them.
The company we use tonight gets customer enquiries by email with technical parameters, and someone retypes them into a spreadsheet to get a price out. We build that piece in the room, and then we get into what makes an agent build well and what you still check yourself.
The shape of the evening
18:30 Start
19:00 What is already in Open Mercato modules.
19:30 We build the missing piece with the agent.
20:05 A short talk on what makes an agent build well
20:25 Drinks and open conversation until the place closes.
What Open Mercato is
An open-source foundation for business systems, MIT-licensed, with 48 modules in the core. They opened the agent tooling too: skills, the harness around them, and Cezar, their cockpit for running AI coding agents. That is what turns a written business spec into working screens.
Who it is for
Founders and operators carrying a revenue process no software covers, and engineers who want to see where an agent stops. The last hour is unstructured on purpose.
From 20:25 it is open networking at the bar
What you need
Nothing, if you came to watch. Every seat gets a hosted Open Mercato sandbox, so there is no install and no setup. A six year old laptop is enough. You do not need to know how to code.
You leave with the spec you wrote and the code that came out of it.
Where and when
Wednesday 11 November at La Serra, Rua João de Oliveira Miguens 1, next to LX Factory. Doors 18:30, we start 19:00, done by 20:25, drinks until 23:00.
Hosted by Michał Witkowski of thegoodcode, a certified Open Mercato partner.
This page last updated Sunday 8 November 2026 at 21:59.
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