
Co-Founder @OpenMercato Exited founder of: @DivanteLTD, @callstackio, @useAlokai BA @elevenlabs @medusajs @wordware and 40 more..
Wroclaw, Poland
Joined December 2008
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Think Lovable for your ERP & CRM… but with your stack and architecture.
Open Mercato Sandboxes are live 🚀
- Close your laptop. Agents keep working.
- Any tech stack
- Jev, Claude Code & Codex
- VS Code, Git, live preview & sharing
- Free AI + compute credits to start
- Compute billed by the minute
youtu.be/0jdlGSlZusI?is=ylGN…
Coding agents that work 24/7.
On your own server.
Queue the backlog, close the laptop, review the PRs from your phone.
cezar.run
Nobody who tries our agent orchestrator asks how many agents it runs.
They ask how many hours they have to sit next to it.
So we scored 11 tools (Claude Code, Codex, Copilot, Antigravity, Cursor...) on one thing:
how much of your attention they give back.
Full breakdown, ranking, and the gap list we keep public for Cezar.
openmercato.com/blog-posts/y…
Piszę pięć nowych rozdziałów do The 5.
+5 czyli kolejnych latach rozwoju i budowania firmy samobieżnej. Takiej, która rośnie też, gdy jesteś na wakacjach.
1) Jak zadbać o siebie jako founder. Żeby rozwój firmy nie odbywał się stale kosztem Ciebie.
2) Jak budować nowe produkty. Silnik wzrostu z pierwszych 5 lat w końcu staje się wąskim gardłem.
3) Jak zwiększać wartość firmy. Niezależnie od tego, czy chcesz ją sprzedać, czy prowadzić przez następne dwadzieścia lat.
4) Jak mądrze wykorzystać AI ale też być odpornym na AI. Tu praca wspólna bo wszyscy się tego uczymy.
5) Jak przekazać władzę w firmie i co robić po :)
cart.easy.tools/checkout/bra…
Weekend inbox check. Most emails awaiting my reply are from…. my own AI agents.
I’ve automated giving myself more work. Great job Tomek!
“Human in the loop” = me doing cleanup on Sunday.
Anyone getting actual results AND less work? Show me what you stopped having to do.
I’m probably richer than a 16-year-old Taylor Swift fan.
She’s still a better customer than I am.
I’ll play a few songs on Spotify. She might spend 5k for a concert.
I used to make this exact mistake in sales: confusing a client’s wealth with their willingness to pay us.
A big brand showed up and I mentally spent their budget before we’d even sent a proposal.
“Wow. Coca-Cola!”
Smaller companies often ended up spending more with us. Our work was closer to how they made money. Closer to the problem keeping the owner awake.
At a large company, we could be one of hundreds of vendors. At a smaller one, we could help fix something holding back the entire business.
That changes the budget. And how long the relationship lasts.
How much does solving this problem matter to this customer?
A famous logo looks great in your pitch deck.
Being essential gets you paid.
Looking for 5 new global implementation partners for Open Mercato before the end of the year.
Q4 for Open Mercato means one thing: going global.
Open Mercato is an AI-supportive CRM / ERP framework. It ships with 80% ready. Someone has to build the last 20% for the client. That someone is a partner.
The model is simple. We sell the enterprise license. Partners do the implementation and keep the services revenue. We certify, train and send leads.
Oct 15 - Warsaw - Tribes Day
Oct 27 - Katowice - European Congress of SMEs
Oct 28 - Wrocław - Made in Wro
Oct 29-31 - Goa, India - React India
Nov 7 - Poland - Forest Planting for Entrepreneurs (yay!)
Nov 9-12 - New York - ElevenLabs Summit
Nov 15-16 - New York - JS Nation
Nov 15-19 - San Francisco
Nov 19-22 - Las Vegas
Dec 8-11 - Warsaw
If you are in one of these three groups, let’s meet.
Invite your friends to read my Substack.
Get AI-Proof Agency Workshop Handout and a Full Mentoring Session with me.
tomaszkarwatka.substack.com/…
The worst business advice I got turned out to be correct.
Just not for my stage.
Most business advice comes in pairs that cancel each other out.
Which common business advice didn't work for you?
I built and sold two agencies. If I started again, here’s how I’d get the first 10 clients.
I co-founded two software agencies. We grew them to 350 and 200 people and sold them in 2021 and 2025.
Here’s how I’d do it.
CLIENT #1: START WITH TRUST
List 10–20 people who know your work. Former bosses, colleagues, people you’ve worked with.
Ask what’s broken in their business. Listen before pitching.
Offer a small, paid project:
- One clear outcome.
- Fixed scope and price.
- 2–4 weeks.
Be honest about your experience. You can be new to running a company and still be good at the work.
Charge less if you need to. Avoid free. You need to learn whether someone will pay.
CLIENTS 2–10: SELL IT YOURSELF
You need to hear the objections firsthand. That’s how you learn what clients actually buy.
- Pick the industry or technology where your first projects went best.
- Turn results into case studies. Use real numbers.
-Ask happy clients for two introductions while the result is fresh.
- Partner with a software vendor whose customers need implementation.
- Start turning down work that pulls you away from your niche.
At Divante, focusing on ecommerce gave buyers a much clearer reason to call us.
Another way in: contribute early to a technology with growing demand. Becoming a core contributor gives clients a concrete reason to choose you.
Disclosure: I’m now building Open Mercato, an open-source ERP/CRM framework, so I see this from the software vendor’s side too.
Also, watch client concentration. One client paying 50% of your revenue has a lot of control over your business.
BEYOND 10: MAKE SALES REPEATABLE
Ten clients isn’t a magic threshold. But by now, you should see patterns worth documenting.
- Write down qualification questions, pricing rules and how you build proposals.
- Hire a salesperson once you have something that works for them to repeat.
- Publish useful reports, benchmarks and project breakdowns.
- Build reusable IP from problems you keep solving.
- Grow existing accounts where you can deliver more value.
Our work on an open-source ecommerce frontend helped bring international enterprise leads. It later became a separate product company.
That took time. Start by making each project leave something useful behind for the next one.
A practical test: take two weeks off. Do leads still come in?
Can your team move deals forward?
Where are you stuck: landing client #1, reaching ten, or making every sale depend less on you?
My software bet for the coming years: github.com/open-mercato/ceza…
My substack for agencies: tomaszkarwatka.substack.com/…
Tomasz Karwatka retweeted
This is the first program like that in Poland. We're going to show hundreds of people how to build a company, the right way. Talk to customers and write code.
discovery.mdfellows.com
Od kogo naprawdę warto uczyć się biznesu? Porad biznesowych mamy dziś miliony.
Czas przedsiębiorcy jest bardzo ograniczony. Zastosowanie randomowej rady może Cię kosztować lata pracy i miliony złotych.
Dlatego postanowiliśmy zbadać ludzi, którzy udowodnili, że potrafią odnieść sukces więcej niż raz.
Ruszamy z pierwszym w Polsce badaniem tego, jak seryjni przedsiębiorcy podejmują decyzje.
Kryterium wejścia jest wymagające:
- Minimum dwie udane firmy.
- Co najmniej jedna o wartości 100 milionów złotych lub więcej.
Jeden sukces może być szczęściem.
Dwa sukcesy, w różnych warunkach, to już coś, czemu warto przyjrzeć się bliżej.
Analizujemy konkretne decyzje, które podejmowali, i szukamy powtarzalnych wzorców.
Uwierzcie mi, to nie są proste do przeprowadzenia badania :)
Pierwszy raport z tych badań to najlepsza rzecz o biznesie jaką czytałem od lat... a wiecie, że czytam naprawdę dużo.
Wszystkie wyniki udostępnimy publicznie dla zapisanych osób.
100m.the5.org/
Build an Agency That Gets Better With Every Project
tomaszkarwatka.substack.com/…
🤖 Made with AI
Yesterday I led a workshop at the Harvard Club in NYC.
A long way from being a 10-year-old kid selling tomatoes in a 500-person village in Poland.
My biggest lesson after 25 years in business:
Don’t just get better at selling.
Build something that becomes easier to buy.
Blog → demand.
Specialization → demand.
Open source → demand.
Great product → demand.
I’m in NYC until Sunday, Oct 11, looking for Open Mercato’s first serious US agency/software consultancy partners.
If AI is changing how you build enterprise software, DM me.
#NYCEntrepreneurs #HarvardClub
Tomasz Karwatka retweeted
kinda crazy 🤯
let's get to 10k then: github.com/tester-army/e2e
If you’re young and thinking about starting an agency, here’s the playbook I’d use.
I’ve done it twice.
I started my first business with no money, no network, and no impressive CV.
Years later, I built and exited two software agencies (64M, 140M USD valuation, no earnouts).
reddit.com/r/agency/s/Ugw5bt…












