A working CRM doesn’t need Salesforce. We built a focused contacts-and-deals
tracker with reminders and a shared inbox view, and put it on a real domain the
same afternoon.
Scope first
The trick is ruthless scope: contacts, deals, follow-ups. No more. We show the
exact prompts and the schema the model landed on.
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Marcus has shipped 40+ production apps with AI tooling and runs the Build Lab experiments — the timed, reproducible head-to-heads behind every Compare and Lab note. Previously built developer platforms at two YC startups.