How He Vibe Coded His Way To Y Combinator

Quick Overview

Ismile successfully built and validated his AI property manager, Brickwise, using approximately 2,000 prompts on Lowable in about one month, securing Y Combinator acceptance before heavily investing in traditional engineering, proving that rapid validation through no-code tools is crucial for identifying problems worth solving.

Key Points: Ismile confirms that at the point of submitting the YC application, the company was built entirely on Lowable using around 2,000 prompts, though his co-founder is highly technical. Brickwise functions as an AI property manager, handling tenant communications (phone, WhatsApp, SMS, email) 24/7 and automating maintenance logging and contractor scheduling. The core validation process involved building a sufficiently useful, quickly hacked-together version in about a month and putting it in front of paying customers: "I'd much rather put together something that is sufficiently useful, however quickly hacked together it is." The AI agent demonstrates advanced capabilities, including contacting up to 50 contractors simultaneously for quotes and using context like error codes from photos to guide immediate fixes. The go-to-market strategy relies on two parts: effective LinkedIn cold messaging where one in four cold messages receive a reply, and offering a robust free version on the homepage which generated 24 demo calls from 100 product trials in two weeks. For Lowable usage, Ismile advises talking to the tool in the least technical way possible, sometimes using ChatGPT to refine complex prompts before inputting them into Lowable to save on prompt costs. Post-YC acceptance, the team shifted focus to engineering complex integrations and scaling the foundation initially built via prompting, with Lowable now serving primarily for rapid UI wireframing during customer calls.

Context: The interview features Ismile, the non-technical founder of Brickwise, a startup that gained attention for being built almost entirely using Lowable, a no-code/prompt-based development platform, leading to their acceptance into Y Combinator. Brickwise aims to solve scaling bottlenecks for property management firms (managing 1 to 500 properties) by automating tenant maintenance requests and contractor coordination.