Replit Agent builds Calendar Autobot

Will Cheung built Calendar Autobot, a service that turns text, images and forwarded messages into calendar events. Replit Agent wrote most of the code, while Cheung reviewed and sometimes debugged it. His stack included Python, Flask and PostgreSQL with Google authentication and mail integration.

The agent scaffolded the application from a brief, generated database-migration scripts and helped refactor an oversized routes file. Cheung deliberately added logging early. He reports that Replit then identified some errors by parsing those logs without needing him to point out the exact fault.

Other integrations required more intervention. Google OAuth generated inefficient code and repeated API calls. Cheung supplied official documentation and precise instructions before the flow worked as expected. When the agent kept circling an error, he read logs and helped narrow the problem himself.

The article's three-hour framing also needs qualification. Email support took additional work beyond that goal. Cheung describes a deployed result, but warns about production logging and database control and recommends reviewing major changes before automatic publication. This is a reported application build with useful autonomous debugging, alongside a substantial human role in integration correctness and deployment decisions.

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Source: dev.to · Will Cheung