Comment by oldnewthing

Created modfin.lyfbits.com. Wrote it to help me model and determine various types of investment scenarios. Continuing to work on it. Not strictly vibe-coded. I use a brainstorm -> write specs with Gemini (requirements, APIs, user journeys, user experiences etc.) -> ask Claude to implement from Specs -> iterate and refine until it is exactly what I want it to be.

I have found that the initial specs only go so far; as I use, "what's missing" becomes clearer.

Workflow is build -> checkin to git -> build container -> deploy to Cloud Run. I have a number of instructions for Claude for logs, frontend, backend, logging etc. based on my past experience. Note that I am mostly a backend developer (AWS, Azure, GCP); I can't code frontend to save my life and on that front, the agents are helping me realize ideas rapidly.