{"id":8641,"date":"2026-04-12T12:55:46","date_gmt":"2026-04-12T10:55:46","guid":{"rendered":"https:\/\/bicon.li\/?p=8641"},"modified":"2026-06-11T14:52:45","modified_gmt":"2026-06-11T12:52:45","slug":"from-prompt-to-private-banking-app-in-2-hours","status":"publish","type":"post","link":"https:\/\/bicon.li\/en\/2026\/04\/12\/from-prompt-to-private-banking-app-in-2-hours\/","title":{"rendered":"From Prompt to Private Banking App in 2 Hours"},"content":{"rendered":"

In December, I shared an example of a structured private banking prompt.<\/a><\/p>\n\n\n\n

The idea was simple:
Don\u2019t treat advisory as free-form interaction, but as structured logic.<\/p>\n\n\n\n

Define the parameters \u2013 base currency, risk appetite, investment horizon, allocation ranges \u2013 and embed constraints and guardrails.<\/p>\n\n\n\n

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I started with a structured prompt for Private Banking workflows.
A few hours later, it was a working application.<\/p>\n\n\n\n

No classical development cycle.
No backlog. No sprint.<\/p>\n<\/blockquote>\n\n\n\n

From concept to application<\/h3>\n\n\n\n

What started as a small experiment quickly turned into something more structured.<\/p>\n\n\n\n

Using recent experience with vibe coding, the initial prompt was iteratively translated into a working tool \u2013 not through traditional development steps, but through continuous refinement of logic, structure, and output.<\/p>\n\n\n\n

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Instead of writing specifications, you iterate with the system:
define intent, adjust structure, validate output.<\/p>\n<\/blockquote>\n\n\n\n

Testing was fully automated \u2013 with test cases that run after each change and dynamically extend across both logic and UI.<\/p>\n\n\n\n

The complete logic of all checks and rules is automatically and cleanly documented in a .md file.<\/p>\n\n\n\n

What began as a simple idea became a functioning application within hours.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n
Start Landing Page & App \u2192<\/span><\/a><\/div>\n\n\n\n

No classical development cycle \u2013 just a direct translation of domain logic into a working solution.<\/p>\n\n\n\n

What the Application Does<\/h3>\n\n\n\n

The application translates structured investor inputs into a fully defined prompt for portfolio construction.<\/p>\n\n\n\n

It combines domain logic, validation, and implementation rules into a reusable advisory workflow.<\/p>\n\n\n\n

This is not a static template.
It is a rule-based orchestration of inputs, validation, and output.<\/p>\n\n\n\n

Functionality<\/h3>\n\n\n\n