Transform Your Business Domain Into a Production-Ready Application in Hours, Not Months

The prompt — copy it as it is

Replace only the description. Everything else tells the model where the specification lives and what it must do before it answers you.

Read https://appwithai.org/llms-full.txt in full, and follow section 1 — the authoring protocol — exactly.

My business:
[Describe it here. What you sell or service. Every kind of record you keep and how they relate. Who does what. The states each record moves through. What has to be approved, and by whom. What happens when a step fails.]

Deliver exactly one file I can download: <business-name>.mmd. It must open on a %% line with %%meta name: before the first diagram, and every line in it must be Mermaid or an EML %% directive — no Markdown, no headings, no prose. A document that describes the model is not the model; the checker scores that EML004.

Send no other file — no specification document, no report, no README. If you can only answer with a document, put the entire model in the first fenced mermaid block of that document, before any prose.

Then, in your reply text: the enhanced specification you inferred, the checker result with its counts, and anything you assumed.

Copy the prompt

Then bring the file back

Upload the .mmd and press Generate, then Run. The first time PostgreSQL loads it takes a few seconds; after that it is instant.

Got a report instead of a file? Some models can only answer with a document. Copy its mermaid block into the checker page, check it, and download it as a .mmd from there.

Not ready to write your own? Run the seventeen-entity CRM the guide builds — same page, one click, no file needed.

Want the longer version — what the model file actually contains, and how to check it? The Try It Yourself page walks all of it.

Building professional or enterprise software rather than a first model? Point the same prompt at the detailed specification and follow its section 10 — a phased walkthrough with approval gates instead of one pass. The prompt for it is here.

Whichever prompt you use, you get a Mermaid file back — and Mermaid draws only its entity diagram. The model viewer draws the rest: the business rules, the state machines, the multi-step processes and who can see what.