One developer.
Five live products.
Zero handoffs.

Problem

A prompt's quality is invisible until the model's answer already reflects it — by then a request has been spent. It isn't obvious in advance which of the things a good prompt needs (a clear goal, context, constraints, structure, an output format, a way to check the result) was actually missing.

Decision

Score locally, by default. Instead of routing every prompt through an API to grade it, the core scoring path is a deterministic, dependency-free function. It reads for verbs, headings, lists, constraint language and verification phrasing, and produces the same score for the same prompt every time, for free, with nothing sent anywhere. A separate BYOK mode exists for a model-assisted rewrite, and only that mode touches the network — using a key the visitor supplies that never leaves the browser.

Implementation

The module has zero runtime imports (one import is types-only and fully erasable), no React coupling, no browser APIs and no network calls — it's a pure function over a string. That portability turned out to matter beyond the product itself: this portfolio's hero runs the same scoring path client-side, extracted and pinned against fixture output, to demonstrate the product instead of describing it.

Result

Two prompts asking for the same thing score very differently under the seven categories — a loosely specified request scores 29/100 with six issues flagged, while a structured version of the same request scores 89/100 with none. The gap is the argument, made in one comparison.

Problem

Islamic inheritance law (Faraid) isn't one fixed formula — the shares owed to each heir differ across the four Sunni madhabs, and a family settling an estate needs a breakdown they and their solicitor can actually check, not just a number to trust.

Decision

Every heir's share carries its Quranic reference, not just a number. That's the product decision that matters here: a number without its source isn't verifiable, and this is a domain where being checkable counts for more than being fast.

Implementation

The calculator supports all four Sunni madhabs as genuinely different rule sets rather than one ruleset with a variable applied, and produces an optional solicitor-ready instruction letter as a PDF — an artifact a family can actually hand to a solicitor, not just a result on screen.

Result

A free, Sharia-compliant Faraid calculator where every heir's share carries its Quranic reference, and exports a document a solicitor can act on.