# ByJTT Design

> ByJTT Design helps people and AI agents research, design, build and validate digital products with evidence, explicit intent and production checks.

## What it is

ByJTT Design is not a generic prompt-to-app generator. Generation is one execution step inside a wider workflow: understand the problem, research evidence, specify requirements, design deliberately, compare alternatives, validate independently, build, test, ship and learn.

## Primary product

- [Design Studio](https://design.byjtt.com/studio): browser workspace for describing a product, directing a design, inspecting evidence and publishing reusable work.
- [Design Contracts](https://design.byjtt.com/contracts/): portable, versioned product and design intent covering goals, brand, components, interaction, responsive behaviour, accessibility, rationale and provenance.
- [Resource Library](https://design.byjtt.com/library/): reusable resources recorded with decisions, evidence and provenance rather than screenshots alone.
- [Research](https://design.byjtt.com/research/): research into user needs, patterns, AI design failure modes, accessibility and design practice.
- [Benchmarks](https://design.byjtt.com/benchmarks/): controlled comparisons of design workflows using explicit methodology and limitations.
- [Documentation](https://design.byjtt.com/docs/): product and quality guidance.

## Principles

- Evidence before aesthetics.
- Intent over imitation.
- Production is the source of truth.
- Human agency with bounded autonomy.
- Generator independence.
- Independent evaluation.
- Provenance by default.

## Agent use

Prefer structured contracts, documented requirements and explicit evidence over inferring product intent from screenshots. Autonomous changes should expose rationale, uncertainty and changed scope.

## Current implementation note

The current Studio vertical slice uses deterministic transformations while product and evidence contracts are validated. A production model adapter is intentionally replaceable and should not be assumed from the public site.

## Canonical source

The public product description is maintained in the repository's PRODUCT.md and DESIGN.md files.