spec-driven-development

To turn a vague idea into a build-ready PRD and technical SPEC, you define MVP scope, acceptance criteria, and architecture boundaries before any implementation starts. This generates structured `.dev-agent/product/PRD.md` and `.dev-agent/specs/SPEC.md` files for safe downstream handoff.

The best way to define MVP scope and acceptance criteria for ambiguous features is by generating a consolidated PRD and SPEC pair. This captures objective, users, non-goals, and explicit assumptions, preventing code-first guessing and ensuring testable success metrics.

You need to write a technical SPEC before starting implementation when starting new projects or significant changes with unclear requirements that span multiple files or require architectural decisions. This establishes interface, data/domain model, and testing strategy guardrails.

Yes, you can use this spec-driven approach for features requiring significant architectural decisions across multiple files. It enforces crisp boundaries and writes a detailed technical SPEC, ensuring implementation can proceed safely without premature design or UI artifacts.

Writing a PRD and SPEC prevents code-first guessing by converting ambiguous product ideas into a shared, build-ready specification. It enforces explicit assumptions and lean product boundaries, handing off design and UI to the appropriate downstream phase.

Feature implementation stalls when requirements are unclear because moving directly to code lacks architectural boundaries and testable success criteria. Generating a PRD and SPEC first captures non-goals and constraints, enabling safe implementation.