If you’ve ever “vibe coded” (ship fast with AI, then patch until it runs), you’ve likely hit the same wall: lack of structure. As the project grows, nobody is fully sure:
- What was the original intent?
- Which constraints are non-negotiable?
- What’s done, what’s missing?
- What needs to be tested?
Kiro positions itself clearly: “Bring engineering rigor to agentic development”—adding engineering discipline to agentic coding. Its core idea is spec-driven development: turning conversations into specs you can actually execute and validate.
Sources: Kiro homepage and the docs on specs.
1) A key shift: a prompt is not a requirement
Prompts are often vague:
“Make /project look better and filtering faster.”
Requirements must be verifiable:
- When selecting tag A, only projects with tag A are shown.
- Pagination resets to page 1 when filters change.
- Do not re-fetch data when only changing pages.
Kiro tries to pull you out of “hope-driven development” by transforming prompts into requirements and acceptance criteria, then bridging into design and tasks.
2) EARS requirements: small, but powerful
Kiro uses EARS notation to force clarity.
Examples (illustrative):
- When user selects a tag, the system shall update the visible list within 200ms.
- If there are no matches, the system shall show an empty-state message.
You don’t have to be “perfect EARS,” but this style helps both humans and agents align on what “done” means.
3) Architecture before code
Kiro describes a flow like:
- Prompt → requirements/acceptance criteria
- Requirements → architecture/design
- Design → task plan (sequenced by dependencies)
The goal is to replace “code to understand” with “understand to code.” For larger systems, this ordering usually accelerates delivery over the long run.
4) A task plan is the rail system
A good task plan usually includes:
- Clear scope (which files/modules)
- Dependencies (what must be done first)
- Validation (how you know it’s correct)
Kiro calls this “discrete tasks that map to requirements” in the docs on task execution.
5) A lightweight way to apply this today
If you want the spec-driven benefits (even without Kiro), try this minimal loop:
- Write 5–10 bullet requirements using “shall/must”
- Write 3 pass/fail acceptance criteria
- Create a dependency-ordered task list (UI → data → tests)
- Implement tasks and validate against the acceptance criteria
Closing
Kiro isn’t just “a faster code generator.” It’s a way of working where intent becomes a spec first, and code is the implementation of that spec. If you’re scaling from a small portfolio project to something real, it’s a mindset worth trying.