Using Spec Driven Development with AWS Kiro to add the last updated date on Eleventy blog

After writing a couple of prompts to get a feature done with an LLM or a coding Agent like Claude Code (or Cursor), have you felt like there should be a more declarative way of doing this than taking turns with prompts? Instead of throwing prompts at a coding Agent, herding it/them to do the right job, and getting frustrated, wouldn’t it be better to have a plan of tasks to follow? This is where Spec Driven development comes into the picture, and how AWS Kiro IDE can be used to add a new feature without prompting too many times, so the LLM doesn't stray from the main task. In this post, you will see a practical example of how to use Spec-driven development with AWS Kiro to add the last updated date to this Eleventy blog. Let’s get started! Table of contents # Prerequisites Spec-driven development AWS Kiro IDE Adding updated at to an Eleventy blog Open the blog in Kiro Prompt Kiro for the new feature Kiro create the required docs and tasks Ask Kiro to implement tasks The feature worked…