Spec-Driven Development with Agentic Coding Assistants
June 1, 2026 · View on GitHub
This repository contains the companion code for the DeepLearning.AI Spec-Driven Development course. Each video folder holds the complete project state you need to follow along with that video.
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How to use this repo
The simplest way to take this course is to start at Video 5 and follow along with each video, building the project as you go.
Each VideoNN_* folder contains a snapshot of the AgentClinic project as it should look at the start of that video. You don't need to copy these folders each time -- they're here so you can jump into any video without having completed the previous ones. If you want to start fresh at a specific video, just copy that folder into your own working directory:
cp -r Video06_Feature_Specification/ my-agentclinic/
cd my-agentclinic
npm install
Video overview
Each video folder contains the complete starter code for that video and all prompts used throughout it.
| Folder | Video | What you're starting with |
|---|---|---|
| Video05_Creating_the_Constitution | Creating the Constitution | Empty project scaffold (package.json, tsconfig.json, src/index.ts) |
| Video06_Feature_Specification | Feature Specification | Constitution in place (specs/mission.md, tech-stack.md, roadmap.md) |
| Video07_Feature_Implementation | Feature Implementation | Constitution + Phase 1 feature spec (plan.md, requirements.md, validation.md) |
| Video08_Feature_Validation | Feature Validation | Phase 1 "Hello Hono" fully implemented with layout components |
| Video09_Project_Replanning | Project Replanning | Phase 1 merged to main, ready for replanning |
| Video10_The_second_feature_phase | The Second Feature Phase | Replanning complete (testing, responsive design, changelog skill added) |
| Video11_The_MVP | The MVP | Phase 2 "Agents & Ailments" merged, full app ready for MVP sprint |
| Video12_Legacy_support | Legacy Support | MVP fully implemented, ready for legacy SDD introduction |
| Video13_Build_your_own_workflow | Build Your Own Workflow | Rebuilt legacy constitution + Feedback Form feature implemented |
| Video14_Agents_replaceability | Agent Replaceability | Feedback Form merged, feature-spec skill created, next feature spec drafted, backlog/ with research notes |
Videos 2-4 (Why Spec-Driven Development, Workflow Overview, and Setup) are conceptual and do not have starter code.
Other directories
prompts/-- All video prompts in one place. Each file contains the numbered prompts for that video. Copies also live inside eachVideoNN_*/folder asprompts.md.skills/-- Reusable agent skills developed during the course (changelog, feature-spec).example_specs/-- Example specification documents referenced in the course.
Prerequisites
- Node.js (v18+)
- Git
- A coding agent (the course uses Claude Code, but the workflow is agent-agnostic)
- An IDE or editor (the course uses WebStorm)