Lab 089: Spec-Driven Development with Spec Kit¶
Free-first design
Complete the guided exercise with Copilot Free or the included simulation. Paid features are optional and explicitly labeled.
AI Credit impact
Low for guided work; medium/high for agentic or repeated runs. Prefer automatic model selection, plan before acting, keep context focused, and avoid unnecessary parallel sessions.
What You'll Learn¶
- Turn an idea into a testable specification
- Create a plan and dependency-aware task list
- Implement with Copilot without losing traceability
- Converge through tests and evidence
GH-300 alignment¶
Productivity and tests (10–15%). This mapping follows the GH-300 curriculum snapshot dated 2026-08-07. The official outline may retain older product wording such as “Copilot Edits”; this lab teaches the current product experience and calls out that difference.
Concept Map¶
flowchart LR
S[Specify] --> P[Plan]
P --> T[Tasks]
T --> I[Implement]
I --> C{Acceptance criteria pass?}
C -->|No| S
C -->|Yes| D[Converged delivery]
Hands-on Exercise¶
Step 1: Specify¶
Describe the OutdoorGear feature through users, behavior, constraints, non-goals, and measurable acceptance criteria.
Step 2: Plan¶
Ask Spec Kit and Copilot to map architecture, affected files, risks, and validation. Review the plan before allowing edits.
Step 3: Tasks¶
Split work into independently verifiable tasks and record real dependencies. Every task must trace to an acceptance criterion.
Step 4: Implement and converge¶
Execute one task at a time, run the smallest relevant tests, compare the result with the specification, and update artifacts when reality changes.
Supporting kit¶
The site build generates stable PDF and ZIP downloads. The ZIP contains the lab guide and every supporting file declared for this lab.