Agentic SDLC and Spec-Driven Development

Kiro-style Spec-Driven Development on an agentic SDLC

Project Context

Paths

• Steering: .kiro/steering/
• Specs: .kiro/specs/

Steering vs Specification

Steering (.kiro/steering/) - Guide AI with project-wide rules and context Specs (.kiro/specs/) - Formalize development process for individual features

Active Specifications

• Check .kiro/specs/ for active specifications
• Use /kiro-spec-status [feature-name] to check progress

Development Guidelines

• Think in English, generate responses in Japanese. All Markdown content written to project files (e.g., requirements.md, design.md, tasks.md, research.md, validation reports) MUST be written in the target language configured for this specification (see spec.json.language).

Minimal Workflow

• Phase 0 (optional): /kiro-steering, /kiro-steering-custom
• Discovery: /kiro-discovery "idea" — determines action path, writes brief.md + roadmap.md for multi-spec projects
• Phase 1 (Specification):
  • Single spec: /kiro-spec-quick {feature} [--auto] or step by step:
    • /kiro-spec-init "description"
    • /kiro-spec-requirements {feature}
    • /kiro-validate-gap {feature} (optional: for existing codebase)
    • /kiro-spec-design {feature} [-y]
    • /kiro-validate-design {feature} (optional: design review)
    • /kiro-spec-tasks {feature} [-y]
  • Multi-spec: /kiro-spec-batch — creates all specs from roadmap.md in parallel by dependency wave
• Phase 2 (Implementation): /kiro-impl {feature} [tasks]
  • Without task numbers: autonomous mode (subagent per task + independent review + final validation)
  • With task numbers: manual mode (selected tasks in main context, still reviewer-gated before completion)
  • /kiro-validate-impl {feature} (standalone re-validation)
• Progress check: /kiro-spec-status {feature} (use anytime)

Skills Structure

Skills are located in .claude/skills/kiro-*/SKILL.md

• Each skill is a directory with a SKILL.md file
• Skills run inline with access to conversation context
• Skills may delegate parallel research to subagents for efficiency
• Additional files (templates, examples) can be added to skill directories
• kiro-review — task-local adversarial review protocol used by reviewer subagents
• kiro-debug — root-cause-first debug protocol used by debugger subagents
• kiro-verify-completion — fresh-evidence gate before success or completion claims
• If there is even a 1% chance a skill applies to the current task, invoke it. Do not skip skills because the task seems simple.

Development Rules

• 3-phase approval workflow: Requirements → Design → Tasks → Implementation
• Human review required each phase; use -y only for intentional fast-track
• Keep steering current and verify alignment with /kiro-spec-status
• Follow the user's instructions precisely, and within that scope act autonomously: gather the necessary context and complete the requested work end-to-end in this run, asking questions only when essential information is missing or the instructions are critically ambiguous.

Steering Configuration

• Load entire .kiro/steering/ as project memory
• Default files: product.md, tech.md, structure.md
• Custom files are supported (managed via /kiro-steering-custom)