[Planning] Use when you need to start a new project from scratch with full waterfall inception — idea, research, domain modeling, tech stack, and implementation plan.
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[Planning] Use when you need to start a new project from scratch with full waterfall inception — idea, research, domain modeling, tech stack, and implementation plan.
Quick Summary
Goal: Guide greenfield project inception from raw idea to an approved, implementable project plan using a full waterfall process.
Workflow (16 steps):
Discovery (/idea) — Interview user about problem, vision, constraints, team skills, scale. DO NOT ask about tech stack — keep business-focused.
Market Research (/web-research) — WebSearch for competitors, market landscape, existing solutions
Deep Research (/deep-research) — WebFetch top sources, extract key findings
Business Evaluation (/business-evaluation) — Viability assessment, risk matrix, value proposition
Domain Analysis & ERD (/domain-analysis) — Bounded contexts, aggregates, entities, ERD diagram, domain events. Validate every context boundary with user.
Tech Stack Research (/tech-stack-research) — Derive technical requirements from business + domain analysis. Research top 3 options per stack layer (backend, frontend, database, messaging, infra). Detailed pros/cons matrix, team-fit scoring, market analysis. Present comparison report for user to decide.
Architecture Design (/architecture-design) — Research and compare top 3 architecture styles (Clean, Hexagonal, Vertical Slice, etc.). Evaluate design patterns (CQRS, Repository, Mediator). Audit against SOLID, DRY, KISS, YAGNI. Validate scalability, maintainability, IoC, technical agnosticism. Present comparison with recommendation. produce a "Scaffold Handoff — Harness Plan" table in the architecture report: (a) feedforward guides to create (AGENTS.md sections, skill activation rules, pattern catalog), (b) computational feedback sensors to install (linter, formatter, pre-commit, CI), (c) inferential feedback sensors to configure (review skills, AI gates). This table feeds → → .
Harness output required:
/scaffold
/linter-setup
/harness-setup
Implementation Plan (/plan) — Create phased plan using confirmed tech stack + architecture + domain model
Security Audit (/security-review) — Review plan for OWASP Top 10, auth patterns, data protection concerns
Performance Audit (/performance-review) — Review plan for performance bottlenecks, scalability, query optimization
Plan Review (/plan-review) — Full plan review, risk assessment, approval
Refine to PBI (/refine) — Transform idea + reviewed plan into actionable PBI with acceptance criteria
User Stories (/story) — Break PBI into implementable user stories
Plan Validation (/plan-validate) — Interview user with critical questions to validate plan + stories
Test Strategy (/spec [mode=tests]) — Test pyramid, frameworks, spec outline
Workflow End (/workflow-end) — Clean up, announce completion
Key Rules:
PLANNING ONLY: never implement code
Every stage saves artifacts to plan directory
MANDATORY IMPORTANT MUST ATTENTION every stage requires AskUserQuestion validation before proceeding
Delegate architecture decisions to solution-architect agent
Present 2-4 options for every major decision with confidence %
Business-First Protocol: Tech stack is NEVER asked upfront. Business analysis (steps 1-5) + domain modeling (step 6) must complete first. Tech stack is derived from requirements through research and presented as a comparison report with options.
MANDATORY IMPORTANT MUST ATTENTION architecture design MUST produce a "Scaffold Handoff — Harness Plan" table covering: feedforward guides, computational sensors (/linter-setup handles install), and inferential sensors (/harness-setup configures). The scaffold + linter-setup + harness-setup triad are NON-SKIPPABLE infrastructure — code without a harness accumulates technical debt from day one.
Entry Point
This skill is the explicit entry point for the workflow-greenfield-init workflow.
When invoked:
Activate the workflow-greenfield-init workflow via /start-workflow workflow-greenfield-init
The workflow handles step sequencing, task creation, and progress tracking
Each step delegates to the appropriate skill (idea, web-research, domain-analysis, tech-stack-research, etc.)
The solution-architect agent provides architecture guidance throughout
When to Use
Starting a brand-new project from scratch
No existing codebase (empty project directory)
Planning a new application before writing any code
Want structured waterfall inception with user collaboration at every step
When NOT to Use
Existing codebase with code (use /plan or /start-workflow workflow-feature instead)
After completion, recommend next step: /feature-implement to scaffold the project structure.
Be skeptical. Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence percentages (Idea should be more than 80%).
MANDATORY IMPORTANT MUST ATTENTION break work into small todo tasks — one per workflow step.
MANDATORY IMPORTANT MUST ATTENTION validate with user at EVERY step — never auto-decide.
MANDATORY IMPORTANT MUST ATTENTION add a final review todo task to verify work quality and identify fixes/enhancements.
MANDATORY IMPORTANT MUST ATTENTION use TaskCreate to break ALL work into small tasks BEFORE starting.
MANDATORY IMPORTANT MUST ATTENTION use AskUserQuestion at EVERY stage — validate decisions before proceeding.
MANDATORY IMPORTANT MUST ATTENTION NEVER ask tech stack upfront — business analysis and domain modeling first.
AI Mistake Prevention — Failure modes to avoid on every task:
Re-read files after context changes. Context compaction, resume, or long-running work can make memory stale; verify current files before acting.
Verify generated content against source evidence. AI hallucinates APIs, names, claims, and document facts. Check the relevant source before documenting or referencing.
Check downstream references before deleting or renaming. Removing an artifact can stale docs, generated mirrors, configs, and callers; map references first.
Trace the full impact chain after edits. Changing a definition can miss derived outputs and consumers. Follow the affected chain before declaring done.
Verify ALL affected outputs, not just the first. One green check is not all green checks; validate every output surface the change can affect.
Assume existing values are intentional — ask WHY before changing. Before changing a constant, limit, flag, wording, or pattern, read nearby context and history.
Surface ambiguity before acting — don't pick silently. Multiple valid interpretations require an explicit question or stated assumption with risk.
Keep shared guidance role-relevant. Universal guidance must help every receiving skill or agent; code-specific obligations belong only in code-specific protocols.
Critical Thinking Mindset — Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence >80% to act.
Anti-hallucination: Never present guess as fact — cite sources for every claim, admit uncertainty freely, self-check output for errors, cross-reference independently, stay skeptical of own confidence — certainty without evidence root of all hallucination.
MUST ATTENTION apply critical + sequential thinking — every claim needs appropriate traced evidence (file:line for repo/code claims; source URL or artifact section for research, product, content, and docs claims); confidence >80% to act, <60% DO NOT recommend. Anti-hallucination: never present guess as fact, admit uncertainty freely, cross-reference independently, stay skeptical of own confidence.
MUST ATTENTION apply AI mistake prevention — verify generated content against evidence, trace downstream references before deleting or renaming, verify all affected outputs, re-read files after context loss, and surface ambiguity before acting.
Closing Reminders
IMPORTANT MUST ATTENTION Protocols in force (concise digest of the SYNC/shared blocks this skill carries):
AI Mistake Prevention: verify generated content against evidence, trace downstream references, verify all affected outputs, re-read after context loss, surface ambiguity.
Critical Thinking: traced file:line proof per claim, confidence >80% to act, NEVER guess.
MANDATORY IMPORTANT MUST ATTENTION break work into small todo tasks using TaskCreate BEFORE starting
MANDATORY IMPORTANT MUST ATTENTION search codebase for 3+ similar patterns before creating new code
MANDATORY IMPORTANT MUST ATTENTION cite file:line evidence for every claim (confidence >80% to act)
MANDATORY IMPORTANT MUST ATTENTION add a final review todo task to verify work quality
[TASK-PLANNING] Before acting, analyze task scope and systematically break it into small todo tasks and sub-tasks using TaskCreate.
