implementation-planner

by @ngothanhthien in Development

# Install this skill:

npx skills add ngothanhthien/claude-skills --skill "implementation-planner"

Install specific skill from multi-skill repository

# Description

Structured implementation planning for software development tasks. Use when the user provides a spec, feature request, bug report, or any development task that needs to be broken into an actionable plan. Handles (1) Bug fixes - root cause analysis and fix planning, (2) New features - ERD, use cases, and implementation tasks, (3) Feature modifications - current vs target logic with migration plan, (4) Feature extensions - adding capabilities to existing features. Outputs dependency-aware task breakdowns where each file = 1 epic.

# SKILL.md

name: implementation-planner
description: Structured implementation planning for software development tasks. Use when the user provides a spec, feature request, bug report, or any development task that needs to be broken into an actionable plan. Handles (1) Bug fixes - root cause analysis and fix planning, (2) New features - ERD, use cases, and implementation tasks, (3) Feature modifications - current vs target logic with migration plan, (4) Feature extensions - adding capabilities to existing features. Outputs dependency-aware task breakdowns where each file = 1 epic.

Implementation Planner

Transform specs and requirements into structured, dependency-aware implementation plans.

Pipeline

USER REQUEST → Classify → Keywords → Discovery → Synthesis → [Type Flow] → Ready Plan

Phase	Method	Output
1. Classify	Auto-detect + confirm	Type + Scope
2. Keywords	Ask user	Search terms
3. Discovery	Parallel agents + C7	Discovery Report
4. Synthesis	Oracle analysis	Gap Analysis + Approach + Risks
5. Type Flow	See flows below	Validated plan

Task Types

Type	When	Flow Summary
Bug fix	Something broken	Discovery → Root Cause ✓ → Single Task
Modification	Change behavior A → B	Discovery → Current ✓ → Target ✓ → Plan
Extension	Add C to existing A, B	Discovery → Current ✓ → New Logic ✓ → Plan
New feature	Build brand-new capability	Discovery → ERD ✓ → Use Cases ✓ → Plan

Scope: Pure logic (API/function only) | Mixed (includes refactor)

Legend: ✓ = approval checkpoint (never skip)

Workflow

Step 1: Classify

Auto-classify, ask: "I classified this as [type] with [scope] scope. Correct?"

Step 2: Execute Type Flow

See references/flows.md for detailed step-by-step workflows.

Step 3: Discovery Phase

See references/discovery.md for parallel agent launch pattern and report template.

Step 4: Synthesis Phase

See references/synthesis.md for Oracle analysis pattern and output template.

Step 5: Output Plan

See references/templates.md for plan output format.

Output Rules

Each file = 1 epic
Tasks include explicit dependencies: depends_on: [task_id]
Parallel tasks marked: [PARALLEL]
Focus on business logic (pseudocode max, no deep code)
UI work separated with [UI] label

# Supported AI Coding Agents

This skill is compatible with the SKILL.md standard and works with all major AI coding agents:

⚡ Amp 🚀 Antigravity 🤖 Claude Code 🦀 Clawdbot 📝 Codex ▶️ Cursor 🤖 Droid 💎 Gemini CLI 🐙 GitHub Copilot 🪿 Goose 📊 Kilo Code 🔧 Kiro CLI 💻 OpenCode 🦘 Roo Code 🌲 Trae 🏄 Windsurf

Learn more about the SKILL.md standard and how to use these skills with your preferred AI coding agent.