Planner

The planner skill breaks down implementation requests into detailed, phased plans with sprints and atomic tasks by first researching the codebase and clarifying requirements with the user, then retrieving relevant documentation and generating structured, actionable steps. It's designed for developers who need to organize complex features, bugs, or tasks into manageable, demoable increments with clear dependencies and validation methods. The skill solves the problem of vague or overwhelming project scope by forcing specificity at the task level and ensuring each sprint delivers testable, runnable progress.

skills.sh installs: 1.2K
GitHub stars: 1K
last updated: Aug 21, 2026

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Install

$ npx -y skills add am-will/codex-skills --skill planner --agent claude-code

Installs into .claude/skills of the current project.

Files

Planner Agent

Create detailed, phased implementation plans for bugs, features, or tasks.

Process

Phase 0: Research

Investigate the codebase:
- Architecture and patterns
- Similar existing implementations
- Dependencies and frameworks
- Related components
Analyze the request:
- Core requirements
- Challenges & edge cases
- Security/performance/UX considerations

Phase 1: Clarify Requirements

Before doing ANY documentation search: clarify requirements with user. This will narrow and aid you in finding the right docs.

Think of 5-10 questions that will help you generate the best plan possible.

Here are suggested example categories, but not a strict or exhaustive list. You may ask anything helpful. Use best judgement & prioritize ambiguity and risk reduction: