Does this skill modify my source code?

No, the Codex Task Planner is designed to only read the repository for context. It only writes files to its dedicated plans directory to ensure your codebase remains clean.

Does it support Mermaid diagrams?

Yes, the overview plan template encourages the use of text-based diagrams, such as Mermaid, to visualize system flows and architecture.

Can I update existing plans as project requirements change?

Yes, the skill includes built-in workflows to find, read, and update existing plans while preserving metadata and history.

Where are the plan files stored?

Plans are saved in the directory specified by the $CODEX_HOME environment variable, specifically in the /plans subdirectory. If not set, it defaults to ~/.codex/plans.

What types of plans can I create?

You can generate 'Implementation plans' which include actionable checklists and testing steps, or 'Overview plans' for documenting high-level system architecture and data flows.

Codex Task Planner

Name: Codex Task Planner
Author: akiojin

byakiojin

•

Productivity & Workflow

Generates and manages structured implementation plans and system overviews for complex coding tasks.

Codex Task Planner is a specialized skill designed to streamline the software development lifecycle by creating structured, markdown-based plans. It helps developers clarify intent, scope, and requirements before writing code, offering templates for both implementation-focused action items and high-level system overviews. The skill manages a dedicated plans directory outside of your source code, allowing you to discover, read, and update planning documents without cluttering your repository, ensuring a clean separation between strategy and implementation.

Key Features

01Dedicated plans directory management ($CODEX_HOME/plans)

02Supports both implementation checklists and architectural overviews

031 GitHub stars

04Automated plan generation with structured markdown templates

05Intelligent context scanning of READMEs and project documentation

06Full CRUD operations for plan files with YAML frontmatter management

Use Cases

01Managing a persistent backlog of technical debt remediation plans

02Creating a high-level architectural overview of an existing codebase for onboarding

03Drafting a step-by-step implementation guide for a complex new feature

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add akiojin/llm-router .system

For use in Claude.ai and ChatGPT

Download Skill