planning

planning is a skill for Claude Code, Codex from tmcfarlane/oh-my-cursor. It costs 126 tokens per session (694 once invoked), scanned A, original, MIT.

A guide for turning a software idea into a technical implementation plan. It covers research, understanding the existing code, system design, and breaking work into tasks.

In plain words
What is it for?
Use it to plan features, design systems, assess approaches, study a codebase, and create implementation roadmaps.
Why use it?
It helps replace vague requirements with a clear plan and makes technical trade-offs explicit before coding begins.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/tmcfarlane/oh-my-cursor/planning
Any agent
npx skills add tmcfarlane/oh-my-cursor --skill planning
Clone the repo
git clone --depth 1 https://github.com/tmcfarlane/oh-my-cursor

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for planning

README.md
[![agentmods](https://agentmods.dev/badge/skills/tmcfarlane/oh-my-cursor/planning.svg)](https://agentmods.dev/skills/tmcfarlane/oh-my-cursor/planning)
Your own site
<a href="https://agentmods.dev/skills/tmcfarlane/oh-my-cursor/planning"><img src="https://agentmods.dev/badge/skills/tmcfarlane/oh-my-cursor/planning.svg" alt="Measured on agentmods" height="20"></a>
Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 694 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00126 $0.00694
Opus 5 $0.00063 $0.00347
Sonnet 5 $0.00025 $0.00139
Haiku 4.5 $0.00013 $0.00069

Measured 5d ago against content hash 734b2a87e4b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

planning scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/planning/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Planning

Create detailed technical implementation plans through research, codebase analysis, solution design, and comprehensive documentation.

When to Use

Use this skill when:

  • Planning new feature implementations
  • Architecting system designs
  • Evaluating technical approaches
  • Creating implementation roadmaps
  • Breaking down complex requirements
  • Assessing technical trade-offs

Core Responsibilities & Rules

Always honoring YAGNI, KISS, and DRY principles. Be honest, be brutal, straight to the point, and be concise.

1. Research & Analysis

Load: references/research-phase.md Skip if: Provided with researcher reports

2. Codebase Understanding

Load: references/codebase-understanding.md Skip if: Provided with scout reports

3. Solution Design

Load: references/solution-design.md

4. Plan Creation & Organization

Load: references/plan-organization.md

5. Task Breakdown & Output Standards

Load: references/output-standards.md

Workflow Process

  1. Initial Analysis → Read codebase docs, understand context
  2. Research Phase → Spawn researchers, investigate approaches
  3. Synthesis → Analyze reports, identify optimal solution
  4. Design Phase → Create architecture, implementation design
  5. Plan Documentation → Write comprehensive plan
  6. Review & Refine → Ensure completeness, clarity, actionability

Output Requirements

  • DO NOT implement code - only create plans
  • Respond with plan file path and summary
  • Ensure self-contained plans with necessary context
  • Include code snippets/pseudocode when clarifying
  • Provide multiple options with trade-offs when appropriate
  • Fully respect the ./docs/development-rules.md file.

Plan Directory Structure

plans/
└── YYYYMMDD-HHmm-plan-name/
    ├── research/
    │   ├── researcher-XX-report.md
    │   └── ...
    ├── reports/
    │   ├── XX-report.md
    │   └── ...
    ├── scout/
    │   ├── scout-XX-report.md
    │   └── ...
    ├── plan.md
    ├── phase-XX-phase-name-here.md
    └── ...

Read the full file on GitHub · 89 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 89 lines · 126 tokens per session scan A 734b2a87e4b8

Subscribe to this mod's changes

planning is a skill published in the GitHub repository tmcfarlane/oh-my-cursor (108 stars, last pushed 2mo ago), licensed MIT. It adds 126 tokens to every session and 694 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens

insight-error-page

Write or audit an insight-kind error page for the Next.js dev overlay. Use when creating a new errors/ .mdx page, auditing an existing one, or checking that a page matches the framework fix cards. Covers page structure, title alignment, FixCard cards with Copy prompt button, code snippets, terminology verification…

vercel/next.js · 83 tokens