plan

plan is a skill for Claude Code from EliasOulkadi/shokunin. It costs 38 tokens per session (1,767 once invoked), scanned A, original, MIT.

A planning guide for exploring a codebase and producing an implementation plan before code is written.

In plain words
What is it for?
Use it to break down a coding task, investigate related files, assess trade-offs, and document a concrete build plan.
Why use it?
It helps uncover existing patterns, compare technical approaches, and reduce guesswork before implementation begins.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents; mentions OpenCode.

Good fit Use it to break down a coding task, investigate related files, assess trade-offs, and document a concrete build plan.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eliasoulkadi/shokunin/plan
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.

Any agent
npx skills add EliasOulkadi/shokunin --skill plan
Clone the repo
git clone --depth 1 https://github.com/EliasOulkadi/shokunin

Made for: Claude Code.

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 plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/plan/github.svg)](https://agentmods.dev/skills/eliasoulkadi/shokunin/plan)
Your own site
<a href="https://agentmods.dev/skills/eliasoulkadi/shokunin/plan"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/plan/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/eliasoulkadi/shokunin/plan"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,767 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00038 $0.01767
Opus 5 $0.00019 $0.00883
Sonnet 5 $0.00008 $0.00353
Haiku 4.5 $0.00004 $0.00177

Measured 10d ago against content hash 275d54c8aca1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

plan 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 10d 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.

.pack/skills/plan/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Entered plan mode. Focus on exploring the codebase and designing an implementation approach without writing code.

In plan mode:

  1. Thoroughly explore the codebase to understand existing patterns
  2. Identify similar features and architectural approaches
  3. Consider multiple approaches and their trade-offs
  4. Design a concrete implementation strategy
  5. Write the plan and return its path

DO NOT write or edit any files yet (except the plan file). This is a read-only exploration and planning phase.

Workflow

Phase 1: Initial Understanding

Goal: Gain comprehensive understanding of the user's request.

Use only research agents — no other agent types.

  1. Understand the user's request and associated code

  2. Launch research agents in parallel (single message, multiple calls):

    • Use skill: 'research' for all exploration agents
    • Use the cheapest model available
    • 1 agent for isolated tasks with known files
    • Multiple agents for uncertain scope, multiple codebase areas, or pattern discovery
    • Max 3 agents — usually 1 is enough
  3. Use multiple agents when:

    • Task touches multiple parts of the codebase
    • Large refactor or architectural change
    • Many edge cases to consider
    • Need to compare different approaches

Phase 2: Design

Goal: Design an implementation approach based on exploration results.

Launch 1-3 design agents in parallel:

  • Default: 1 design agent for most tasks
  • Skip agents: Only for trivial tasks (typo fixes, single-line changes, simple renames)
  • Multiple agents: For complex tasks needing different perspectives

Example perspectives by task type:

  • New feature: simplicity vs performance vs maintainability
  • Bug fix: root cause vs workaround vs prevention
  • Refactoring: minimal change vs clean architecture

For each agent:

  • Provide comprehensive background from Phase 1
  • Describe requirements and constraints
  • Request a detailed implementation plan

Phase 3: Review

Goal: Review plans and ensure alignment with user's intentions.

  1. Read critical files identified by agents
  2. Verify plans align with the original request
  3. Do NOT call subagents here

Read the full file on GitHub · 176 lines

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. 10d ago First seen · 176 lines · 38 tokens per session scan A 275d54c8aca1

Subscribe to this mod's changes

plan is a skill published in the GitHub repository EliasOulkadi/shokunin (113 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 1,767 once invoked, about $0.0002 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.

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