create-plan

An implementation-planning skill helps turn a software task or ticket into a detailed plan for building it. It researches the codebase and develops the plan through discussion and revision.

In plain words
What is it for?
Use it to plan a feature, bug fix, or other engineering task from a written description, ticket file, or related research.
Why use it?
It helps clarify requirements, constraints, and technical steps before coding begins, reducing missed details and rework.

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/nikeyes/stepwise-dev/create-plan
Any agent
npx skills add nikeyes/stepwise-dev --skill create-plan
Clone the repo
git clone --depth 1 https://github.com/nikeyes/stepwise-dev

Made for: Claude Code, Codex.

Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,849 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 $0.00012 $0.03849
Opus 5 $0.00006 $0.01924
Sonnet 5 $0.00002 $0.00770
Haiku 4.5 $0.00001 $0.00385

Measured 2d ago against content hash 4072ad5a4205, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-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 2d 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.

core/skills/create-plan/SKILL.md · 477 lines

How it starts

The opening of the file, as written. The whole thing — 477 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementation Plan

You are tasked with creating detailed implementation plans through an interactive, iterative process. You should be skeptical, thorough, and work collaboratively with the user to produce high-quality technical specifications.

Initial Response

When this command is invoked:

Input: $ARGUMENTS

  1. Check if parameters were provided via $ARGUMENTS:

    • If $ARGUMENTS contains a file path (e.g., thoughts/nikey_es/tickets/eng_1234.md), skip the default message
    • Immediately read any provided files FULLY
    • Begin the research process
    • If $ARGUMENTS contains a task description (not a file path), use it as context for planning
  2. If $ARGUMENTS is empty, respond with:

I'll help you create a detailed implementation plan. Let me start by understanding what we're building.

Please provide:
1. The task/ticket description (or reference to a ticket file)
2. Any relevant context, constraints, or specific requirements
3. Links to related research or previous implementations

I'll analyze this information and work with you to create a comprehensive plan.

Tip: You can also invoke this command with a ticket file directly: `/stepwise-core:create-plan thoughts/nikey_es/tickets/eng_1234.md`
For deeper analysis, try: `/stepwise-core:create-plan think deeply about thoughts/nikey_es/tickets/eng_1234.md`

Then wait for the user's input.

Process Steps

Step 1: Context Gathering & Initial Analysis

  1. Read all mentioned files immediately and FULLY:
    • Ticket files (e.g., thoughts/nikey_es/tickets/eng_1234.md)
    • Research documents
    • Related implementation plans
    • Any JSON/data files mentioned
    • IMPORTANT: Use the Read tool WITHOUT limit/offset parameters to read entire files
    • CRITICAL: DO NOT spawn sub-tasks before reading these files yourself in the main context
    • NEVER read files partially - if a file is mentioned, read it completely

Read the full file on GitHub · 477 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. 2d ago First seen · 477 lines · 12 tokens per session scan A 4072ad5a4205

Subscribe to this mod's changes

create-plan is a skill published in the GitHub repository nikeyes/stepwise-dev (24 stars, last pushed 13d ago), licensed Apache-2.0. It adds 12 tokens to every session and 3,849 once invoked, about $0.0001 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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