writing-plans

writing-plans is a skill for Claude Code, Codex from yuchenbigpen1/normies. It costs 21 tokens per session (763 once invoked), scanned A, original, Apache-2.0.

Guidance for writing an implementation plan before changing code, when a task has requirements or a specification and several dependent steps.

In plain words
What is it for?
Use it to inspect the current project, split a multi-step build into independent tasks, record technical details, and identify task dependencies.
Why use it?
It helps turn verified requirements and project context into ordered work that can be checked as it progresses.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to inspect the current project, split a multi-step build into independent tasks, record technical details, and identify task dependencies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yuchenbigpen1/normies/writing-plans
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 yuchenbigpen1/normies --skill writing-plans
Clone the repo
git clone --depth 1 https://github.com/yuchenbigpen1/normies

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 writing-plans

README.md
[![agentmods](https://agentmods.dev/badge/skills/yuchenbigpen1/normies/writing-plans/github.svg)](https://agentmods.dev/skills/yuchenbigpen1/normies/writing-plans)
Your own site
<a href="https://agentmods.dev/skills/yuchenbigpen1/normies/writing-plans"><img src="https://agentmods.dev/badge/skills/yuchenbigpen1/normies/writing-plans/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 writing-plans

Your own site · 80×15
<a href="https://agentmods.dev/skills/yuchenbigpen1/normies/writing-plans"><img src="https://agentmods.dev/badge/skills/yuchenbigpen1/normies/writing-plans.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 763 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.
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 $0.00021 $0.00763
Opus 5 $0.00010 $0.00381
Sonnet 5 $0.00004 $0.00153
Haiku 4.5 $0.00002 $0.00076

Measured 11d ago against content hash 075f08f10635, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

writing-plans 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 11d 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.

packages/shared/assets/workspace-template/skills/writing-plans/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Writing Plans

Follow the system prompt's Plan Creation section. It has the full rules for:

  • What the user sees (plain language plan via SubmitPlan)
  • What the implementing agent receives (technical detail via technicalDetail field)
  • How to structure tasks for CreateProjectTasks

Announce at start: "I'm creating an implementation plan for this."

Before writing the plan:

  1. Check out the current project state (files, docs, recent work) so you can write accurate technical detail for the implementing agent
  2. If no research has been done yet, use the research-before-planning skill first. Plans built on unverified assumptions produce bad builds.

Keep tasks independent where possible. Only add dependencies when a task genuinely requires another task's output.

Step Assignment

Tasks are grouped into steps (internally called waves). Each step runs in parallel — all tasks in the same step execute simultaneously. Between steps, a verifier checks the work before advancing.

  • Step 1: Tasks with no dependencies (all start immediately)
  • Step 2: Tasks that ONLY depend on Step 1 tasks
  • Step 3: Tasks that depend on Step 2 (or earlier) tasks
  • And so on...

Algorithm:

  1. Tasks with no dependencies → Step 1
  2. For each remaining task: step = max(step of all dependencies) + 1
  3. Report step grouping in the plan summary

When presenting the plan to the client, show which tasks run in parallel:

"Tasks 1, 2, and 3 have no dependencies — they'll run together in Step 1. Task 4 depends on Tasks 1 and 2, so it starts in Step 2 after the verifier confirms Step 1 is solid."

This helps the client understand the execution timeline and total project duration.

Naming Steps

If you provide steps to CreateProjectTasks, give each step an outcome-focused name that describes what the user gets, not what the code does:

  • "Login system works" not "Implement auth"
  • "Dashboard shows live data" not "Build React components"
  • "Emails send automatically" not "Configure SMTP"

Read the full file on GitHub · 70 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. 11d ago First seen · 70 lines · 21 tokens per session scan A 075f08f10635

Subscribe to this mod's changes

writing-plans is a skill published in the GitHub repository yuchenbigpen1/normies (4 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 21 tokens to every session and 763 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 2026-08-31.