writing-plans

writing-plans is a skill for Claude Code from Aimeerrhythm/enterprise-change-workflow. It costs 31 tokens per session (2,312 once invoked), scanned A, original, MIT.

A guide for planning software work that involves several steps before code is changed. It explains the files, tests, checks, and small tasks needed, assuming the developer is new to the project.

In plain words
What is it for?
Use it to turn a specification or list of requirements into a detailed implementation plan, including testing, verification, and possible rollback steps.
Why use it?
It reduces the risk of starting a large change without understanding the codebase or how to check that the result works. TDD means writing tests to describe expected behavior before implementing it.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents; names the ExitPlanMode tool; mentions Claude Code.

Part of the ecw plugin — 15 skills, 3 commands, 7 agents shipped together

Good fit Use it to turn a specification or list of requirements into a detailed implementation plan, including testing, verification, and possible rollback steps.

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

Made for: Claude Code.

Or install ecw, the plugin that ships this one along with the rest of its 15 skills, 3 commands, 7 agents.

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/aimeerrhythm/enterprise-change-workflow/writing-plans/github.svg)](https://agentmods.dev/skills/aimeerrhythm/enterprise-change-workflow/writing-plans)
Your own site
<a href="https://agentmods.dev/skills/aimeerrhythm/enterprise-change-workflow/writing-plans"><img src="https://agentmods.dev/badge/skills/aimeerrhythm/enterprise-change-workflow/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/aimeerrhythm/enterprise-change-workflow/writing-plans"><img src="https://agentmods.dev/badge/skills/aimeerrhythm/enterprise-change-workflow/writing-plans.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,312 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 $0.00031 $0.02312
Opus 5 $0.00015 $0.01156
Sonnet 5 $0.00006 $0.00462
Haiku 4.5 $0.00003 $0.00231

Measured 10d ago against content hash a40c7958ea1d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 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.

skills/writing-plans/SKILL.md · 162 lines

How it starts

The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Writing Plans

Overview

Write comprehensive implementation plans assuming the engineer has zero context for the codebase. Document everything: which files to touch, code, testing, how to verify. Give bite-sized tasks. DRY. YAGNI. TDD. Frequent commits.

Assume the engineer is skilled but knows almost nothing about the project's toolset or problem domain.

Announce at start: "Using ecw:writing-plans to create the implementation plan."

Plan Mode — Do Not Use

Do NOT call EnterPlanMode or ExitPlanMode. This skill writes plans directly to .claude/plans/ via the Write tool. Claude Code's built-in plan mode is a separate mechanism not used by ECW. After writing the plan file, use AskUserQuestion to confirm with the user.

Risk-Aware Detail Level

Read .claude/ecw/session-data/{workflow-id}/session-state.json for risk level and affected domains. If unavailable (standalone invocation), default to P0 (full detail mode).

Risk Level Plan Detail Task Granularity
P0 Full steps with test code + verification commands + rollback notes 2-5 min per step, no merging
P1 Full steps with test code + verification commands 2-5 min per step, no merging
P2 Simplified steps, can merge single-file + no-branch-logic tasks 5-10 min per step
P3 Minimal outline (typically no formal plan needed)

Task merging rule (P2 only): See workflow-routes.yml impl_strategy section.

Domain Context Injection

Note: When Subagent Dispatch is active (≥ 2 domains or ≥ 3 knowledge files), these steps are executed inside the subagent, not by the coordinator. The coordinator only passes file paths.

Before writing the plan:

  1. Read .claude/ecw/routing/path-mappings.md to understand code path → domain mappings
  2. For each affected domain, read its business-rules.md to understand constraints (state machines, validation rules, concurrency controls)
  3. If knowledge-summary.md exists (from domain-collab), read it for cross-domain dependency context

Read the full file on GitHub · 162 lines

Files

What ships with it

3 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. 10d ago First seen · 162 lines · 31 tokens per session scan A a40c7958ea1d

Subscribe to this mod's changes

writing-plans is a skill published in the GitHub repository Aimeerrhythm/enterprise-change-workflow (1 stars, last pushed 3mo ago), licensed MIT. It adds 31 tokens to every session and 2,312 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 2026-08-31.

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