implementation-plan

implementation-plan is a skill for Claude Code, Codex from pjwang2022/Monstrare. It costs 38 tokens per session (75 once invoked), scanned A, original, MIT.

A planning tool that turns an approved software specification into architecture notes and small task cards for an AI coding assistant. Each task includes limits and checks for confirming the result.

In plain words
What is it for?
Use it to break approved plans into implementable tasks, describe the intended structure, and define how each task should be verified.
Why use it?
It gives coding agents clearer, bounded work instead of asking them to interpret a large specification all at once.

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/pjwang2022/monstrare/implementation-plan
Any agent
npx skills add pjwang2022/Monstrare --skill implementation-plan
Clone the repo
git clone --depth 1 https://github.com/pjwang2022/Monstrare

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 implementation-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/pjwang2022/monstrare/implementation-plan.svg)](https://agentmods.dev/skills/pjwang2022/monstrare/implementation-plan)
Your own site
<a href="https://agentmods.dev/skills/pjwang2022/monstrare/implementation-plan"><img src="https://agentmods.dev/badge/skills/pjwang2022/monstrare/implementation-plan.svg" alt="Measured on agentmods" 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 75 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 $0.00038 $0.00075
Opus 5 $0.00019 $0.00037
Sonnet 5 $0.00008 $0.00015
Haiku 4.5 $0.00004 $0.00007

Measured 5d ago against content hash dc5427b09650, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

implementation-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 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.

.claude/skills/implementation-plan/SKILL.md · 7 lines

What it actually says

請閱讀並遵循 ai/skills/implementation-plan.md(此為 Claude Code 與 Codex 共用的正本內容)。

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 · 7 lines · 38 tokens per session scan A dc5427b09650

Subscribe to this mod's changes

implementation-plan is a skill published in the GitHub repository pjwang2022/Monstrare (84 stars, last pushed 2mo ago), licensed MIT. It adds 38 tokens to every session and 75 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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