command-pattern-implementor

command-pattern-implementor is a skill for Claude Code, Codex from bookforge-ai/bookforge-skills. It costs 99 tokens per session (5,558 once invoked), scanned A, original, CC-BY-SA-4.0.

An implementation guide for the Command pattern, which represents an action as an object containing the details needed to perform it. This separates the part that requests an action from the part that carries it out.

In plain words
What is it for?
Use it for undo and redo, queued or scheduled operations, macro recording, operation logs, and user-interface actions.
Why use it?
It makes actions easier to queue, record, repeat, schedule, or reverse. It also avoids tying interface controls directly to the code that performs the work.

Skill for Claude CodeCodex

Part of the design-patterns-gof plugin — 15 skills shipped together

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/bookforge-ai/bookforge-skills/command-pattern-implementor
Any agent
npx skills add bookforge-ai/bookforge-skills --skill command-pattern-implementor
Clone the repo
git clone --depth 1 https://github.com/bookforge-ai/bookforge-skills

Made for: Claude Code, Codex.

Or install design-patterns-gof, the plugin that ships this one along with the rest of its 15 skills.

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 command-pattern-implementor

README.md
[![agentmods](https://agentmods.dev/badge/skills/bookforge-ai/bookforge-skills/command-pattern-implementor.svg)](https://agentmods.dev/skills/bookforge-ai/bookforge-skills/command-pattern-implementor)
Your own site
<a href="https://agentmods.dev/skills/bookforge-ai/bookforge-skills/command-pattern-implementor"><img src="https://agentmods.dev/badge/skills/bookforge-ai/bookforge-skills/command-pattern-implementor.svg" alt="Measured on agentmods" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,558 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00099 $0.05558
Opus 5 $0.00049 $0.02779
Sonnet 5 $0.00020 $0.01112
Haiku 4.5 $0.00010 $0.00556

Measured 4d ago against content hash 0001d2808653, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

command-pattern-implementor 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 4d 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.

books/design-patterns-gof/skills/command-pattern-implementor/SKILL.md · 456 lines

The source is not reproduced here

Licensed CC-BY-SA-4.0

The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file 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. 4d ago First seen · 456 lines · 99 tokens per session scan A 0001d2808653

Subscribe to this mod's changes

command-pattern-implementor is a skill published in the GitHub repository bookforge-ai/bookforge-skills (35 stars, last pushed 4mo ago), licensed CC-BY-SA-4.0. It adds 99 tokens to every session and 5,558 once invoked, about $0.0005 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.