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.
npx agentmods add skills/bookforge-ai/bookforge-skills/composite-pattern-implementornpx skills add bookforge-ai/bookforge-skills --skill composite-pattern-implementorgit clone --depth 1 https://github.com/bookforge-ai/bookforge-skillsWrote 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.
[](https://agentmods.dev/skills/bookforge-ai/bookforge-skills/composite-pattern-implementor)<a href="https://agentmods.dev/skills/bookforge-ai/bookforge-skills/composite-pattern-implementor"><img src="https://agentmods.dev/badge/skills/bookforge-ai/bookforge-skills/composite-pattern-implementor.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00086 | $0.05840 |
| Opus 5 | $0.00043 | $0.02920 |
| Sonnet 5 | $0.00017 | $0.01168 |
| Haiku 4.5 | $0.00009 | $0.00584 |
Grade A, and why
composite-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 6d 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.
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.
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.
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.
- 6d ago First seen · 503 lines · 86 tokens per session scan A ed098f6796ba
composite-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 86 tokens to every session and 5,840 once invoked, about $0.0004 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.
Other skills, from other repositories
fin-arch-diagram
生成研究/项目架构图、流程图、层次图（swimlane / processflow / hierarchytree）。适合 PPT 汇报、技术文档、综述插图。输出风格接近 draw.io，可选 graphviz（高质量）/ matplotlib（零依赖）双后端。.
convert-package
Build a complete sales asset end-to-end via The Donahoe Method: diagnostic → primitives → fingerprint → page → integrity-gate → visual → audit → report. Composite orchestrator that calls 14-16 sub-skills via delegatetask in an 8-phase DAG (sequential where dependencies require it, parallel where they don't). Produces…
refactor
Refactors specified code to improve clarity, reduce duplication, or align with the project's architectural patterns — without changing external behavior. Invoked when the user asks to refactor, clean up, simplify, or restructure code.
pattern
Judge whether a UI component need should use an existing shadcn/ui, 21st.dev, or ReUI component, or requires a custom build guided by a real-app reference from Mobbin/Figma Community.
principle-product-design
UX and product design principles — Nielsen's 10 usability heuristics, visual hierarchy, interaction design patterns, design-system compliance, and responsive layout. Accessibility/WCAG conformance is delegated to swe-workbench:principle-accessibility. Auto-load when reviewing UX, evaluating usability, assessing visual…
principle-accessibility
Accessibility (a11y) principles — WCAG 2.2 AA conformance, semantic HTML, keyboard navigation, focus management, focus traps, color contrast, alt text, screen reader compatibility, reduced motion. Auto-load when reviewing frontend or UI code, evaluating ARIA usage, auditing color contrast, building modals or dialogs…