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/jackjin1997/clawforge/language-learningnpx skills add jackjin1997/ClawForge --skill language-learninggit clone --depth 1 https://github.com/jackjin1997/ClawForgeWhat 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 | $0.00130 | $0.02607 |
| Opus 5 | $0.00065 | $0.01303 |
| Sonnet 5 | $0.00026 | $0.00521 |
| Haiku 4.5 | $0.00013 | $0.00261 |
Grade A, and why
language-learning 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 2d 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
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 298 lines · 130 tokens per session scan A bb9b988f3423
language-learning is a skill published in the GitHub repository jackjin1997/ClawForge (12 stars, last pushed 2mo ago), with no licence file. It adds 130 tokens to every session and 2,607 once invoked, about $0.0006 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
tutor
Drill your recorded pains (friction phrasings, grammar fixes, irregular verbs, learned vocab) with spaced repetition. Usage: /tutor [size].
seedance-vocab-es
This skill should be used when the user asks for Spanish Seedance 2.0 prompt wording, Spanish cinematic vocabulary, or translation of camera, lighting, action, VFX, audio, and production terms into Spanish.
scaffold-exercises
创建包含 section、problem、solution 和 explainer 的练习目录结构，且能通过 lint 检查。当用户想要搭建练习框架、创建练习模板或设置新的课程章节时使用。.
teach
在当前工作区中教会用户一项新技能或概念。.
seedance-vocab-es
This skill should be used when the user asks for Spanish Seedance 2.0 prompt wording, Spanish cinematic vocabulary, or translation of camera, lighting, action, VFX, audio, and production terms into Spanish.
memory
跨会话长期记忆：读写经验 SOP 与环境事实；管理 pending 候选、溯源、归档/回滚、统计与维护。当任务涉及本机环境、工具配置、以前踩过的坑，或任务完成发现值得沉淀的验证经验时使用。.