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 skills add Travisun/Opptrix --skill lean-letf-decaygit clone --depth 1 https://github.com/Travisun/OpptrixWrote 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/travisun/opptrix/lean-letf-decay)<a href="https://agentmods.dev/skills/travisun/opptrix/lean-letf-decay"><img src="https://agentmods.dev/badge/skills/travisun/opptrix/lean-letf-decay.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.01500 |
| Opus 5 | $0.00043 | $0.00750 |
| Sonnet 5 | $0.00017 | $0.00300 |
| Haiku 4.5 | $0.00009 | $0.00150 |
Grade A, and why
lean-letf-decay 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.
What it actually says
LEAN 杠杆ETF衰减
方法溯源 QuantConnect LEAN 社区算法/示例思路；本技能是平台工具编排的投研工作流，禁止假装跑完整 LEAN 引擎或输出 LEAN 回测曲线、订单日志冒充引擎结果。实际取数与计算仅限 Opptrix 工具（行情/财务/opptrix_run 沙盒等）。
何时使用
用户要理解杠杆/反向产品在 A股稀缺语境下的日重置、路径依赖与长期「衰减」机制（教育向；LEAN 方法溯源，非美股 LETF 原版照搬）。默认交付可预览网页。
边界：一般 ETF 研究用 @skill:etf-research。本技能是机制教育，禁止输出做空/做多杠杆 ETF 的交易指令或「衰减套利」下单步骤。
A股适配（默认）
- 默认市场 CN（A股 / 场内 ETF）。用户点名美股/港股再切换，并声明数据口径与微观结构差异。
- 杠杆产品：A股跨境/杠杆 ETF 稀缺。优先检索本地可得杠杆/反向产品；若几乎无可交易样本 → 以「机制教育 + 缺口」交付，完整度 partial / assumption-only。
- 禁止假装存在 UVXY/美股 3x LETF 等价物；禁止输出做空指令。
- T+1 与涨跌停会改变「日重置路径」可观察性，报告须注明。
- 不可硬适配或数据缺口时：首页横幅写清完整度（partial 或更严）+ 必要时
ask_user。
分析架构（投研方法）
- 问题/假设：日杠杆重置如何导致与标的多日复合收益偏离？
- 证据清单：ETF 概况、净值路径、（可选）对照标的走势
- 多维交叉验证：单日杠杆近似成立 vs 多日复合偏离；高波动区间偏离更大
- 结论与不确定：教育示例≠预测未来衰减幅度
- 微观/制度风险：涨跌停钝化、T+1、ST/停牌、融券受限（及相关会计口径差异）；不得按美股连续可成交或自由做空假设叙事
- 事实 | 假设 | 推断 分栏强制
数据维度
| 维度 | 取数方向 | 缺失时 |
|---|---|---|
| 杠杆 ETF | get_etf_list / ask_user |
先确认代码与杠杆倍数 |
| 概况/净值 | get_etf_profile / get_etf_nav |
仅机制章 |
| 对照标的（可选） | 搜索 + chart | 省略对照图 |
| 路径示意 | opptrix_run |
用假想路径表并标「示意」 |
| 交付 | list_web_vendor → create_web |
可跳过口头要点 |
| A股杠杆代理 | get_etf_list 检索可得杠杆/反向产品 |
稀缺则机制教育+缺口；禁止装美股 LETF |
步骤
- 确认默认 CN：标的/宇宙为 A股或场内 ETF（用户点名其他市场再切换并声明差异）。应用涨跌停/T+1/融券受限等微观约束（见 A股适配）。
- 确认标的与杠杆倍数：正向/反向
- 机制说明：日重置、波动拖累、路径依赖；教育语气
- 可选净值对照：事实带时效；衰减幅度为推断
- 明确非交易指令：禁止做空/套利步骤
- 交付网页（默认）：
create_web
网页报告建议目录
- 范围：默认 A股/场内 ETF + LEAN 溯源
- 日重置与路径依赖机制
- 示意数值表（标假设）
- 可选真实净值对照（事实+时效）
- 事实 / 假设 / 推断分栏
- 常见误区（含「长期必赚/必亏」）
- A股适配与限制（默认 CN；微观结构/代理/完整度）
- 免责声明（无做空/做多指令；非投资建议）
禁止
- 荐股、目标价、仓位建议；编造未返回数字
- 输出做空/做多杠杆 ETF 的交易指令或仓位
- 把教育示意写成「保证衰减套利利润」
- 禁止假装跑完整 LEAN 引擎或伪造 LEAN 日志/回测净值
- 禁止无交付就结束（默认须有 web 产物，除非用户明确只要口头要点）
- 禁止把美股成分/ETF 清单不经映射直接当 A股结果
- 禁止假设可自由融券做空
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.
- 4d ago First seen · 85 lines · 86 tokens per session scan A 112695199ef9
lean-letf-decay is a skill published in the GitHub repository Travisun/Opptrix (230 stars, last pushed yesterday), licensed Apache-2.0. It adds 86 tokens to every session and 1,500 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 2026-09-03.
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