Market Sentiment Analysis
HKUDS/Vibe-Trading
Turns market mood into numbers: fear-and-greed gauges, put-call ratio, margin financing, northbound flows and social media chatter, combined into one score.
用户面对市场极端情绪时需要做出逆向来决策。当所有人都在买入/卖出、市场处于极端乐观/悲观时. An agent skill from kangarooking/buffett-letters-skill.
MITAuto-check passed
Install Fear And Greed
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greed --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/fear-and-greed .claude/skills/fear-and-greed && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .claude/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greedType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greed --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/fear-and-greed .agents/skills/fear-and-greed && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .agents/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greed --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/fear-and-greed .cursor/skills/fear-and-greed && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .cursor/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/kangarooking/buffett-letters-skill.git --path fear-and-greed--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greed --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/fear-and-greed .gemini/skills/fear-and-greed && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .gemini/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greedInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/fear-and-greed .github/skills/fear-and-greed && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .github/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install kangarooking/buffett-letters-skill fear-and-greed --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/buffett-letters-skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/fear-and-greed .opencode/skills/fear-and-greed && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "fear-and-greed" agent skill from https://github.com/kangarooking/buffett-letters-skill/tree/main/fear-and-greed into .opencode/skills/fear-and-greed/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fear-and-greed", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
fear-and-greed- GitHub stars
- 102
- Token cost
- ~493 tokens
- SKILL.md length
- 132 words
- Files
- 2
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- MIT
At a glance
用户面对市场极端情绪时需要做出逆向来决策。当所有人都在买入/卖出、市场处于极端乐观/悲观时. An agent skill from kangarooking/buffett-letters-skill.
- Works in 4 steps: "别人贪婪时恐惧"：当市场价格高涨、信心爆棚、故事动听 → 价格可能已超过价值… → "别人恐惧时贪婪"：当市场恐慌、信心崩溃、"这次完了" → 价格可能远低于价值… → 关键前提：你必须能独立评估内在价值——否则你不知道"贪婪时"的价是贵还是便宜 → …
- SKILL.md covers R — 原文 (Reading), I — 方法论骨架 (Interpretation), A1 — 书中的应用 and A2 — 触发场景, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Fear And Greed is an agent skill from kangarooking/buffett-letters-skill. 用户面对市场极端情绪时需要做出逆向来决策。当所有人都在买入/卖出、市场处于极端乐观/悲观时。 语言信号："所有人都在赚钱"/"这次不一样"/"市场要崩了要不要全卖"/"再不买就来不及了" 不适用于：正常市场环境下的投资决策、纯基本面分析。
Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `test-prompts.json`).
The repository describes itself as: An AI skill pack for value investing, capital allocation, and behavioral discipline, distilled from Warren Buffett's 60+ years of shareholder letters. The licence is MIT.
Example prompts
- “所有人都在赚钱”
- “市场要崩了要不要全卖”
- “再不买就来不及了”
- “/fear-and-greed”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- "别人贪婪时恐惧"：当市场价格高涨、信心爆棚、故事动听 → 价格可能已超过价值 → 不买/考虑卖
- "别人恐惧时贪婪"：当市场恐慌、信心崩溃、"这次完了" → 价格可能远低于价值 → 考虑买
- 关键前提：你必须能独立评估内在价值——否则你不知道"贪婪时"的价是贵还是便宜
- 这是市场先生框架的具体行动版本
What it can do on your machine
Read from SKILL.md and the folder at commit 5b1fbe1. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Fear And Greed loads about 493 tokens when it runs. Until then it costs about 34 tokens; SKILL.md has 132 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from kangarooking/buffett-letters-skill at commit 5b1fbe1, republished under its MIT licence (© kangarooking). 132 words, ~493 tokens.
Download SKILL.mdSave it as
.claude/skills/fear-and-greed/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- fear-and-greed
- description
- 用户面对市场极端情绪时需要做出逆向来决策。当所有人都在买入/卖出、市场处于极端乐观/悲观时。 语言信号："所有人都在赚钱"/"这次不一样"/"市场要崩了要不要全卖"/"再不买就来不及了" 不适用于：正常市场环境下的投资决策、纯基本面分析。
- source_book
- 《巴菲特致股东的信》 沃伦·巴菲特
- source_chapter
- 1986年信
- tags
- behavioral, contrarian, greed, fear, market-extremes
- related_skills
- mr-market, aesop-three-questions, margin-of-safety, institutional-imperative
恐惧与贪婪逆向
R — 原文 (Reading)
"We simply attempt to be fearful when others are greedy and to be greedy only when others are fearful."
— Warren Buffett, 1986年信
I — 方法论骨架 (Interpretation)
不是简单的"反向操作"，而是一个基于内在价值的逆向框架：
- "别人贪婪时恐惧"：当市场价格高涨、信心爆棚、故事动听 → 价格可能已超过价值 → 不买/考虑卖
- "别人恐惧时贪婪"：当市场恐慌、信心崩溃、"这次完了" → 价格可能远低于价值 → 考虑买
- 关键前提：你必须能独立评估内在价值——否则你不知道"贪婪时"的价是贵还是便宜
- 这是市场先生框架的具体行动版本
A1 — 书中的应用
案例1: 2008年金融危机
- 问题: 市场极度恐慌，是否应该躲在现金里？
- 使用: 别人恐惧时贪婪——向Goldman Sachs和GE注资$8亿和$3亿
- 结果: 获得优厚条款和丰厚回报
案例2: 互联网泡沫
- 问题: 所有科技股暴涨，价值投资者严重落后
- 使用: 别人贪婪时恐惧——坚持不投资看不懂的科技股
- 结果: 避开泡沫破裂，而追逐者损失惨重
A2 — 触发场景
- 市场连续上涨数月，身边所有人都在赚钱
- 某资产从高点大幅下跌，新闻一片恐慌
- 有人用"这次不一样"来说服你
- FOMO（怕错过）情绪强烈
- 想要"割肉"止损但基本面未变
语言信号
- "所有人都在买XX"
- "这次不一样"
- "再不买就来不及了"
- "完了，要崩盘了"
- "我应该止损吗？"
与相邻 skill 的区分
- 与
mr-market的区别：市场先生是认知框架（你怎么看价格），恐惧贪婪是行动原则（你什么时候买/卖） - 与
real-conservatism的区别：保守≠传统是关于不盲从，恐惧贪婪是关于逆向行动
E — 可执行步骤
诊断市场情绪
- 完成标准：判断当前是"极度贪婪/贪婪/中性/恐惧/极度恐惧"
- 参考信号：新闻头条情绪、身边人讨论频率、估值水平
回到内在价值（不是反向跟风）
- 完成标准：独立评估内在价值，标注当前价格与价值的差距
- 判停：如果无法评估内在价值 → 不行动（逆向≠赌博）
执行逆向操作
- 极度贪婪+价格>价值 → 减仓/不买
- 极度恐惧+价格<价值 → 加仓/买入
- 情绪极端但价值不确定 → 不行动
B — 边界
- 不是"永远做反向操作"——有时多数人是对的（如2009年3月后的持续上涨）
- 需要极强的心理素质和独立资金——被迫在最低点卖出的人不是不理性，而是没有选择
- "别人恐惧"不等于"底部已到"——恐惧可以持续很久
- 作者盲点：巴菲特有永久资本（保险浮存金），可以在别人恐惧时持续买入——散户没有这个条件
相关 skills (阶段 3 填充)
- depends-on: mr-market, aesop-three-questions
- contrasts-with: institutional-imperative
- composes-with: margin-of-safety
审计信息
- 验证通过: V1 ✓ / V2 ✓ / V3 ✓
- 蒸馏时间: 2026-04-16
© kangarooking, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in fear-and-greed of kangarooking/buffett-letters-skill.
- SKILL.md
- test-prompts.json
Open the folder on GitHubat commit 5b1fbe1
Compare with similar skills
Fear And Greed next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Fear And Greed this skillkangarooking/buffett-letters-skill | 102 | — | ~493 | Automated safety check: Pass | MIT | |
| Market Sentiment AnalysisHKUDS/Vibe-Trading | 35k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Analyzing Market Sentimentjeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Defi Overviewaeonfun/aeon | 770 | — | ~6.6k | Automated safety check: Pass | MIT | |
| Sentiment Analysisagiprolabs/claude-trading-skills | 410 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Analyzing Market SentimentaAAaqwq/AGI-Super-Team | 105 | — | ~1.6k | Automated safety check: Pass | MIT |
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Questions about Fear And Greed
What does Fear And Greed do?
用户面对市场极端情绪时需要做出逆向来决策。当所有人都在买入/卖出、市场处于极端乐观/悲观时. An agent skill from kangarooking/buffett-letters-skill. Fear And Greed is an agent skill from kangarooking/buffett-letters-skill.
How do I install Fear And Greed in Claude Code?
Run `npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a claude-code`. Or copy the skill folder (fear-and-greed in kangarooking/buffett-letters-skill) into .claude/skills/fear-and-greed in your project. Claude Code loads it when a task matches its description.
How do I install Fear And Greed in Codex?
Run `npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a codex`. Or copy the skill folder (fear-and-greed in kangarooking/buffett-letters-skill) into .agents/skills/fear-and-greed in your project. Codex loads it when a task matches its description.
Can I use Fear And Greed in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kangarooking/buffett-letters-skill --skill fear-and-greed -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fear-and-greed, .gemini/skills/fear-and-greed, .github/skills/fear-and-greed and .opencode/skills/fear-and-greed in your project.
What does Fear And Greed need to run?
SKILL.md names no scripts, command-line tools or credentials: Fear And Greed is instructions for the agent only.
Does Fear And Greed access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Fear And Greed safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Fear And Greed use?
Fear And Greed is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Fear And Greed use?
About 493 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Fear And Greed?
Skills that share tags, products or a category with Fear And Greed: Market Sentiment Analysis (HKUDS/Vibe-Trading, 35k stars), Analyzing Market Sentiment (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Defi Overview (aeonfun/aeon, 770 stars) and Sentiment Analysis (agiprolabs/claude-trading-skills, 410 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fear And Greed?
kangarooking (a GitHub user) maintains it in kangarooking/buffett-letters-skill, which has 102 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on April 17, 2026.
Source: kangarooking/buffett-letters-skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.