DeepTutor CLI
HKUDS/DeepTutor
Teaches the agent to set up and run DeepTutor from the command line: chat and capabilities, knowledge bases, partners, memory, sessions, notebooks and the server or Web app.
Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine.
Install Yao Kelly Skill
$ npx skills add yaojingang/yao-open-skills --skill yao-kelly-skill -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install yaojingang/yao-open-skills yao-kelly-skill --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/yaojingang/yao-open-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/yao-kelly-skill .claude/skills/yao-kelly-skill && 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 "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .claude/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skillType 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 yaojingang/yao-open-skills --skill yao-kelly-skill -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install yaojingang/yao-open-skills yao-kelly-skill --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/yaojingang/yao-open-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/yao-kelly-skill .agents/skills/yao-kelly-skill && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .agents/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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 yaojingang/yao-open-skills --skill yao-kelly-skill -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install yaojingang/yao-open-skills yao-kelly-skill --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/yaojingang/yao-open-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/yao-kelly-skill .cursor/skills/yao-kelly-skill && 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 "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .cursor/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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/yaojingang/yao-open-skills.git --path skills/yao-kelly-skill--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 yaojingang/yao-open-skills --skill yao-kelly-skill -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install yaojingang/yao-open-skills yao-kelly-skill --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/yaojingang/yao-open-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/yao-kelly-skill .gemini/skills/yao-kelly-skill && 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 "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .gemini/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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 yaojingang/yao-open-skills yao-kelly-skillInstalls 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 yaojingang/yao-open-skills --skill yao-kelly-skill -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/yaojingang/yao-open-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/yao-kelly-skill .github/skills/yao-kelly-skill && 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 "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .github/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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 yaojingang/yao-open-skills --skill yao-kelly-skill -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install yaojingang/yao-open-skills yao-kelly-skill --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/yaojingang/yao-open-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/yao-kelly-skill .opencode/skills/yao-kelly-skill && 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 "yao-kelly-skill" agent skill from https://github.com/yaojingang/yao-open-skills/tree/main/skills/yao-kelly-skill into .opencode/skills/yao-kelly-skill/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-kelly-skill", 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
yao-kelly-skill- GitHub stars
- 1.3k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 556 words
- Files
- 29 (incl. scripts, references)
- Skills in repo
- 16
- Repo updated
- First seen
- Licence
- MIT
At a glance
Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine.
- Works in 9 steps: Use references/intake-contract.md to… → If the input is incomplete, read… → Decide whether Kelly is suitable → …
- A user needs to decide whether an opportunity is suitable for Kelly
- SKILL.md covers Use This Skill For, Do Not Route Here, Default Workflow and Core Rules, plus 1 more section
- What minimum action package to run
What it does
Yao Kelly Skill is an agent skill from yaojingang/yao-open-skills. Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine. Use when a user needs to decide whether an opportunity is suitable for Kelly, what minimum action package to run, how much resource to cap, when to add or stop, and how to review results. Do not use for pure formula tutoring, guaranteed-return claims, martingale escalation, or final licensed investment, legal, or tax advice.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 33 other files, including scripts and reference files (for example `README.md`, `agents/interface.yaml` and `history/CHANGELOG.md`).
It sits in Education, covering Tutoring and explanations. The repository describes itself as: OpenYao public skills collection: reusable AI assets for decision-making, business analysis, tutorials, research evidence gathering, and document generation. The licence is MIT.
When your agent uses it
- A user needs to decide whether an opportunity is suitable for Kelly
- What minimum action package to run
- How much resource to cap
- How to review results
Example prompts
- “/yao-kelly-skill”
Workflow steps
9 steps, taken from the first numbered list in SKILL.md.
- Use references/intake-contract.md to identify the user's real resource pool, decision question, minimum action unit, review window, and…
- If the input is incomplete, read references/multi-turn-kelly-loop.md
- Decide whether Kelly is suitable
- Use references/kelly-sizing-playbook.md to choose the formula path
- Run scripts/kelly_allocation_report.py for canonical JSON sizing output.
- Run scripts/generate_html_report.py when the user wants a polished standalone HTML report or PDF-ready artifact.
- Use references/output-contract.md to produce a practical allocation report
- Use references/logging-contract.md to maintain
- Apply references/safety-and-scope.md before finalizing.
What it can do on your machine
Read from SKILL.md and the folder at commit 093996e. 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
Ships 1 file in scripts/, which the agent can run.
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
Yao Kelly Skill loads about 1.2k tokens when it runs, and up to ~5.7k if it reads all its reference files. Until then it costs about 118 tokens; SKILL.md has 556 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); the scripts in this folder are not scanned.
SKILL.md
The full file from yaojingang/yao-open-skills at commit 093996e, republished under its MIT licence (© yaojingang). 556 words, ~1,153 tokens.
Download SKILL.mdSave it as
.claude/skills/yao-kelly-skill/SKILL.md (or your agent's skills folder). This skill also uses 28 other files; get the full folder from GitHub.- name
- yao-kelly-skill
- description
- Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine. Use when a user needs to decide whether an opportunity is suitable for Kelly, what minimum action package to run, how much resource to cap, when to add or stop, and how to review results. Do not use for pure formula tutoring, guaranteed-return claims, martingale escalation, or final licensed investment, legal, or tax advice.
Yao Kelly Skill
Use This Skill For
- turn "should I invest, bet, or allocate, and how much?" into a practical resource allocation plan
- decide whether the user's problem is actually suitable for Kelly-style sizing
- translate a percentage into a minimum action package with owner, metric, review window, add condition, and stop condition
- start with incomplete input, give a provisional view early, then ask only the minimum high-impact follow-up questions
- size a single bet or opportunity, or conservatively split a pool across several opportunities
- keep a round-by-round log for the current case and an append-only change log for future edits to this skill
Do Not Route Here
- pure formula tutoring, homework solving, or generic finance education
- requests for guaranteed returns, sure-win systems, or martingale-style escalation
- final licensed investment, legal, or tax advice
- leverage sizing with no bounded downside model
Default Workflow
- Use
references/intake-contract.mdto identify the user's real resource pool, decision question, minimum action unit, review window, and opportunity candidates. - If the input is incomplete, read
references/multi-turn-kelly-loop.md:- ask only
1-3questions that can materially change the result - recalculate
decision_readinessafter every round - stop asking when the threshold is met or the action class is already stable
- ask only
- Decide whether Kelly is suitable:
- use it when downside is bounded, the opportunity can be tested or repeated, and probabilities can be approximated
- switch to a test-first or risk-review answer when the decision is irreversible, one-off, or has unbounded downside
- Use
references/kelly-sizing-playbook.mdto choose the formula path:- binary opportunity: standard Kelly closed form
- scenario-based opportunity: maximize
E[log(1 + f * r)] - multiple opportunities: compute standalone Kelly first, then apply fractional Kelly, dependence haircuts, and total exposure scaling
- Run
scripts/kelly_allocation_report.pyfor canonical JSON sizing output. - Run
scripts/generate_html_report.pywhen the user wants a polished standalone HTML report or PDF-ready artifact. - Use
references/output-contract.mdto produce a practical allocation report:- resource snapshot
- fit assessment
- minimum action packages
- Kelly sizing cap
- add, stop, and review conditions
- Use
references/logging-contract.mdto maintain:- the case round log for the current user request
- the append-only iteration log in
history/CHANGELOG.mdwhenever this skill package changes
- Apply
references/safety-and-scope.mdbefore finalizing.
Show full SKILL.md (205 more words)Show less
Core Rules
- default to
fractional Kelly, notfull Kelly - never make the formula the main product; the main product is a resource allocation action plan
- mark each key number as
observed,estimated, orassumed - if correlation across opportunities is unknown, shrink exposure instead of assuming independence
- if the edge is negative, fragile, or mostly assumption-driven, recommend
no allocation,observe, orrun a cheap test first - always translate the final fraction into the smallest next action the user can actually do
- include add, stop, and review conditions so the allocation can improve after real feedback
- stop asking once more questions are unlikely to change the action class
- every future edit to this skill must append a dated note to
history/CHANGELOG.md
Output Contract
- deliver a Kelly application report, not just a formula
- prefer
HTML + JSONwhen the user wants a report artifact; use JSON as the audit source and HTML as the readable hand-back - the report must include:
- recommendation summary and action class
- Kelly fit assessment
- current capital or resource base, protected reserve, risk budget, and translated amount
- minimum action package per opportunity
- full Kelly fraction and conservative Kelly execution cap
- add, stop, and review conditions
- formula path and key assumptions
- why the questioning stopped
- round log
© yaojingang, 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 28 other files (scripts, references) in skills/yao-kelly-skill of yaojingang/yao-open-skills.
- SKILL.md
- README.md
- agents/interface.yaml
- history/CHANGELOG.md
- logs/README.md
- manifest.json
- references/intake-contract.md
- references/kelly-sizing-playbook.md
- references/logging-contract.md
- references/multi-turn-kelly-loop.md
- references/output-contract.md
- references/safety-and-scope.md
- reports/design-summary.md
- reports/engineering-hours-brief.json
- reports/engineering-hours-output.json
- reports/engineering-hours-report.html
- … and 13 more
Open the folder on GitHubat commit 093996e
Compare with similar skills
Yao Kelly Skill 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 |
|---|---|---|---|---|---|---|
| Yao Kelly Skill this skillyaojingang/yao-open-skills | 1.3k | — | ~1.2k | Automated safety check: Pass | MIT | |
| DeepTutor CLIHKUDS/DeepTutor | 41k | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| AI Engineering Project Tutorrohitg00/ai-engineering-from-scratch | 67k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Hung-Yi Lee Teaching Stylevoidful/hung-yi-lee-skill | 1.3k | — | ~13k | Automated safety check: Pass | None | |
| Claude Certification Tutorrohitg00/ai-engineering-from-scratch | 67k | — | ~3k | Automated safety check: Pass | MIT | |
| StudyVault Quiz Tutorbevibing/tutor-skills | 1.3k | — | ~1.4k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Yao Kelly Skill
What does Yao Kelly Skill do?
Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine. Yao Kelly Skill is an agent skill from yaojingang/yao-open-skills. Turn uncertain resource-allocation requests into practical action plans using Kelly sizing as a conservative allocation engine.
When should I use Yao Kelly Skill?
Yao Kelly Skill fits situations like: A user needs to decide whether an opportunity is suitable for Kelly; what minimum action package to run; how much resource to cap; how to review results.
How do I install Yao Kelly Skill in Claude Code?
Run `npx skills add yaojingang/yao-open-skills --skill yao-kelly-skill -a claude-code`. Or copy the skill folder (skills/yao-kelly-skill in yaojingang/yao-open-skills) into .claude/skills/yao-kelly-skill in your project. Claude Code loads it when a task matches its description.
How do I install Yao Kelly Skill in Codex?
Run `npx skills add yaojingang/yao-open-skills --skill yao-kelly-skill -a codex`. Or copy the skill folder (skills/yao-kelly-skill in yaojingang/yao-open-skills) into .agents/skills/yao-kelly-skill in your project. Codex loads it when a task matches its description.
Can I use Yao Kelly Skill 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 yaojingang/yao-open-skills --skill yao-kelly-skill -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/yao-kelly-skill, .gemini/skills/yao-kelly-skill, .github/skills/yao-kelly-skill and .opencode/skills/yao-kelly-skill in your project.
What does Yao Kelly Skill need to run?
SKILL.md names no scripts, command-line tools or credentials: Yao Kelly Skill is instructions for the agent only.
Does Yao Kelly Skill 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 Yao Kelly Skill 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Yao Kelly Skill use?
Yao Kelly Skill 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 Yao Kelly Skill use?
About 1.2k tokens (SKILL.md is roughly 4.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.6k tokens, read only when the agent opens those files.
What are the alternatives to Yao Kelly Skill?
Skills that share tags, products or a category with Yao Kelly Skill: DeepTutor CLI (HKUDS/DeepTutor, 41k stars), AI Engineering Project Tutor (rohitg00/ai-engineering-from-scratch, 67k stars), Hung-Yi Lee Teaching Style (voidful/hung-yi-lee-skill, 1.3k stars) and Claude Certification Tutor (rohitg00/ai-engineering-from-scratch, 67k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Yao Kelly Skill?
yaojingang (a GitHub user) maintains it in yaojingang/yao-open-skills, which has 1,323 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on August 28, 2026.
Source: yaojingang/yao-open-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.