Agent skill

Turtle Trading

by questflowai in questflowai/investorskills

A skill your agent uses when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following.

MITAuto-check passedBusiness, Finance & HR

Install Turtle Trading

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/turtle-trading .claude/skills/turtle-trading && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .claude/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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

$skill-installer install https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading

Type 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.

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/turtle-trading .agents/skills/turtle-trading && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .agents/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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.

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/turtle-trading .cursor/skills/turtle-trading && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .cursor/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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

$ gemini skills install https://github.com/questflowai/investorskills.git --path skills/turtle-trading

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/turtle-trading .gemini/skills/turtle-trading && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .gemini/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading

Installs 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).

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/turtle-trading .github/skills/turtle-trading && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .github/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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.

skills CLI

$ npx skills add questflowai/investorskills --skill turtle-trading -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install questflowai/investorskills turtle-trading --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/questflowai/investorskills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/turtle-trading .opencode/skills/turtle-trading && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "turtle-trading" agent skill from https://github.com/questflowai/investorskills/tree/main/skills/turtle-trading into .opencode/skills/turtle-trading/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "turtle-trading", 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: turtle-trading
GitHub stars: 1.9k
Token cost: ~344 tokens
SKILL.md length: 136 words
Files: 2
Skills in repo: 63
Repo updated: Aug 23, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

A skill your agent uses when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following.

Works in 5 steps: Define breakout system and lookback. → Calculate ATR/N risk unit. → Define initial stop and add levels. → …
Evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels
SKILL.md covers When To Use, Process, Output Format and Guardrails, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Turtle Trading is an agent skill from questflowai/investorskills. Use when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following.

Its SKILL.md is about 340 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `invest.md`).

It sits in Business, Finance & HR, covering Trading and backtesting. The repository describes itself as: Investor Skills is an open-source library that turns durable investing judgment into portable, structured formats. It collects how great investors think, filter opportunities… The licence is MIT.

When your agent uses it

Evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels
ATR/N-unit sizing
Fully rule-based trend following

Example prompts

“/turtle-trading”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Define breakout system and lookback.
Calculate ATR/N risk unit.
Define initial stop and add levels.
Limit portfolio heat and correlated markets.
Exit by system rule, not opinion.

What it can do on your machine

Read from SKILL.md and the folder at commit 2844d78. 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 (its code samples are markdown).
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

Turtle Trading loads about 344 tokens when it runs. Until then it costs about 49 tokens; SKILL.md has 136 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~49
When it runs · the whole SKILL.md, loaded when a task matches: ~344

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 questflowai/investorskills at commit 2844d78, republished under its MIT licence (© questflowai). 136 words, ~344 tokens.

Download SKILL.mdSave it as .claude/skills/turtle-trading/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: turtle-trading
description: Use when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following.
invest: ./invest.md

Turtle Trading

Use this skill to apply Turtle-style systematic breakout trading: buy/sell breakouts, size by ATR, add by N units, control portfolio heat, and follow rules without discretion.

When To Use

Donchian breakout strategy review
ATR/N-unit position sizing
Rule-based futures, FX, crypto, or stock trend system
Portfolio heat and pyramiding plan

Trigger phrases include Turtles, Richard Dennis, Donchian, ATR, N unit, 20-day breakout, 55-day breakout, and systematic breakout.

Process

Define breakout system and lookback.
Calculate ATR/N risk unit.
Define initial stop and add levels.
Limit portfolio heat and correlated markets.
Exit by system rule, not opinion.

Output Format

# Turtle View: [Market / System]

## Verdict
Enter / Add / Hold / Exit / No Signal

## Breakout Rule
## N / ATR
## Unit Size
## Stop
## Portfolio Heat

Guardrails

Do not use discretionary excuses to skip rules.
Do not exceed heat limits.
Do not average down.

Questflow Use

In Questflow, this skill is best used as a rule-based trend-following execution template.

Files

SKILL.md and 1 other file in skills/turtle-trading of questflowai/investorskills.

SKILL.md
invest.md

Open the folder on GitHubat commit 2844d78

Compare with similar skills

Turtle Trading 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.

Turtle Trading compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Turtle Trading this skillquestflowai/investorskills	1.9k	—	~344	Automated safety check: Pass	MIT	1 mo ago
Tushare Datazillionare/zillionare	319	2 repos	~2.3k	Automated safety check: Pass	None	today
Tradingview MCPatilaahmettaner/tradingview-mcp	5k	—	~1.3k	Automated safety check: Pass	MIT	today
Digital Oraclekomako-workshop/digital-oracle	870	—	~5.9k	Automated safety check: Pass	MIT	2 mo ago
Fintoolsecond-state/fintool	316	1 repos	~5.9k	Automated safety check: Pass	None	4 mo ago
Polyclawchainstacklabs/polyclaw	360	1 repos	~2k	Automated safety check: Pass	Apache-2.0	5 mo ago

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Questions about Turtle Trading

What does Turtle Trading do?

A skill your agent uses when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following. Turtle Trading is an agent skill from questflowai/investorskills. Use when evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels, ATR/N-unit sizing, pyramiding, portfolio heat, and fully rule-based trend following.

When should I use Turtle Trading?

Turtle Trading fits situations like: evaluating Richard Dennis / Turtle Trading-style breakout systems: Donchian channels; ATR/N-unit sizing; fully rule-based trend following.

How do I install Turtle Trading in Claude Code?

Run `npx skills add questflowai/investorskills --skill turtle-trading -a claude-code`. Or copy the skill folder (skills/turtle-trading in questflowai/investorskills) into .claude/skills/turtle-trading in your project. Claude Code loads it when a task matches its description.

How do I install Turtle Trading in Codex?

Run `npx skills add questflowai/investorskills --skill turtle-trading -a codex`. Or copy the skill folder (skills/turtle-trading in questflowai/investorskills) into .agents/skills/turtle-trading in your project. Codex loads it when a task matches its description.

Can I use Turtle Trading 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 questflowai/investorskills --skill turtle-trading -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/turtle-trading, .gemini/skills/turtle-trading, .github/skills/turtle-trading and .opencode/skills/turtle-trading in your project.

What does Turtle Trading need to run?

SKILL.md names no scripts, command-line tools or credentials: Turtle Trading is instructions for the agent only.

Does Turtle Trading 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 Turtle Trading 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 Turtle Trading use?

Turtle Trading 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 Turtle Trading use?

About 344 tokens (SKILL.md is roughly 1.4k 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 Turtle Trading?

Skills that share tags, products or a category with Turtle Trading: Tushare Data (zillionare/zillionare, 319 stars), Tradingview MCP (atilaahmettaner/tradingview-mcp, 5k stars), Digital Oracle (komako-workshop/digital-oracle, 870 stars) and Fintool (second-state/fintool, 316 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Turtle Trading?

questflowai (a GitHub organization) maintains it in questflowai/investorskills, which has 1,896 GitHub stars. The repository holds 63 skills in this directory. The repository was last updated on August 23, 2026.

Source: questflowai/investorskills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Turtle Trading

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Turtle Trading

When To Use

Process

Output Format

Guardrails

Questflow Use

Files

Compare with similar skills

Similar skills

More from questflowai/investorskills

Related

Questions about Turtle Trading