Agent skill

Investing From Darwin

by simbajigege in simbajigege/book2skills

Apply Pulak Prasad evolutionary investing rules for avoiding big losses, buying resilient quality, rejecting fragile forecasts, and being very lazy.

Custom licenceAuto-check passedBusiness, Finance & HR

Install Investing From Darwin

skills CLI
$ npx skills add simbajigege/book2skills --skill investing-from-darwin -a claude-code

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

GitHub CLI
$ gh skill install simbajigege/book2skills investing-from-darwin --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/simbajigege/book2skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/investing-from-darwin .claude/skills/investing-from-darwin && 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/

Facts

Skill name
investing-from-darwin
GitHub stars
183
Token cost
~2.3k tokens
SKILL.md length
1,029 words
Files
5
Skills in repo
37
Repo updated
First seen
Licence
Custom licence

At a glance

Apply Pulak Prasad evolutionary investing rules for avoiding big losses, buying resilient quality, rejecting fragile forecasts, and being very lazy.

  • Works in 4 steps: Run Avoid Big Risks. → Test Quality at Fair Price. → Challenge forecast precision. → …
  • Business, Finance & HR work in your project
  • SKILL.md covers Overview, When to Use This Skill, Core Principle and Workflow Inventory, plus 6 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Investing From Darwin is an agent skill from simbajigege/book2skills. Apply Pulak Prasad evolutionary investing rules for avoiding big losses, buying resilient quality, rejecting fragile forecasts, and being very lazy.

Its SKILL.md is about 2.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `README.md`, `quotes/evolutionary-investing-quotes.md` and `quotes/investing-principles-quotes.md`).

It sits in Business, Finance & HR. The repository describes itself as: Create best skills based on best books.

When your agent uses it

  • Business, Finance & HR work in your project

Example prompts

  • “/investing-from-darwin”

Workflow steps

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

  1. Run Avoid Big Risks.
  2. Test Quality at Fair Price.
  3. Challenge forecast precision.
  4. Decide whether to buy, avoid, hold, or wait very lazily.

What it can do on your machine

Read from SKILL.md and the folder at commit e5ba66c. 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

Investing From Darwin loads about 2.3k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 1,029 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~43
When it runs · the whole SKILL.md, loaded when a task matches
~2.3k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,029 words (~2,275 tokens).

“Knowledge source: What I Learned About Investing from Darwin by Pulak Prasad.”

— opening of SKILL.md by simbajigege, Custom licence
name
investing-from-darwin
license
Skill distillation for personal/educational use. Do not reproduce source passages verbatim.

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files in skills/investing-from-darwin of simbajigege/book2skills.

  • SKILL.md
  • LICENSE.txt
  • README.md
  • quotes/evolutionary-investing-quotes.md
  • quotes/investing-principles-quotes.md

Open the folder on GitHubat commit e5ba66c

Compare with similar skills

Investing From Darwin 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.

Investing From Darwin compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Investing From Darwin this skillsimbajigege/book2skills183—~2.3kAutomated safety check: PassCustom licence
Technical Analysttradermonty/claude-trading-skills3k4 repos~4.6kAutomated safety check: PassMIT
Theme Detectortradermonty/claude-trading-skills3k2 repos~4.9kAutomated safety check: PassMIT
Creating Financial ModelsChen-zexi/open-ptc-agent7293 repos~1.3kAutomated safety check: PassMIT
Stock APIzhangxiangliang/stock-api2k—~507Automated safety check: PassMIT
Itr Walakaranb192/itr-wala871—~3.6kAutomated safety check: PassMIT

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Questions about Investing From Darwin

What does Investing From Darwin do?

Apply Pulak Prasad evolutionary investing rules for avoiding big losses, buying resilient quality, rejecting fragile forecasts, and being very lazy. Investing From Darwin is an agent skill from simbajigege/book2skills. Apply Pulak Prasad evolutionary investing rules for avoiding big losses, buying resilient quality, rejecting fragile forecasts, and being very lazy.

When should I use Investing From Darwin?

Investing From Darwin fits situations like: business, Finance & HR work in your project.

How do I install Investing From Darwin in Claude Code?

Run `npx skills add simbajigege/book2skills --skill investing-from-darwin -a claude-code`. Or copy the skill folder (skills/investing-from-darwin in simbajigege/book2skills) into .claude/skills/investing-from-darwin in your project. Claude Code loads it when a task matches its description.

How do I install Investing From Darwin in Codex?

Run `npx skills add simbajigege/book2skills --skill investing-from-darwin -a codex`. Or copy the skill folder (skills/investing-from-darwin in simbajigege/book2skills) into .agents/skills/investing-from-darwin in your project. Codex loads it when a task matches its description.

Can I use Investing From Darwin 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 simbajigege/book2skills --skill investing-from-darwin -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/investing-from-darwin, .gemini/skills/investing-from-darwin, .github/skills/investing-from-darwin and .opencode/skills/investing-from-darwin in your project.

What does Investing From Darwin need to run?

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

Does Investing From Darwin 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 Investing From Darwin 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 Investing From Darwin use?

Investing From Darwin has a licence file (from the LICENSE file in the skill folder) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Investing From Darwin use?

About 2.3k tokens (SKILL.md is roughly 9.1k 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 Investing From Darwin?

Skills that share tags, products or a category with Investing From Darwin: Technical Analyst (tradermonty/claude-trading-skills, 3k stars), Theme Detector (tradermonty/claude-trading-skills, 3k stars), Creating Financial Models (Chen-zexi/open-ptc-agent, 729 stars) and Stock API (zhangxiangliang/stock-api, 2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Investing From Darwin?

simbajigege (a GitHub user) maintains it in simbajigege/book2skills, which has 183 GitHub stars. The repository holds 37 skills in this directory. The repository was last updated on August 26, 2026.

Source: simbajigege/book2skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.