Justin Sun Persona & Style Writer Agent Skill
Emulates Justin Sun's distinct narrative prose, viral hype posting style, and strategic decision-making framework.
- Context cost
- 29.3k tokensestimated from the bundle, loaded when it triggers
- Bundle
- 24 files · 120.3 kB1 script among them — read before you run
- Licence
- MITthe author’s own terms
- Last change
- —no release on file
- Servers it uses
- Noneruns standalone
What it does
孙割.skill · 孙学 —— 用孙宇晨的文风写作，并提取他的关键决策。给它一个人、一件事、一段关系、一个产品，产出一篇「孙宇晨小作文」：称重开场、一句一段、天价压在微小细节上、情绪写成动作、结尾一句「什么都没有发生」——就像那篇疯传的《我的女友景甜》。也能切成他发推的 hype 语气；还能把故事里的关键决策抠出来（例如那篇里「用 Claude 拍板要不要转五千万」），或用他的决策逻辑给一个两难一个判断。 「孙割」是「孙哥」的谐音（割韭菜的割）；「孙学」是网友对研究孙宇晨其人其法的戏称。这是文风与思维的模仿工具，不是洗白/造谣/投资顾问：涉及真人未决纠纷时走「虚构」保护伞 + 免责声明。 触发词：「用孙宇晨的文风写 X」「写篇孙割小作文」「学景甜那篇写 X」「把 X 写成孙宇晨体」「孙哥体 / 孙割体」「切换孙割」「Justin Sun writing style」「提取/分析里面的决策」「孙学」「用孙宇晨的逻辑帮我决策」。
Installed, it changes the agent in these ways.
What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.
And these are the jobs people reach for it for.
The skill itself
A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.
Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.
What it costs in context
Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.
29.3k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.
A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.
Before and after
The same question, put to the same model twice: once as it comes, and once with these instructions loaded.
No worked example has been published for this skill yet.
The procedure it runs
The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.
These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.
Servers it uses
None. This skill calls no MCP servers at all.
Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.
It does ask the agent to write files and to fetch pages, using the file and network access your client already has.
Read from the allowed-tools line of this skill’s own SKILL.md. A skill grants no permissions of its own — it can only ask for tools your client already has.
What it will not do
Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.
What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.
What is in the bundle
24 files, 120.3 kB on disk. Mostly text — the instructions the model reads — with 1 script in it that your client would run only if the instructions tell it to. 2 files of its source are not in the download — listed after these, with why.
- SKILL.md7.2 kB
- LICENSE1.3 kB
- README.md7.7 kB
- README_en.md6.0 kB
- ROADMAP.md1.4 kB
- docs/google8fcd9991381cbf50.html0.1 kB
- docs/index.html8.9 kB
- docs/robots.txt0.1 kB
- docs/sitemap.xml0.3 kB
- examples/01-my-gym-card.md3.2 kB
- examples/02-my-first-100x.md3.8 kB
- examples/03-hype-thread.md1.9 kB
- examples/04-decision-5000w.md1.5 kB
- prompts/decision.md2.7 kB
- prompts/hype.md2.2 kB
- prompts/xiaozuowen.md4.7 kB
- references/anti-cringe.md5.8 kB
- references/decisions.md10.2 kB
- references/jingtian-essay.md20.4 kB
- references/mind.md4.6 kB
- references/style-dna.md17.6 kB
- references/voice-and-facts.md5.1 kB
- tools/self_test.py3.3 kB
- .github/workflows/ci.yml0.3 kB
Not in the download
Not carried is a type a skill download does not hold. Take them from its source.
- .gitignorenot carried
- docs/.nojekyllnot carried
A skill installs nothing and depends on nothing: it is a folder your client reads. This one carries 1 script beside the text, so the download is 24 files — not the whole of its source: 2 files are left out. They are listed under the files, with why. The MIT licence covers the templates and examples as well as the instructions.
Install
Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.
# Justin Sun Persona & Style Writer · 29.3k tokens when loaded · macOS, Linux
mkdir -p .claude/skills && t=$(mktemp -d) &&
curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/justin-sun-persona-style-writer/bundle.tar.gz &&
tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/justin-sun-persona-style-writer" ] &&
{ [ ! -e .claude/skills/justin-sun-persona-style-writer ] || { mv .claude/skills/justin-sun-persona-style-writer "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } &&
mv "$t/justin-sun-persona-style-writer" .claude/skills/ && echo "Installed .claude/skills/justin-sun-persona-style-writer"npx mcprush@latest skill add swaylq/justin-sun-persona-style-writerWindows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/justin-sun-persona-style-writer/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/justin-sun-persona-style-writer/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/justin-sun-persona-style-writer" ] && { [ ! -e ~/.claude/skills/justin-sun-persona-style-writer ] || { mv ~/.claude/skills/justin-sun-persona-style-writer "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/justin-sun-persona-style-writer" ~/.claude/skills/ && echo "Installed ~/.claude/skills/justin-sun-persona-style-writer" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/justin-sun-persona-style-writer/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as sunge-skill in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, justin-sun-persona-style-writer. Not in this download: 2 files of its source (the full list, and why). Take them from its source.
Which clients pick it up on their own
A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.
Versions
Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.
Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.
Reviews
Nobody has reviewed this skill yet. The rating is the mean of the reviews written here, so there is none until somebody writes the first.
A review is tied to an account so it can be answered, edited and taken down by the person who wrote it.
Sign inAnybody with an account, one review each. It carries the version that was current when you wrote it, and the publisher may reply once.