X-Studio

A solo studio for growth operators.

Crafted skills, playbooks, and templates for shipping growth with AI agents.

Email · Say hi

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Hi, I'm Celina

I'm a growth operator. I build the systems that take products from zero users to first hundred, then first thousand.

The job keeps changing — outreach moves from email to Twitter DM to GitHub issues; content moves from blog to threads to AI-native formats; seed users move from waitlists to competitor poaching. Every time the tactics shift, the craft gets harder and the shortcuts get worse.

X-Studio is where I codify the parts that hold up. Every folder here is something I've actually used in a campaign — with the reasoning written down so an AI agent (or another operator) can run it.

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What's inside

Folder	What it is
skills/	Atomic, agent-executable skills — drop into Cursor / Claude Code / Codex
playbooks/	Narrative SOPs — end-to-end how a campaign is run
templates/	Copy-paste assets — cold emails, landing pages, forms
case-studies/	Real campaigns — methods, data, what worked, what didn't

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Featured skills

Skill	What it does
stargazer-email-scraper	Extract public emails of competitor repos' stargazers — 15–17% hit rate
competitive-intel-mining	Mine competitor communities for high-intent users complaining about real pain
seed-user-pool-stratification	Score and segment seed users by ROI before spending a single message
personalized-cold-outreach	Generate 1-to-1 personalized outreach at batch scale from a seed CSV
landing-to-issue-funnel	Turn a cold email into a pre-filled GitHub Issue / form capture loop
content-repurpose-engine	One insight → bilingual threads, long-form, video hooks
growth-experiment-template	Structured experiment doc — hypothesis, metric, decision rule

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How to use

In Cursor / Claude Code

git clone https://github.com/Celina-create/X-Studio.git ~/x-studio
ln -s ~/x-studio/skills ~/.claude/skills/x-studio
# or a single skill
ln -s ~/x-studio/skills/competitive-intel-mining ~/.cursor/skills/competitive-intel-mining

Invoke by name in chat: "Use competitive-intel-mining on this competitor's GitHub issues."

As a reference

Nothing here is copy-protected. Steal what's useful. A credit back is appreciated, not required.

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Principles

1. Every skill must have shipped at least once. No theoretical playbooks — if I haven't run it, it doesn't get published.
2. Optimize for ROI, not volume. Precision over spray, always.
3. Agents are teammates. Every skill is written so an AI can execute it without hand-holding.
4. Open the process. Methods and data are public; only client/user data is redacted.

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Let's talk

• Want a skill I haven't built? Open an issue
• Need help on a campaign or want to exchange notes? Email suokata@naver.com
• Find it useful? A star tells me to keep sharing.

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License

MIT © 2026 Celina

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_{Growth is a craft. This is the bench.}