Marketplace Adjacent Design

Q: What is a Claude Code skill and how does the Marketplace Adjacent Design skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Marketplace Adjacent Design is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Growth & Marketing · Sub-category: seo · Last updated: 2026-11-01

Use when adding ANY user-to-user trading, selling, matching, or classifieds feature to an app — before writing the first table or view. Carries the pure-introduction architecture (match users, deep-link them off-platform, never host the transaction), the never-touch-money hard rule (marketplace-facilitator law avoidance), Apple guideline 1.2 minimum-viable UGC controls (filter / mailto report / bilateral block / published contact), the passive-matching §230 posture, EU DSA geo-blocking, the 12-clause ToS checklist with the 3 trading-specific clauses templates miss, and the documented risk-acceptance table. Triggers on trading, marketplace, P2P, user-to-user selling, buy/sell/trade, escrow, per-trade fee, match alerts, §1.2, UGC controls, "let users trade with each other", classifieds, want list matching.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Distilled from BOBA Playbook's TRADE-DESIGN.md (ratified 2026-05-05): a solo-dev collectibles app that added trading-match features under a hard $0-ongoing-cost constraint, four parallel research passes (Apple policy, US/EU liability, payments, fraud patterns), and one v1 rewrite that cut the architecture from "thin in-app messaging" down to pure introduction. This is research-derived design, not legal advice.

What this skill does

Marketplace Adjacent Design is a community-contributed Claude Code skill in the seo sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/marketplace-adjacent-design/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when adding ANY user-to-user trading, selling, matching, or classifieds feature to an app — before writing the first table or view. Carries the pure-introduction architecture (match users, deep-link them off-platform, never host the transaction), the never-touch-money hard rule (marketplace-facilitator law avoidance), Apple guideline 1.

Who uses this skill

The Marketplace Adjacent Design Claude Code skill is built for growth marketers, product-led growth teams, founders running experiments, and performance marketing teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/marketplace-adjacent-design
curl -L https://claudskills.com/skills/marketplace-adjacent-design/SKILL.md \
  -o ~/.claude/skills/marketplace-adjacent-design/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/marketplace-adjacent-design/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/marketplace-adjacent-design/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\marketplace-adjacent-design\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Marketplace Adjacent Design Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/marketplace-adjacent-design/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Marketplace Adjacent Design skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Marketplace Adjacent Design skill?

Use Marketplace Adjacent Design when your Claude Code task falls under the Growth & Marketing category — specifically in the seo area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Marketplace Adjacent Design" or describe the task and let Claude pick). Browse related skills at /category/growth/.

What is a Claude Code skill and how does the Marketplace Adjacent Design skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Marketplace Adjacent Design is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

SattikBhaumik. (2026). Marketplace Adjacent Design [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/marketplace-adjacent-design/

BibTeX

@misc{marketplace-adjacent-design-2026,
  author    = {SattikBhaumik},
  title     = {Marketplace Adjacent Design [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/marketplace-adjacent-design/}
}

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Security scan

Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/marketplace-adjacent-design/#security)

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Browse all Growth & Marketing skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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