Idea Refinement
addyosmani/agent-skills
Guides a conversation that takes a vague idea through divergent and convergent thinking and ends in a markdown one-pager covering scope and assumptions.
Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects.
MITAuto-check passed
Install Marketplace Advisor
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install borghei/Claude-Skills marketplace-advisor --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .claude/skills/marketplace-advisor && rm -rf skills-srcUse ~/.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/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .claude/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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 install https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisorType 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.
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install borghei/Claude-Skills marketplace-advisor --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .agents/skills/marketplace-advisor && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .agents/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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.
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install borghei/Claude-Skills marketplace-advisor --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .cursor/skills/marketplace-advisor && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .cursor/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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 https://github.com/borghei/Claude-Skills.git --path vertical-advisors/marketplace-advisor--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install borghei/Claude-Skills marketplace-advisor --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .gemini/skills/marketplace-advisor && rm -rf skills-srcUse ~/.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/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .gemini/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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.
$ gh skill install borghei/Claude-Skills marketplace-advisorInstalls 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).
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .github/skills/marketplace-advisor && rm -rf skills-srcUse ~/.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/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .github/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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.
$ npx skills add borghei/Claude-Skills --skill marketplace-advisor -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install borghei/Claude-Skills marketplace-advisor --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/borghei/Claude-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/vertical-advisors/marketplace-advisor .opencode/skills/marketplace-advisor && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "marketplace-advisor" agent skill from https://github.com/borghei/Claude-Skills/tree/main/vertical-advisors/marketplace-advisor into .opencode/skills/marketplace-advisor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "marketplace-advisor", 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
marketplace-advisor- GitHub stars
- 891
- Token cost
- ~1.3k tokens
- SKILL.md length
- 588 words
- Files
- 5 (incl. scripts, references, assets)
- Skills in repo
- 354
- Repo updated
- First seen
- Licence
- MIT
At a glance
Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects.
- Works in 4 steps: Capture key metrics: GMV, take rate,… → Run: python… → Identify which dimension is the… → …
- Scoping a marketplace idea
- SKILL.md covers Keywords, Clarify First, Quick Start and Core Workflows, plus 5 more sections
- Runs Python scripts from its folder; calls python
What it does
Marketplace Advisor is an agent skill from borghei/Claude-Skills. Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects. Use when scoping a marketplace idea or scoring health, or mentioning marketplace, take rate, liquidity, or network effects.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts, reference files and assets (for example `assets/marketplace_metrics_template.json`, `references/marketplace_dynamics.md` and `references/take_rate_design.md`).
The repository describes itself as: 385 AI skills, 77 expert agents, and 900 stdlib Python tools for every team: engineering, PM, marketing, C-level, compliance, business ops, research, and a LinkedIn toolkit… The licence is MIT.
When your agent uses it
- Scoping a marketplace idea
- Mentioning marketplace
- Network effects
Example prompts
- “/marketplace-advisor”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Capture key metrics: GMV, take rate, supply, demand, fill rate, repeat rate
- Run: python scripts/marketplace_health_scorer.py metrics.json
- Identify which dimension is the constraint (usually one of: not enough supply, not enough demand, low repeat, weak liquidity, take rate…
- Plan one focused intervention; don't try to fix all five at once
What it can do on your machine
Read from SKILL.md and the folder at commit 4a698e8. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
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
Marketplace Advisor loads about 1.3k tokens when it runs, and up to ~5k if it reads all its reference files. Until then it costs about 65 tokens; SKILL.md has 588 words of instructions outside code blocks.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from borghei/Claude-Skills at commit 4a698e8, republished under its MIT licence (© borghei). 588 words, ~1,345 tokens.
Download SKILL.mdSave it as
.claude/skills/marketplace-advisor/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- marketplace-advisor
- description
- Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects. Use when scoping a marketplace idea or scoring health, or mentioning marketplace, take rate, liquidity, or network effects.
- license
- MIT + Commons Clause
- metadata.version
- 1.0.0
- metadata.author
- borghei
- metadata.category
- vertical-advisors
- metadata.domain
- marketplace
- metadata.updated
- 2026-05-04
- metadata.python-tools
- marketplace_health_scorer.py
- metadata.tech-stack
- marketplace, network-effects
Marketplace Advisor
Strategic frameworks for two-sided and multi-sided marketplace founders, operators, and product leaders. Marketplaces have distinctive economics — most ecommerce / SaaS playbooks don't translate.
Keywords
marketplace, two-sided market, three-sided market, multi-sided market, supply, demand, liquidity, take rate, network effects, chicken and egg, GMV, repeat rate, fill rate, supply density
Clarify First
Before scoring, confirm these inputs. If any is unknown or vague, ASK — do not assume:
- Measurement unit — whole marketplace or one liquid segment (city/category)? Liquidity beats GMV; a blended global number can hide a broken core (sets what the score actually describes)
- Category + take rate — benchmarks vary widely (Etsy ~6.5% vs Uber ~25-30%), so the take-rate-sustainability dimension is meaningless without the category
- Supply, demand, and fill rate — drive the liquidity and balance dimensions, usually the binding constraint
- Repeat rate — drives repeat-strength; a low repeat often signals off-platform leakage rather than a healthy marketplace
Stop rule: ask only the 2-3 that most change the output. If the user says "just draft it," proceed and list your assumptions at the top of the score.
Quick Start
python scripts/marketplace_health_scorer.py metrics.jsonScores marketplace health across liquidity, supply/demand balance, take rate sustainability, repeat rate, and network-effect strength.
Core Workflows
Workflow 1: Marketplace Health Diagnostic
- Capture key metrics: GMV, take rate, supply, demand, fill rate, repeat rate
- Run:
python scripts/marketplace_health_scorer.py metrics.json - Identify which dimension is the constraint (usually one of: not enough supply, not enough demand, low repeat, weak liquidity, take rate too high or too low)
- Plan one focused intervention; don't try to fix all five at once
Time Estimate: 2-4 weeks per diagnostic.
Workflow 2: Chicken-and-Egg Strategy
- Read
references/marketplace_dynamics.md - Identify your "constrained side" (usually supply for new marketplaces)
- Pick a strategy: subsidize the constrained side, single-player mode, vertical wedge, geographic concentration
- Measure liquidity in the smallest viable unit (one city, one category, one buyer segment)
Time Estimate: 6-12 months for first liquid segment.
Workflow 3: Take-Rate Decision
- Read
references/take_rate_design.md - Benchmark category norms (eBay 10-13%, Airbnb 14%, Uber 25-30%, Etsy 6.5%, vertical B2B varies)
- Decide: high take rate (full-stack with lots of value-add) vs. low take rate (commodity matching)
- Plan trajectory: most marketplaces raise take rate over time as value-adds compound
Time Estimate: 4-8 weeks for first take-rate decision.
Show full SKILL.md (214 more words)Show less
Tools
marketplace_health_scorer.py
Scores marketplace health on five dimensions: liquidity, balance, take-rate sustainability, repeat-rate strength, and supply density.
python scripts/marketplace_health_scorer.py metrics.json
python scripts/marketplace_health_scorer.py metrics.json --jsonReference Guides
references/marketplace_dynamics.md— Chicken-and-egg, liquidity, network effects, vertical / horizontal trade-offsreferences/take_rate_design.md— Take rate benchmarks, when to raise / lower, full-stack vs lean
Templates
assets/marketplace_metrics_template.json— Input file for the health scorer with example values
Best Practices
- Liquidity over GMV. A marketplace with $10M GMV across 1,000 cities is mostly broken; the same GMV in 5 cities can be liquid and growing.
- Pick a wedge. New marketplaces almost always start narrow (single city, single category, single segment) and expand.
- Measure repeat early. Marketplaces without repeat are often serving as infrastructure for off-platform transactions (a leakage problem to fix or accept).
- Take rate ratchets up, rarely down. Start low to attract supply; add value-adds (payments, fulfillment, insurance, financing) that justify higher take rate.
- Single-side first when possible. Some categories let you build a tool for one side that becomes a marketplace once liquid (e.g., OpenTable started as restaurant software).
- Beware of weak network effects. Many "marketplaces" lack real network effects — supply on one platform doesn't make demand stickier on that platform. Examine carefully.
Integration Points
- Pairs with
business-growth/pricing-strategy— take rate is essentially marketplace pricing - Pairs with
c-level-advisor/cs-fundraising-advisor— marketplace investor expectations differ from SaaS - Pairs with
marketing/landing-page-generatorfor supply / demand recruitment funnels
© borghei, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files (scripts, references, assets) in vertical-advisors/marketplace-advisor of borghei/Claude-Skills.
- SKILL.md
- assets/marketplace_metrics_template.json
- references/marketplace_dynamics.md
- references/take_rate_design.md
- scripts/marketplace_health_scorer.py
Open the folder on GitHubat commit 4a698e8
Compare with similar skills
Marketplace Advisor 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Marketplace Advisor this skillborghei/Claude-Skills | 891 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Idea Refinementaddyosmani/agent-skills | 104k | 6 repos | ~2k | Automated safety check: Pass | MIT | |
| HTML PPT Studiolewislulu/html-ppt-skill | 8.6k | 4 repos | ~4.7k | Automated safety check: Pass | MIT | |
| Agent Browserquran/quran.com-frontend-next | 1.9k | 40 repos | ~3.3k | Automated safety check: Pass | None | |
| Dependency Watchtelegramdesktop/tdesktop | 33k | 1 repos | ~2.2k | Automated safety check: Pass | GPL-3.0 | |
| Perform Tasktelegramdesktop/tdesktop | 33k | 2 repos | ~3k | Automated safety check: Pass | GPL-3.0 |
Similar skills
HTML PPT Studio
lewislulu/html-ppt-skill
Authors static HTML presentations from a library of themes, layouts and animations, with keyboard navigation, for talks, pitch decks and reports.
Agent Browser
quran/quran.com-frontend-next
Automates browser interactions for web testing, form filling, screenshots, and data extraction.
Dependency Watch
telegramdesktop/tdesktop
Audit Telegram Desktop dependencies on freshly fetched origin/dev for releases and security fixes, including upstream lag and backport candidates in patched forks.
Perform Task
telegramdesktop/tdesktop
Resolve, start or resume, implement, review, test, and publish exactly one existing ai-tdesktop task by short slug or full dated id, including rare blocked retries and split-required results.
Brave Search
badlogic/pi-skills
Web search and content extraction via Brave Search API. An agent skill from badlogic/pi-skills.
More from borghei/Claude-Skills
All 354 skills in this repoAgent Harness
borghei/Claude-Skills
Test and evaluation harness for AI agents — scenario suites, deterministic replay, regression diffing, cost and latency budgets.
Agents In The Team
borghei/Claude-Skills
Run delivery when AI coding and ops agents take tickets. An agent skill from borghei/Claude-Skills.
AI Content Disclosure
borghei/Claude-Skills
Check AI-generated marketing content and reviews for required disclosures under the EU AI Act, FTC rules and platform AI-label policies.
AI Prototyping
borghei/Claude-Skills
Idea to AI-generated prototype to customer validation to engineering handoff.
Analytics Engineer
borghei/Claude-Skills
Analytics engineering across data modeling, dbt, transformation, and semantic layers.
Ansoff Matrix
borghei/Claude-Skills
Ansoff Matrix — 4-quadrant framework for growth options: market penetration, market/product development, and diversification.
Questions about Marketplace Advisor
What does Marketplace Advisor do?
Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects. Marketplace Advisor is an agent skill from borghei/Claude-Skills. Strategic advisory for two-sided marketplace founders on chicken-and-egg, take rates, liquidity, and network effects.
When should I use Marketplace Advisor?
Marketplace Advisor fits situations like: scoping a marketplace idea; mentioning marketplace; network effects.
How do I install Marketplace Advisor in Claude Code?
Run `npx skills add borghei/Claude-Skills --skill marketplace-advisor -a claude-code`. Or copy the skill folder (vertical-advisors/marketplace-advisor in borghei/Claude-Skills) into .claude/skills/marketplace-advisor in your project. Claude Code loads it when a task matches its description.
How do I install Marketplace Advisor in Codex?
Run `npx skills add borghei/Claude-Skills --skill marketplace-advisor -a codex`. Or copy the skill folder (vertical-advisors/marketplace-advisor in borghei/Claude-Skills) into .agents/skills/marketplace-advisor in your project. Codex loads it when a task matches its description.
Can I use Marketplace Advisor 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 borghei/Claude-Skills --skill marketplace-advisor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/marketplace-advisor, .gemini/skills/marketplace-advisor, .github/skills/marketplace-advisor and .opencode/skills/marketplace-advisor in your project.
What does Marketplace Advisor need to run?
Going by SKILL.md and its folder, Marketplace Advisor needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Marketplace Advisor 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 Marketplace Advisor 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Marketplace Advisor use?
Marketplace Advisor is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Marketplace Advisor use?
About 1.3k tokens (SKILL.md is roughly 5.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.7k tokens, read only when the agent opens those files.
What are the alternatives to Marketplace Advisor?
Skills that share tags, products or a category with Marketplace Advisor: Idea Refinement (addyosmani/agent-skills, 104k stars), HTML PPT Studio (lewislulu/html-ppt-skill, 8.6k stars), Agent Browser (quran/quran.com-frontend-next, 1.9k stars) and Dependency Watch (telegramdesktop/tdesktop, 33k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Marketplace Advisor?
borghei (a GitHub user) maintains it in borghei/Claude-Skills, which has 891 GitHub stars. The repository holds 354 skills in this directory. The repository was last updated on October 7, 2026.
Source: borghei/Claude-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.