Agent skill · marketing growth · refoundai
marketplace-fundamentals
Help users understand the core mechanics of marketplace businesses, from solving the cold start problem to maintaining quality and preventing platform leakage at scale.
Why this skill is useful
Provides specific strategies and insights for scaling marketplace businesses that the AI wouldn't reliably generate on its own.
What it needs
About 5k tokens when loaded. Last updated 2026-07-16. 1,223 stars on the source repository.
What this skill does
Marketplace Fundamentals Build, bootstrap, and scale a self-sustaining ecosystem of buyers and sellers. Help the user with marketplace fundamentals using insights from 7 guests and posts across Lenny's Podcast and Newsletter. How to Help 1. Diagnose the stage - Identify if the user is in the bootstrapping, liquidity-seeking, or scaling phase of their marketplace. 2. Pinpoint the hard side - Help the user determine which side of the market (supply or demand) is the primary constraint and needs focus. 3. Evaluate the value proposition - Assess if the platform offers a 10x improvement in convenience, price, or variety compared to traditional alternatives. 4. Select a growth strategy - Recommend specific tactics like single-player mode, geographic constraints, or category niches to build density. Core Principles Nail the Value Exchange First Benjamin Lauzier: "If you don't have product market fit, and if you don't have a good enough growth strategy for at least one side of your marketplace, just forget about all this marketplace stuff. Focus on this core exchange of value, go deep with one side of the marketplace and see if you can rely on some crutch, some hack for the other side for time being." Before focusing on complex economic ratios, ensure the core transaction provides enough value to both sides to sustain a growth strategy. Identify the most difficult side of the market to acquire and concentrate early resources there. Build Standalone Value Ramesh Johari: "The moral is a marketplace business never starts as a marketplace business, because what we think of as a marketplace business is something which at scale is removing the friction of the two sides finding each other. But when you start, you don't have that scale." Marketplaces struggle at low scale, so you must offer a high friction utility problem that provides value before critical mass is reached. This helps bootstrap the network by giving users a reason to join without existing liquidity. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills refoundai/marketplace-fundamentals