> ## Documentation Index
> Fetch the complete documentation index at: https://docs.proofofplay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Marketplace API

> Support peer-to-peer trading within a game or app. Works across both onchain and offchain inventory systems.

<b>How does the Proof of Play Marketplace work?</b>

Overview:

* Our APIs allow app developers to build an in-game marketplace and take a fee.
* Sellers can list items for sale from their inventory priced in USD.
* Buyers can purchase item listings via credit card or crypto.
* Purchased items are placed in the buyer’s inventory upon fulfillment.
* Sellers are paid out in USD stablecoins in their wallets upon settlement.
* Players can withdraw their balances into fiat across many supported payment methods.

Diagram:

<img src="https://mintcdn.com/proofofplay/rbspQftYY4rOy-3J/images/marketplace/marketplace-architecture.png?fit=max&auto=format&n=rbspQftYY4rOy-3J&q=85&s=a255d10ca0149de2146d8ebc9f5b0bf9" alt="Marketplace Flow" width="1920" height="1080" data-path="images/marketplace/marketplace-architecture.png" />

<b>Why should you be interested as an app developer?</b>

* With just a simple integration, you can quickly stand up a marketplace that works with your existing databases and inventory systems.
* Your app doesn’t need any crypto or have plans to use it in the future. It’s only the marketplace payments that settle on a crypto network.
* You can generate additional revenue & increase LTVs.
* Most importantly, your users get the very best in-game marketplace UX and can participate in real-money, peer-to-peer trading.

<b><i>Reach out to us if you’d like to be part of the closed alpha at: [partnerships@proofofplay.gg](mailto:partnerships@proofofplay.gg).</i></b>