
TOOLSWAP
OVERVIEW
Development of a two-sided marketplace for the U.S. market — a platform for professionals and DIY enthusiasts to buy, sell, and exchange tools. Project in collaboration with “WeAreBrain” agency.
VIEW THE SITE
DESIGN MUST-HAVES FOR A SPECIALIZED TRADING PLATFORM
- •Use of red — the platform should evoke a sense of quality, reliability, and professionalism, similar to other well-known trading marketplaces.
- •Clean, minimalist design.
- •Familiar layout — intuitive for users of other trading platforms but without being a copy.
- •Support for user-uploaded product photos in various proportions, even if they’re not perfectly styled.
- •No typical e-commerce elements like discount pop-ups or “Buy Now” buttons in product listings.
- •No advertising banners.
- •No third-party ads.

ANALYTICAL PART OF THE MARKETPLACE DEVELOPMENT
At the start of the project, our partners at WeAreBrain provided all the necessary documentation and detailed descriptions of the desired features, which allowed us to implement a feature-by-feature approach in development. We also want to highlight the outstanding work of the entire WeAreBrain team — any issues that arose during development were resolved quickly and smoothly.
After a thorough analysis of the “Buy or Build” options, we decided in favor of custom platform development to deliver the best user experience in a two-sided marketplace, where users can seamlessly switch roles between buyer and seller.

MAIN WORKFLOWS ON THE TWO-SIDED MARKETPLACE
- 01.Seller onboarding: a new seller registers on the platform and adds their listings.
- 02.Seller verification (KYC): the seller provides banking and personal information required for KYC via Stripe Connect. They wait for approval before publishing their first listing.
- 03.Listing publication: once approved, the listing appears in the latest listings on the homepage.
- 04.Buyer actions: a buyer visits the marketplace and searches for the desired product. Payment is processed via Stripe Connect. Buyers can view their orders in the Ordered list.
- 05.Notifications and order fulfillment: the seller receives an email notification about a new order. The order appears on the My Details page, where the seller can prepare a generated shipping label.
- 06.Admin control: the administrator can view all listings and monitor platform activity.

THAT FEATURE FILE (TECHNICAL SPECIFICATIONS)
Key milestones highlighted by the project manager include:
- 01.Creation of the client dashboard: users can create and manage listings to sell their tools, offering full control over their items.
- 02.Implementation of a specific client taxonomy: this makes it easy and fast for users to understand where and how to add their listings, improving usability and reducing errors.
- 03.Development of multiple shipping mechanisms: different types of shipments were handled with custom tracking systems. 3.1. An algorithm was developed to process orders differently depending on the combination of product cost, delivery cost, and pre-included shipping fees paid by the client, ensuring accurate pricing and smooth order processing.
- 04.Integration with the U.S. delivery service Shippo: users no longer need to manually handle shipping details. By simply clicking a button, the buyer’s information is automatically filled into the shipping label, streamlining the fulfillment process. The system also automatically updates order statuses for both buyers and sellers, keeping everyone informed in real time.
- 05.Payment system integration with automatic fund distribution: payments are automatically divided between the seller and platform owner, with clear notifications sent to each party. This removes the need for manual intervention and ensures transparency and reliability in financial operations.

RESULTS
Overall, developing a two-sided marketplace for trading tools was a dynamic and engaging experience. A special mention goes to our end client, Matthias, who was always eager to participate in discussions and help resolve complex challenges.
Our entire team, working closely with the WeAreBrain team, focused on delivering a result that fully met the client’s needs and expectations. The final product not only satisfied the client but also impressed everyone involved in the development process on the client’s side. 😉
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