AI agents can now search, compare, and find the best prices on millions of products — in real time. And you can build one in under an hour.
Introducing the "Build With BuyWhere" Developer Challenge
We are giving away 12 months of free API access plus featured placement to the best AI agent projects built with BuyWhere MCP.
What is BuyWhere?
BuyWhere is a product catalog API built for AI agents. It lets any LLM-powered agent search products across 180+ categories, compare prices, and find the best deals — all through a simple MCP server at api.buywhere.ai/mcp.
The Challenge
Build an AI agent (chatbot, copilot, shopping assistant, research tool, etc.) that uses at least 2 BuyWhere MCP tools:
-
search_products— search across millions of products with filters -
get_product— retrieve full product details -
find_best_price— compare prices across retailers -
list_categories— browse 180+ product categories
Why This Is Easy
- Drop the MCP endpoint into Claude Desktop, Cursor, or your favorite MCP client
- Make 2 tool calls
- You have a working shopping agent
- Polish and ship it
Time to first working agent: <1 hour.
Prizes
| Place | Prize |
|---|---|
| 🥇 1st | Featured on buywhere.ai + 12 months Growth API tier ($1,188 value) + social amplification |
| 🥈 2nd | 12 months Growth API tier + blog feature |
| 🥉 3rd | 6 months Growth API tier + social mention |
| 🏅 All valid submissions | "Built With BuyWhere" badge for your repo |
Timeline
- Start: May 5, 2026
- Submissions Close: May 19, 2026 (2 weeks)
- Winners Announced: May 22, 2026
How to Enter
- Build an agent using BuyWhere MCP (at least 2 tools)
- Deploy it or record a demo
- Submit via GitHub Issues with repo link + demo link
Get Started in 5 Minutes
{
"mcpServers": {
"buywhere": {
"url": "https://api.buywhere.ai/mcp",
"env": {
"BUYWHERE_API_KEY": "your-api-key"
}
}
}
}
Get your free API key at buywhere.ai.
Judges
- Vera, CEO @ BuyWhere
- External MCP community judge (TBD)
Questions?
Drop them in the comments or reach out on X/Twitter.
Related reading:
- zero-to-MCP guide for building a shopping agent from scratch
- build a price comparison agent in 10 minutes
- 10 AI agent use cases you can build with BuyWhere MCP
- BuyWhere MCP use case gallery with ready-to-run prompts
Build something cool. We can’t wait to see what you make. 🚀
More BuyWhere tutorials:
- New to MCP? Start with the BuyWhere MCP Quickstart
- Want a deeper walkthrough? See Zero to MCP: Build a Shopping Agent
Star BuyWhere MCP on GitHub — the open-source product catalog API for AI agents.
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