BuyWhere MCP Goes Live

BuyWhere is now live as a production MCP server. One command gives any MCP-compatible agent the ability to search 288M+ products, compare live prices, and surface deals across Singapore, Southeast Asia, and the United States. This post is the short version: what it is, why we built it, and how to wire it in.

What it is

BuyWhere is a commerce MCP server. It exposes three core tools that return structured, comparable data:

search_products — keyword, category, price-range, and market-filtered search across Shopee, Lazada, Amazon, Walmart, Carousell, Qoo10, and more.
compare_prices — side-by-side price and availability for a product across merchants, with a best-value pick.
discover_deals — price-dropped and time-limited offers, filterable by market and category.

Every response is a typed object an agent can reason over and pass onward — not prose to parse.

Why we built it

Agents got good at reasoning over text and code, but they're blind to live commerce. A model will happily hallucinate a price; what it can't do is tell you whether the Sony WH-1000XM5 is cheaper on Shopee or Lazada right now, in SGD, in stock. That data is live, fragmented, and behind anti-bot protections. We built the infrastructure — a deduplicated product index, a merchant scraper fleet, a normalization layer — and exposed it as the standard tool surface agents already know how to call.

Why open-source the client

The MCP client is open source (@buywhere/mcp-server on npm, source on GitHub). Open-sourcing the client means:

Auditable — you can read exactly what tools your agent is calling and what data comes back.
Self-hostable — run it where your agent runs, no mystery relay.
Composable — fork and extend; the protocol is standard, your tools can build on ours.

The product index and merchant fleet stay hosted — that's the part that's genuinely expensive to run and where the value compounds — but the interface is open.

How to wire it in

Three steps, under a minute:

# 1. Get a free key (no signup, no email)
curl -X POST https://api.buywhere.ai/v1/auth/register \
  -H "Content-Type: application/json" \
  -d '{"agent_name":"your-agent"}'
# → {"api_key":"bw_...","tier":"unverified","rate_limit":{"daily":1000}}

// 2. Add to your MCP client config (Claude Desktop, Cursor, VS Code, Cline, Windsurf, Codex)
{
  "mcpServers": {
    "buywhere": {
      "command": "npx",
      "args": ["-y", "@buywhere/mcp-server"],
      "env": { "BUYWHERE_API_KEY": "bw_..." }
    }
  }
}

# 3. Ask your agent
"Find me wireless earbuds under $50 available in Singapore, and compare the top 3."
→ [search_products] → [compare_prices] → structured recommendations with links

What works today

288M+ products deduplicated across SG, SEA, and US markets.
Verified clients for Claude Desktop, Cursor, VS Code Copilot, Cline, Windsurf, OpenCode, Codex, and Continue.dev.
Agent-to-Agent (A2A) protocol support.
Free tier: 1,000 calls/day, no credit card.

What's next

The commerce layer is live. The next milestones are depth — more merchants, more markets, richer deal detection — and the ecosystem: agents that don't just search and compare but actually complete purchases end-to-end.

If you're building a shopping agent, a price monitor, or a cross-border comparison tool, the infrastructure is ready. Come build on it.

Get your free key at buywhere.ai/api-keys. Full API docs at docs.buywhere.ai. Source on GitHub.