buywhere-mcp

MCP server for the BuyWhere product catalog. Lets Claude Desktop, Cursor, Windsurf, and other MCP-compatible agents search and retrieve products without writing any HTTP code.

Setup

1. Get your API key

Sign up at buywhere.ai/developers and copy your API key.

2. Configure your client

Claude Desktop

Open ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows) and add:

{
  "mcpServers": {
    "buywhere": {
      "command": "python",
      "args": ["mcp_server.py"],
      "env": {
        "BUYWHERE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Cursor

Open Settings → MCP and add a new server, or edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "buywhere": {
      "command": "python",
      "args": ["mcp_server.py"],
      "env": {
        "BUYWHERE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Windsurf

Edit ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "buywhere": {
      "command": "python",
      "args": ["mcp_server.py"],
      "env": {
        "BUYWHERE_API_KEY": "your_api_key_here"
      }
    }
  }
}

3. Ask your agent to search products

Restart your client, then try:

"Search BuyWhere for wireless earbuds under $50 in Singapore"

"Use BuyWhere to compare the cheapest iPhone 15 cases"

"Get me the affiliate link for product ID abc123 from BuyWhere"

Related MCP server: MCP Merchant Scout

Tools

search_products

Search the BuyWhere catalog using keywords or natural language.

get_product

Fetch full details for a single product.

get_price

Compare current prices for a product across all available merchants. Returns listings ranked by total price (including shipping), plus best-price and best-value recommendations.

compare_prices

Side-by-side comparison of 2–5 products. Returns structured differentiators, price range, pros/cons, and a best-value recommendation — purpose-built for AI agent decision-making.

get_affiliate_link

Get the click-tracked BuyWhere affiliate link for a product. Always use this instead of raw product URLs when sharing links with users — it logs the referral and redirects to the merchant page.

get_catalog

List available product categories. Use this to discover what categories exist before searching or filtering.

Resources

Environment variables

Sample agent conversation

User: Find the cheapest mechanical keyboard on BuyWhere and compare the top 2

Claude: I'll search BuyWhere for mechanical keyboards and compare the top results.

[Calls search_products with query="mechanical keyboard", limit=5]

Found 12 products. Top results:
1. Keychron K2 — SGD 89.00 (prod_abc123)
2. Royal Kludge RK61 — SGD 65.00 (prod_def456)

[Calls compare_prices with product_ids=["prod_abc123", "prod_def456"]]

Comparison: Keychron K2 vs Royal Kludge RK61
Price range: SGD 65 – SGD 89
Key differences:
  • Keychron K2: full-size TKL layout, Mac-optimised keycaps
  • RK61: compact 60% layout, budget-friendly
Best value: Royal Kludge RK61 at SGD 65

[Calls get_affiliate_link with product_id="prod_def456"]

Here's your purchase link: https://api.buywhere.ai/r/prod_def456

Development

npm install
npm run build
BUYWHERE_API_KEY=your_key python mcp_server.py