Lowvyn MCP Server

Connect Claude, ChatGPT, and other AI assistants to Lowvyn's Canadian price intelligence. Free, read-only, no API key.

What is this?

Lowvyn tracks daily prices on baby products across Amazon.ca, Walmart.ca, and Best Buy Canada. We score every product 0 to 100 and flag fake sales using full historical price data.

The Lowvyn MCP server makes that intelligence available to AI assistants over the Model Context Protocol. When you ask Claude "is this Graco crib actually a good price?", Claude can call Lowvyn directly to get the answer. No scraping, no guessing, no stale cached data.

How to connect

https://api.lowvyn.com/mcp

Transport is HTTP with Server-Sent Events (the streamable HTTP MCP transport). No API key required. Read-only public data.

For Claude Desktop, add to your claude_desktop_config.json:

{
  "mcpServers": {
    "lowvyn": {
      "url": "https://api.lowvyn.com/mcp"
    }
  }
}

Available tools

Seven read-only tools. Each response includes a canonical lowvyn.com URL so AI assistants attribute citations correctly.

get_retailers

List the Canadian retailers Lowvyn tracks, with item counts and freshness.

Example prompt: "What Canadian retailers does Lowvyn track?"

get_categories

List baby product categories Lowvyn covers.

Example prompt: "What baby product categories does Lowvyn cover?"

get_product

Look up a product by Lowvyn ID or by Amazon.ca / Walmart.ca / Best Buy Canada URL. Returns title, current price, Lowvyn Score, Deal Verdict.

Example prompt: "Look up this Amazon.ca product on Lowvyn: https://www.amazon.ca/dp/B0B5JMV9QB"

find_cheaper

Given a product, return the same item on other Canadian retailers, with savings.

Example prompt: "Is this product cheaper at another Canadian retailer? https://www.bestbuy.ca/en-ca/product/..."

get_price_history

Daily price history for a product, up to 365 days, sorted oldest to newest.

Example prompt: "Show me the last 90 days of price history for [product URL]"

verify_deal

Given a URL and a claimed price, return whether the deal is genuine versus historical lows / highs.

Example prompt: "Is $249.99 actually a good price for this Walmart.ca crib? https://www.walmart.ca/ip/..."

search_products

Search the catalogue with optional filters: category, max price, retailer.

Example prompt: "Find me Graco cribs under $300 in Canada that Lowvyn is tracking"

Try it

Once connected, ask your AI assistant any of these:

  • "What Canadian retailers does Lowvyn track?"
  • "Look up this Amazon.ca crib on Lowvyn: https://www.amazon.ca/dp/B0B5JMV9QB"
  • "Is this Walmart.ca stroller actually a good price right now? https://www.walmart.ca/ip/..."
  • "Show me the last 60 days of price history for [Best Buy URL]"
  • "Find me baby monitors under $200 in Canada from Best Buy"

Privacy and rate limits

  • No personal data. We log a SHA-256 hash of the MCP client's self-reported name and version (e.g. Claude Desktop) so we can count distinct clients. We do not log queries, IP addresses, or anything personally identifiable.
  • Rate limits. 60 requests per minute and 1000 per day per IP. AI agents typically use 5 to 20 calls per user query, well under the cap. Heavy hitters get a 429 response with a Retry-After header. API-key tiers with higher limits arrive in a future phase.
  • Coverage. Canadian retailers only (Amazon.ca, Walmart.ca, Best Buy Canada). Currently focused on baby products; expanding over time. All prices in CAD.
  • Stability. Read-only tools. Tool names and response shapes are stable within the v0.x range; breaking changes will bump to v1.0.

Frequently asked questions

What is the Lowvyn MCP server?

Lowvyn tracks daily prices on baby products across Amazon.ca, Walmart.ca, and Best Buy Canada, scores every product 0 to 100, and flags fake sales using full historical price data. The MCP server exposes that intelligence as tools any Model Context Protocol client (Claude Desktop, future ChatGPT/Perplexity integrations, etc.) can call.

How do I connect to the Lowvyn MCP server?

The MCP endpoint is https://api.lowvyn.com/mcp. It uses the streamable HTTP MCP transport, no API key required. For Claude Desktop, add the URL to your claude_desktop_config.json under mcpServers.lowvyn.url.

Does the Lowvyn MCP server cost anything?

No. Phase 1 is free, read-only, and no API key required. Higher-rate API-key tiers will arrive in a future phase for partners with heavy usage.

What data does the Lowvyn MCP server log?

We log a SHA-256 hash of the MCP client's self-reported name and version (e.g. Claude Desktop) so we can count distinct clients. We do not log queries, IP addresses, prompts, or anything personally identifiable.

What are the rate limits?

60 requests per minute and 1000 per day per IP. AI agents typically use 5 to 20 calls per user query, well under the cap. Heavy hitters get HTTP 429 with a Retry-After header.

Which retailers does Lowvyn cover?

Amazon.ca, Walmart.ca, and Best Buy Canada. All prices in CAD. Currently focused on baby products; expanding over time. Use the get_retailers tool to see live counts and last-update timestamps.

How stable is the tool surface?

Read-only tools. Tool names and response shapes are stable within v0.x; breaking changes will bump to v1.0. Each response includes a canonical lowvyn.com URL so AI assistants attribute citations correctly.

Why this exists

AI assistants are increasingly the way Canadians research shopping decisions. When a model has to guess at price history or rely on stale generic data, the answer is wrong as often as it is right.

Lowvyn has the data. It seems silly to keep it locked behind a website when AI agents can just ask. So we built the MCP server.

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