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CartScout

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Live product prices, stock, variants and deal ratings from Shopify, Walmart, eBay and more.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package cartscout-mcp
Claude Code 
claude mcp add cartscout -e 'RAPIDAPI_KEY=<your rapidapi_key>' -e 'CARTSCOUT_RAPIDAPI_HOST=cartscout-api.p.rapidapi.com' -- uvx cartscout-mcp==0.1.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "cartscout": {
            "command": "uvx",
            "args": [
                "cartscout-mcp==0.1.0"
            ],
            "env": {
                "RAPIDAPI_KEY": "<your rapidapi_key>",
                "CARTSCOUT_RAPIDAPI_HOST": "cartscout-api.p.rapidapi.com"
            }
        }
    }
}

Environment variables

  • RAPIDAPI_KEY required secret Your RapidAPI key for CartScout. The free plan includes 300 extractions a month.
  • CARTSCOUT_RAPIDAPI_HOST RapidAPI host of the CartScout API.

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. CartScout MCP server
  2. Tools
  3. Setup
  4. Example prompts
  5. Configuration
  6. Good to know
  7. Development
  8. License

CartScout MCP server

Give Claude, Cursor or any MCP-capable AI agent live product prices, stock, variants and deal ratings from online stores. Paste a product link into the chat and ask "is this a good price?", "which of these three stores is cheapest and in stock?" or "does it come in size 10?".

Works with Shopify, WooCommerce, Walmart and eBay stores, with Amazon in beta. The data comes from the CartScout API, which handles fetching, bot filters and parsing. Try the API in your browser first, no sign-up needed.

Tools

ToolWhat the agent getsUses
get_productPrice, list price and discount, stock, variants (sizes, colours) with their own price and stock, SKU / GTIN, rating, optional reviews and description1 extraction
compare_products2-10 pages ranked: cheapest, cheapest in stock, best rated, biggest discount, price spread, same product by GTIN1 extraction per URL, PRO plan or higher
check_dealDeal rating of the current price against its recorded history, with average, lowest and highest price1 extraction (or none with refresh: false)
get_price_historyRecorded price and stock changes with current, lowest and highest priceNo extractions

Every tool is read-only and returns structured JSON with an output schema. Responses are trimmed for agents: bulky parts such as all variants, reviews and the description are included only when the agent asks for them.

Setup

  1. Subscribe to CartScout on RapidAPI. The free plan includes 300 extractions a month: plans.
  2. Copy your X-RapidAPI-Key from the RapidAPI dashboard.
  3. Add the server to your client. It runs with uv, which installs it on first use.
Claude Code
claude mcp add cartscout -e RAPIDAPI_KEY=your-rapidapi-key -- uvx cartscout-mcp
Claude Desktop

Settings → Developer → Edit config, then add:

{
  "mcpServers": {
    "cartscout": {
      "command": "uvx",
      "args": ["cartscout-mcp"],
      "env": { "RAPIDAPI_KEY": "your-rapidapi-key" }
    }
  }
}
Cursor

Add the same mcpServers block to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (one project).

Example prompts

CartScout reads product pages; it does not search stores. Give the agent product URLs, or let it find them with a web search tool first.

Configuration

VariableDefaultPurpose
RAPIDAPI_KEYrequiredYour RapidAPI key
CARTSCOUT_RAPIDAPI_HOSTcartscout-api.p.rapidapi.comRapidAPI host of the API
CARTSCOUT_API_URL, CARTSCOUT_API_KEYunsetUse a directly issued CartScout key instead of RapidAPI

The server sends only the product URLs your agent asks about to the CartScout API. Without a key it still starts and lists its tools (handy for MCP inspectors); each tool call then explains how to add RAPIDAPI_KEY.

Docker
docker build -t cartscout-mcp .
docker run -i --rm -e RAPIDAPI_KEY=your-rapidapi-key cartscout-mcp
HTTP transport

cartscout-mcp --transport streamable-http --port 8000 serves the tools at http://127.0.0.1:8000/mcp. Every client connected to it uses the key from the environment, so keep it on a private address.

Good to know

  • Prices follow each store's own region and currency.
  • Results can be cached for up to 60 minutes (cached: true).
  • Price history and deal ratings build up as products are read. A product seen for the first time has little history to compare against.
  • History range depends on the plan: 14 days on the free plan, up to 365 days on MEGA.
  • When a store blocks a request, the tool returns an error explaining it, and the failed request is not billed.

Development

uv sync
uv run pytest

License

MIT

Frequently asked questions

What is CartScout?

Live product prices, stock, variants and deal ratings from Shopify, Walmart, eBay and more.

How do I install CartScout?

It runs on your machine. In Claude Code: claude mcp add cartscout -e 'RAPIDAPI_KEY=<your rapidapi_key>' -e 'CARTSCOUT_RAPIDAPI_HOST=cartscout-api.p.rapidapi.com' -- uvx cartscout-mcp==0.1.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does CartScout need an API key?

Yes. It expects RAPIDAPI_KEY, which you set in its configuration.

Is CartScout open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains CartScout?

It is published by Veselin15. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.