# Cart

> E-commerce intelligence API for AI agents and developers.

Cart provides e-commerce data (stores, products, ads, traffic, and sales) through a REST API, TypeScript SDK, MCP server, and Claude Code skills. 100K+ stores monitored, 1M+ products tracked.

## Docs

- [API Documentation](https://docs.usecart.com): Full endpoint reference, authentication, and usage guides
- [GitHub](https://github.com/FlatNineOrg): Open-source SDK, MCP server, and skills

## API

- [API Base URL](https://api.usecart.com/v1): REST API with Bearer token auth (`cart_sk_` keys)
- [Developer Portal](https://usecart.com/developers): Get your API key

## SDKs and Tools

- [TypeScript SDK](https://github.com/FlatNineOrg/cart-sdk): `npm install @usecart/sdk` - zero-dependency client
- [MCP Server](https://github.com/FlatNineOrg/cart-mcp): `npx @usecart/mcp-server` - for Claude Desktop and MCP clients
- [Claude Code Skills](https://github.com/FlatNineOrg/ecommerce-skills): `npm install -g @usecart/skills` - 9 pre-built e-commerce skills

## Free Tools

- [Store Analyzer](https://usecart.com/tools/store-analyzer): Full report card for any Shopify store
- [Theme Detector](https://usecart.com/tools/theme-detector): Identify which Shopify theme a store uses
- [Tech Stack Checker](https://usecart.com/tools/tech-checker): Discover apps and technologies a store uses
- [Revenue Estimator](https://usecart.com/tools/revenue-estimator): Estimate monthly revenue for any Shopify store
- [Ad Spy](https://usecart.com/tools/ad-spy): Preview Facebook and Instagram ads from any store
- [Niche Finder](https://usecart.com/tools/niche-finder): Discover profitable Shopify niches

## Pricing

- [Pricing](https://usecart.com/pricing): Free tier (100 req/day), Pro $49/mo (10K req/day), Business $199/mo (100K req/day), Enterprise (custom)

## About

- [About](https://usecart.com/faq): Indie-built by one person in Italy since 2019
- [Support](mailto:support@usecart.com): Email support