Kompy offers a powerful Walmart product data API designed for developers and AI agents, providing comprehensive access to the entire Walmart catalog. This service delivers live prices, stock availability, seller information, customer reviews, and an unparalleled full price history, all presented as clean, structured JSON. Whether you're building sophisticated e-commerce tools, conducting market research, or powering AI-driven arbitrage strategies, Kompy provides the reliable data infrastructure you need.
The API is versatile, supporting both traditional REST endpoints and integration with modern AI agent frameworks via an MCP (Multi-Agent Communication Protocol) server. This dual approach ensures that developers can easily integrate Kompy into any language or stack, while AI agents can leverage its capabilities as callable tools with deterministic schemas, small payloads, and structured error handling. The same API key and credits work across both access methods, simplifying usage.
A standout feature of Kompy is its extensive historical data. The platform continuously records the Walmart marketplace around the clock, capturing hourly snapshots of price, stock, and buy-box changes for every tracked SKU. This means users gain access to the full Walmart price history, per seller, dating back to day one – a unique offering not typically found in other Walmart APIs. This granular historical data is invaluable for trend analysis, competitive pricing strategies, and identifying profitable opportunities, such as scanning for clearance items with high ROI potential.
Key API endpoints include:
kompy.product: Retrieve a full product record, including current price, stock status, seller details, and overall rating.kompy.search: Query the live Walmart catalog with advanced sorting and filtering options to find specific products or categories.kompy.history: Access per-seller price and stock history for any given SKU over specified time ranges.kompy.reviews: Fetch customer reviews and ratings for any product, providing insights into consumer sentiment.
Kompy integrates seamlessly with popular AI development environments and tools like OpenClaw, Claude Code, Cursor, LangChain, OpenAI Agents SDK, and n8n, in addition to plain HTTP. This broad compatibility ensures that users can quickly get started, whether they are using a custom stack or established platforms. The API is built for performance, delivering responses in milliseconds, and every response includes a request_id for easy tracing and debugging. With transparent pricing tiers, including a free credit starter, Kompy aims to be an accessible yet robust solution for anyone requiring deep, reliable Walmart data.
