Kompy

Kompy is a developer-focused ecommerce data API for the Walmart catalog. It returns live product, price, stock, seller, rating, review, and price-history data as structured JSON. The same API is available over documented HTTP endpoints and a first-party MCP server, so applications, automations, and AI agents can query shopping data with one API key and credit balance. Kompy says Walmart is the current marketplace focus, with more marketplaces planned.

✨ Key Features

• Walmart product records — Retrieve product details, brand, price, currency, stock, rating, review count, seller, and capture metadata.
• Live catalog search — Search the catalog with query, sort, and filter parameters.
• Price and stock history — Inspect historical price, stock, and buy-box changes for tracked SKUs.
• Per-seller history — Compare offer and availability history at seller level.
• Review and rating data — Retrieve customer reviews and ratings for a product.
• REST API — Call documented HTTP endpoints from any language without requiring an SDK.
• MCP server — Expose product, search, history, and review operations as callable tools for agents.
• Structured JSON responses — Receive predictable response shapes with request IDs and latency metadata.
• Agent compatibility — Connect through MCP to OpenClaw, Claude Code, Cursor, LangChain, OpenAI Agents SDK, n8n, or another compatible stack.
• Credit-based usage — Use the same credits across REST and MCP requests, with limits and overage rules depending on the plan.
• Developer documentation — Use API documentation, examples, OpenAPI material, and endpoint references to integrate the service.

💳 Pricing

• Free starting credits — Every account starts with evaluation credits; the public page does not specify a recurring free quota or the starter amount. Continued usage is covered by paid plans.
• Hobby — $25.99/month with 7,000 credits/month, API and MCP access, and email support.
• Pro — $149.99/month with 45,000 credits/month, API and MCP access, and priority support.
• Business — $499.99/month with 180,000 credits/month, API and MCP access, priority support, and custom integrations.

The official page also shows plan-specific concurrency, rate limits, overage pricing, and credit caps in the detailed comparison. Credit consumption, limits, and marketplace coverage can change; confirm the live pricing page before subscribing.

⚖️ Alternatives Compared

🎯 Use Cases

• Price monitoring — Track Walmart product prices and seller offers over time.
• Retail arbitrage research — Search clearance items and compare purchase prices with resale targets.
• Repricing analysis — Use historical offers and buy-box changes to inform pricing decisions.
• Shopping intelligence agents — Let an MCP-compatible agent answer product and availability questions.
• Ecommerce dashboards — Feed structured catalog data into internal analytics or reporting tools.
• Inventory and availability alerts — Watch stock changes for selected products or sellers.
• Marketplace research — Compare product ratings, reviews, sellers, and price movement programmatically.
• Prototype data products — Build an application on predictable JSON without operating a scraper yourself.

Verify current features, pricing, rights, data coverage, and limits on the official product pages before relying on this listing.