MerchantWords vs ScanUnlimited

MerchantWords provides Amazon keyword research, search-volume estimates, competitive analysis, and related e-commerce optimization tools. Classic Search shows estimated monthly volume, 12-month seasonality, related terms, and keyword depth and strength across Amazon marketplaces. ASIN Plus finds keywords a product ranks for when given its ASIN, while Product Tracker follows Amazon keyword rankings daily. Other tools include Collections, Emerging Trends, Keyword Explorer, Keyword Multiplier, Page 1 Products, and Bulk Search. MerchantWords says its keyword data comes from Amazon’s autocomplete search bar, and describes its volume and keyword figures as estimates without guaranteeing absolute accuracy. Collections can be exported as CSV files for listings and ad campaigns. Data is available through REST and MCP; the MCP page lists Claude Desktop, Claude Code, Cursor, VS Code Copilot, and compatible agent frameworks. A free API demo provides real data for a fixed set of terms without an account. Paid plans start at $35/mo. The Silver plan includes 500 searches, while Gold includes 1,000; Platinum and Enterprise list unlimited searches.

ScanUnlimited has no write-up on Specifiction yet; its figures are above.