Every pricing tool I tried gives *asking* prices. For resale that's noise — what actually matters is what things **sold** for. So I built Grail: feed it any product keyword, get real eBay **completed/sold** listings back as clean JSON — up to 240 per call, with final price, date, condition, shipping, URL, plus median/mean/min/max. • Horizontal — any product, not just cards • Free key, no OAuth, no eBay app ID • REST API + an MCP server for agents • Sold prices only, never listings It's early and I'm the solo founder. Cards were the entry point, but the API is general-purpose. Would love feedback: what would you want in the response schema, and what's missing for your use case? grail.solutions   submitted by   /u/Downtown_Weather_883 [link]   [comments]