{"protocol":"mcp","protocolVersion":"2025-06-18","transport":"http-jsonrpc","endpoint":"https://grundpreis.halowerk.com/mcp","server":{"name":"grundpreiswerk","title":"HALOWERK grundpreiswerk - grocery unit prices","version":"1.0.0"},"methods":["initialize","ping","tools/list","tools/call"],"tools":[{"name":"grocery_unit_price","title":"Unit price per kg or litre for a grocery pack: give a price and a quantity text like \"6 x 0,33 l\" or an EAN, get EUR per kg/l and per 100 g/ml.","price_usdc":0.002},{"name":"grocery_pack_compare","title":"Which pack is cheapest per kg or litre? Compare 2 to 20 packs by unit price; give price plus quantity text or EAN for each.","price_usdc":0.002},{"name":"grocery_pack_size","title":"Pack size and product data for a grocery barcode (EAN) sold in Germany or Austria: declared quantity, normalised kg/l, brand, category and labels.","price_usdc":0.002},{"name":"grocery_category_unit_prices","title":"Unit-price spread of a grocery category in Germany or Austria: median, quartiles and the cheapest observed products per kg or litre.","price_usdc":0.002}],"payment":{"protocol":"x402","network":"eip155:8453","asset":"USDC","note":"tools/list braucht keine Zahlung. tools/call rechnet den Werkzeugpreis über x402 ab."}}