{"type":"firestarter.listing","listing":{"id":"lst_fQRCX96-","product_name":"CfM Ruby","category":null,"description":"This lovely, complex blend features five of our core collection colors: some bright, some deep, and all opaque. Among our reds, Ruby fits right in the middle between French Vermilion (which is brighter and closer to the orange scale), and Primary Red (which is cooler with blue undertones). Like the gemstone, our Ruby is multi-faceted—the perfect color for capturing everything from berry fruit-leather to a Cardinal’s winter plumage, or the Golden Gate Bridge at sunset!\nThis color contains fluorescent pigment, which is not lightfast. Fading can be reduced by coating finished pieces in a UV protective varnish and/or keeping them out of direct sunlight.\nAll of our watercolors are handmade in our shop using the highest quality earth and synthetic pigments, plus natural watercolor binding medium made from gum arabic (sap from acacia trees), honey, glycerine, distilled water, and a dash of clove oil for freshness!\nHalf Pans measure ~3/4\" x 1/2\" x 3/8\" and contain ~2ml of paint.\nOur custom blended colors don't have a Color Index number, as they consist of a unique blend of two or more pigments.  All of our watercolors conform to ASTM D-4236.","images":["https://cdn.shopify.com/s/files/1/0631/2017/9426/products/cfm-ruby.jpg?v=1653564933","https://cdn.shopify.com/s/files/1/0631/2017/9426/products/cfm-ruby-Square.jpg?v=1653565805","https://cdn.shopify.com/s/files/1/0631/2017/9426/files/Watercolor_Half_Pan_Trio.jpg?v=1773278386"],"price":12,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.107Z"},"share_url":"https://firestarter.network/l/lst_fQRCX96-","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_fQRCX96-' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy CfM Ruby' and a budget_max comfortably above $12.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}