{"type":"firestarter.listing","listing":{"id":"lst_P5-PLypj","product_name":"Ultramarine Red. Half pan or bottle cap of handmade ultramarine red watercolor paint","category":"watercolor paint","description":"This is such a versatile and unique color! Not quite purple, not quite pink, Ultramarine Red is great for mixes and for layering. This hue mixes with other colors in surprisingly versatile ways.\n\nColor index: Pv259\nLightfastness: excellent\nTransparency: Semi\nTinting Strength: average\nToxicity: Non-toxic\nShimmer: no\n\n \nA small magnet can be added to the pan or cap, at no cost, to allow it to stick to any metal tin. ","images":["https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2090703620_6tkb.jpg?v=1639430980","https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2090702668_iyfe.jpg?v=1639430983","https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2090702884_nevr.jpg?v=1639430985","https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2138266405_3yoi.jpg?v=1639430987","https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2090703366_lag1.jpg?v=1639430990","https://cdn.shopify.com/s/files/1/0607/2126/6875/products/il_fullxfull.2138266631_k721.jpg?v=1639430992"],"price":19,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:19.713Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_P5-PLypj","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_P5-PLypj' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Ultramarine Red. Half pan or bottle cap of handmade ultramarine red watercolor paint' and a budget_max comfortably above $19.00 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."]}}