{"type":"firestarter.listing","listing":{"id":"lst_KX1UNyzZ","product_name":"Black Pearl","category":"Ink Bottle","description":"Black Pearl is an ultra-saturated quasi-sheener, boasting a rich black base that subtly reveals olive undertones at particular angles, then stretches toward a muted greenish-olive when applied in a thinner layer. Swatch is shown using a cotton swab on Tomoe River paper under photography lighting.\nThe extraordinarily high saturation of Black Pearl may make some pens run on the drier side. Adjust your writing experience by adding Dilution Solution until it meets your flow and shading preferences. Expect variation in hue as you dilute. While the dye colorant components of this color are completely water-soluble, regular pen cleaning is recommended and may require extra effort.\nFor best results, wield Black Pearl with a medium point grade or broader nib.","images":["https://cdn.shopify.com/s/files/1/1237/1088/files/Black_Pearl_Macro_Swatch.jpg?v=1744731409","https://cdn.shopify.com/s/files/1/1237/1088/files/Black_Pearl_ba587bb1-0890-478d-8659-ecb2ac341fec.jpg?v=1781269924","https://cdn.shopify.com/s/files/1/1237/1088/files/InkBottleBox_901cdc8a-bf74-4e9a-b255-2c193307e3dc.jpg?v=1744731409"],"price":29,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:18.369Z"},"share_url":"https://firestarter.network/l/lst_KX1UNyzZ","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_KX1UNyzZ' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Black Pearl' and a budget_max comfortably above $29.00 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."]}}