{"type":"firestarter.listing","listing":{"id":"lst_Hr91H6oi","product_name":"Glasswing Twinkle Pair","category":null,"description":"Glasswing flutters with a luminous sapphire base, while Toponium glows with a complex teal. Both shades reveal iridescent magenta sheen when saturated on fountain-pen-friendly papers like Tomoe River or Rhodia, and are finished with a radiant dusting of pigmented golden sparkle. For best color character, use a broad nib with wet flow to unlock every visual dimension.\nThese Pennsylvania-made dye–pigment hybrid fountain pen inks arrive in thick 90mL glass bottles with lined metal caps and a copper foil-stamped gift box.\n\n\nGlasswing Butterly Twinkle • $39\n\nToponium Twinkle • $39\n\nBundle Value: $78Order today for only: $59\nEach 90mL minimum volume will provide over 110 standard converter refills with an average 0.8mL draw. Rigid glass bottles arrive individually wrapped in cellulose wadding and prepared in a beautifully foiled gift box. Our ink color swatch and writing samples are produced on Tomoe River paper with a cotton swab and medium point grade nib. ","images":["https://cdn.shopify.com/s/files/1/1237/1088/files/Glasswing_Twinkle_Pair_16aaf0f6-a1c0-4d08-9e90-91b61f3b3194.jpg?v=1779288326","https://cdn.shopify.com/s/files/1/1237/1088/files/Toponium_Twinkle_Bundle_Macro_Writing.jpg?v=1769020294","https://cdn.shopify.com/s/files/1/1237/1088/files/Glasswing_Butterfly_Twinkle_4b0f5ac2-7e88-4d9f-992e-483c57bb5f2b.jpg?v=1779288093","https://cdn.shopify.com/s/files/1/1237/1088/files/Toponium_Twinkle_527f28c1-fafd-48f1-938d-4f45d3ed7c4a.jpg?v=1779288052","https://cdn.shopify.com/s/files/1/1237/1088/files/Ink_Bottle_Box.jpg?v=1774542507"],"price":59,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:18.198Z"},"share_url":"https://firestarter.network/l/lst_Hr91H6oi","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_Hr91H6oi' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Glasswing Twinkle Pair' and a budget_max comfortably above $59.00 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."]}}