{"type":"firestarter.listing","listing":{"id":"lst_5ssRhXHo","product_name":"Silicone Grease - NSF H1","category":"Fountain Pen Accessory","description":"This is silicone grease for those of you who like to fill our pens via eye dropper / syringe. For instructions on applying this grease, visit our How To page under the Info top bar tab, and reference the second video. Included in this jar is approx 1/2 oz of silicone grease. We recommend that you use this particular grease, or one marked \"food grade\" silicone grease, as there are many options on the market that aren't sufficient for blocking ink travel through threads. (note: jar type may vary)","images":["https://cdn.shopify.com/s/files/1/0023/7679/4187/files/F-CSiliconeGrease.jpg?v=1712773056","https://cdn.shopify.com/s/files/1/0023/7679/4187/products/silicone_grease.jpg?v=1712773056"],"price":5,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:20.945Z"},"share_url":"https://firestarter.network/l/lst_5ssRhXHo","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_5ssRhXHo' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Silicone Grease - NSF H1' and a budget_max comfortably above $5.00 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."]}}