{"type":"firestarter.listing","listing":{"id":"lst_ijy9jqZl","product_name":"Underworld","category":null,"description":"Descend into the darkest depths of the sea. Underworld features a deep blue base infused with a mesmerizing green, blue, and purple multichrome magnetic effect, finished with a teal shimmer that mimics glowing bioluminescent plankton drifting through the abyss. Mysterious, powerful, and cinematic - this shade is pure underwater magic.\nThe SpongeBob Movie Nail Polish Collection brings Bikini Bottom straight to your fingertips with otherworldly finishes, ghostly glows, and oceanic effects inspired by cursed pirates, eerie underworlds, and unforgettable deep-sea adventures. Each shade is designed to feel like bottled treasure - no diving suit required! \n \n ","images":["https://cdn.shopify.com/s/files/1/0935/7741/2956/files/Underworld_Nailpolish.png?v=1767690472","https://cdn.shopify.com/s/files/1/0935/7741/2956/files/Underworld_Swatch.png?v=1774947846","https://cdn.shopify.com/s/files/1/0935/7741/2956/files/Underworld_closeup.png?v=1768313781"],"price":18,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:00.366Z"},"share_url":"https://firestarter.network/l/lst_ijy9jqZl","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 ","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_ijy9jqZl' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Underworld' and a budget_max comfortably above $18.00 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."]}}