{"type":"firestarter.listing","listing":{"id":"lst_DhkJmZ0R","product_name":"SMSL H400 Headphone Amplifier & Preamplifier","category":null,"description":" \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-headphone-amplifier-preamplifier-hifigo-784238.jpg?v=1721297539","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-headphone-amplifier-preamplifier-hifigo-931639.jpg?v=1721297532","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-high-res-balanced-desktop-dac-and-headphone-amp-hifigo-h400-silver-256387.jpg?v=1718308422","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-high-res-balanced-desktop-dac-and-headphone-amp-hifigo-499365.jpg?v=1718308332","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-high-res-balanced-desktop-dac-and-headphone-amp-hifigo-363170.jpg?v=1718308346","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-high-res-balanced-desktop-dac-and-headphone-amp-hifigo-597808.jpg?v=1718308325","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/smsl-h400-headphone-amplifier-preamplifier-hifigo-h400-black-756612.jpg?v=1721297569"],"price":510,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:29.779Z"},"share_url":"https://firestarter.network/l/lst_DhkJmZ0R","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_DhkJmZ0R' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy SMSL H400 Headphone Amplifier & Preamplifier' and a budget_max comfortably above $510.00 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."]}}