{"type":"firestarter.listing","listing":{"id":"lst_ZpzQKlDy","product_name":"Tension Strap Option for DuoStrap","category":"Guitar Straps","description":"The Tension Strap is a simple add-on to allow the DuoStrap to work on single-cut basses &amp; guitars with standard strap pins. Attaches to each strap pin and pulled tight to create a spot for the 2nd shoulder strap to connect to. Comes in black only, and constructed of durable synthetic leather tips with seatbelt type webbing.\n(Note: A strap lock system may be required to accommodate the thickness of 2 straps)\nDownload setup instructions (PDF)","images":["https://cdn.shopify.com/s/files/1/0931/2816/products/duostrap-tension-strap.png?v=1511408277"],"price":19.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:23.350Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_ZpzQKlDy","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_ZpzQKlDy' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Tension Strap Option for DuoStrap' and a budget_max comfortably above $19.99 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."]}}