{"type":"firestarter.listing","listing":{"id":"lst_8XAzaNV7","product_name":"Crumb Bumper Plate Sets","category":"Weight Plate","description":"It's time to bump up your lifting game. These crumb bumper plates have a thick stainless steel insert ring with 3 anchor points to prevent common bumper breakdowns.The crumb material is quieter than urethane bumpers. Ideal for lifters who don't have a platform and features coloured flecks for easier weight identification. The number one advantage of bumpers is safety for the lifter. A lifter who hesitates to dump a bad lift because they're afraid of damage to the floor or the equipment is more likely to get hurt.Bumpers take any worry about damage completely out of the equation.Iron plates come in a variety of non-standardized diameters, so if you are doing any exercises pulling from the floor, such as deadlifts, or cleans, unless you have 45lb plates on each side, you'll be pulling from a deficit. Not the case here.Cheap bumpers can be up to 10% off the claimed weight, causing you to put the wrong weight on the bar. Our bumper plates are accurate to +/- 1% of the claimed weight. No more second-guessing what's on the bar - ever.NOTE: We're discontinuing the 55 LBS plates, so grab yours while supplies last. The Crumb Bumpers are RoHS-compliant.","images":["https://cdn.shopify.com/s/files/1/0654/3346/9125/files/UMBP-PRNT-carousel-primary_784b8ff3-f339-4544-b0de-60ff96935104.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/UMBP-PRNT-carousel-3_4c34aadd-6236-467f-9b72-5fbdf3c148d1.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/UMBP_Carousel_5_1ae5bad1-6c8a-43db-8533-07b800c2ac02.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/UMBP-PRNT-carousel-2_04cfd710-2cad-49e9-8cae-5df1dd12716c.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/160-UMBP-SET-carousel-primary_5e17b804-9c4a-4999-9407-18c4cb8a093c.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/230-UMBP-SET-carousel-primary_6c221c50-6566-44d1-8817-9513197d5197.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/260-UMBP-SET-carousel-primary_91ccf3a3-e99a-4304-9203-23731effe0a4.jpg?v=1764591843","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/350-UMBP-SET-carousel-primary_ce15b346-533d-4e99-8aba-63b75a15a416.jpg?v=1764591843"],"price":429.99,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.481Z"},"share_url":"https://firestarter.network/l/lst_8XAzaNV7","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_8XAzaNV7' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Crumb Bumper Plate Sets' and a budget_max comfortably above $429.99 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."]}}