{"type":"firestarter.listing","listing":{"id":"lst_eAc72vLl","product_name":"GoStak®","category":"GoStak®","description":"Durable jars secure tightly to carry powders, vitamins, supplements, snacks, and more.SIMPLE. PORTABLE. VERSATILE.GoStaks are a smart and sleek advancement in portable nutrition. Durable jars secure tightly to carry powders, vitamins, supplements, snacks, and more. The 150cc jar holds 87% of protein powder servings so whether you pack pre-, intra-, and post-workout supplements to the gym, or simply need a versatile system for snacks and small items, the GoStak has you covered.WATCH VIDEOBUY NOWTAKE ONLY WHAT YOU NEEDThe GoStak jars are designed to be sleek and compact, giving you just enough room for your supplements, without invading your gym bag. Heading out of town? Take a handful of 150cc jars filled with your post-workout supplements, and you've got an instant recovery shake for every day of the week.BUY NOW7 FEATURESREMOVABLE CARRY HANDLEIncluded with the Starter 4Pak, the removable carry handle attaches to any jar lid, making it easy to clip your GoStak to a backpack for quick access.STAIN AND ODOR RESISTANTMade of durable Eastman Tritan™ plastic, the GoStak jars remain clean, clear, and fresh—regardless of what you carried in them the day before.TWIST N' LOCK TECHNOLOGYEasily attach jars to each other in any order and any size. A quick quarter-turn locks them together, making for simple, streamlined portability.BUY NOWGoStak Feature 1LOCK AND LOADEasily connect jars together with a quick twist for added convenience and portability.FITS INSIDEToss the GoStak™ into your BlenderBottle® Classic™ or SportMixer™ for compact traveling.MIX AND MATCHBuild the perfect stack for your needs, with four different jar sizes in nine vibrant colors.ENDLESS POSSIBILITIES #GOSTAKBlenderBottle® GoStak®BLENDERBOTTLE® GOSTAK®$12.99In StockFree U.S. Shipping with $30 PurchaseADD TO WISHLISTSEND TO A FRIENDQTY1SIZEStarter 4PakSHARECART ADD TO CARTPRODUCT DETAILSBlenderBottle® GoStak®Twist n' Lock™ System connects jars with easeSecure Seal for worry-free portabilityDurable Eastman T","images":["https://cdn.shopify.com/s/files/1/1099/1898/products/gostak-gostak-starter-4pak-577879.png?v=1762439528","https://cdn.shopify.com/s/files/1/1099/1898/products/gostak-gostak-150cc-2pak-719467.png?v=1689708788","https://cdn.shopify.com/s/files/1/1099/1898/products/gostak-gostak-100cc-3pak-695432.png?v=1689708788","https://cdn.shopify.com/s/files/1/1099/1898/products/gostak-gostak-40cc-4pak-144689.png?v=1689708788","https://cdn.shopify.com/s/files/1/1099/1898/products/gostak-gostak-starter-4pak-496481.png?v=1689708788","https://cdn.shopify.com/s/files/1/1099/1898/files/BB_24107_GoStakRevamp5260_1_1.png?v=1744826804","https://cdn.shopify.com/s/files/1/1099/1898/files/BB_24107_GoStakRevamp5270_1_1.png?v=1744826961"],"price":14.99,"currency":"USD","in_stock":true,"inventory_qty":39996,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:47.776Z"},"share_url":"https://firestarter.network/l/lst_eAc72vLl","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_eAc72vLl' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy GoStak®' and a budget_max comfortably above $14.99 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."]}}