{"type":"firestarter.listing","listing":{"id":"lst_dqZNqzsV","product_name":"Rack Junctions - 3\" x 3\"","category":null,"description":"The Bells of Steel Rack Junctions let you connect, expand, and customize your rack setup any way you want. Attach a Kraken cable tower, extend a pull-up bar, or build a custom storage rig. The only limit is your imagination!There are two versions:\n\nBox Junctions: Compact 3x3 uprights with keyholes on all sides. Perfect for top or side connections.\n\nStand Junctions: Taller units with a built-in footplate for added stability and creative setups.\nEach junction features right-side-up and upside-down keyholes so you can bolt and rotate them in any direction. It’s a clever bit of over-engineering that gives you near-infinite configuration options. Our engineers don't sleep!Instead of paying to ship a pair of full uprights, these junctions give you the same rock-solid strength in a smaller, cheaper, easier-to-handle package. They’re compact, cost-effective, and built to last.Compatible with Hydra and Manticore systems, the Rack Junctions are your ticket to a smarter, more flexible home gym setup. Whether you’re connecting a Kraken, expanding your pull-up station, or building out storage, these are the missing pieces your setup’s been waiting for.Our Favourite Junction Recipes:Kraken Batwing Attachment Setup:\n1 x Kraken \n1 Box Junction\n1 Stand Junctions\n1 x Upright to match your rack setup (minimum 84\")\n4 crossmembers (we recommend 2 x 30\"+ for barbell and loading clearance to connect to your power rack, 2 x 24\" minimum to house the Kraken.\nExtended Pull-Up Bar:\n2 Stand Junctions\n1 pull-up bar to match your rack width\nWheeling storage:\n2 stand junctions\n2 x 30\" Hydra flatfoot crossmembers\n\n1 x 43\" crossmember\n\n1 x caster wheels (set of 4)\n4 x vertical barbell holders for flat foot\n\nNeed a hand customizing your setup? Contact our ever-so-helpful Customer Support team. Have a new recipe to share? Tag us on Instagram.","images":["https://cdn.shopify.com/s/files/1/0654/3346/9125/files/boxjunc-hdrmtc-thumbnail.jpg?v=1770379679","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/standjunc-hdrmtc-thumbnail.jpg?v=1770379679"],"price":49.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.290Z"},"share_url":"https://firestarter.network/l/lst_dqZNqzsV","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_dqZNqzsV' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Rack Junctions - 3\" x 3\"' and a budget_max comfortably above $49.99 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."]}}