{"type":"firestarter.listing","listing":{"id":"lst_IPTmTOnE","product_name":"Shepard's End B-stock","category":"Guitar Effects Pedal","description":"If you don't mind a little scuff, scratch or nick, you can save a few bucks.\nWhile B-stock units have minor cosmetic defects, the internal components are the same as a standard pedal and they carry the standard 1-year Mr. Black Warranty.\nPLEASE NOTE:NO RETURNS/EXCHANGES/REFUNDS.ALL B-STOCK SALES FINAL!\nThis is:  the world's first Barber Pole Through-Zero Flanger.\nSo what is a \" barber pole through-zero flanger?\"Well, essentially, the Shepard's End is a flanger, but its unlike any flanger you've ever heard, played or experienced.  While the term \"Barber Pole\" sounds neat-o-speed-o, what it really means is that this flanger does not have a beginning, or an end to its cycle.  WHAT?!\nYou know how most flangers go up, then back down?  Well, this one doesn't do that.  Nope.  It goes up, continually.  It goes down, continually.  It can even go through the zero-point (that amazing over the top wooshing sound you hear on so many records), continually.  This just depends on how you set the controls.  And they're pretty easy to use.\nAs if that weren't enough, you get both positive (swishy, phaser-y sounds) and negative (tubular, hollow, sucking-into-itself sounds) regeneration control.  Or, just raw through-zero flanging at its finest as you have heard on so many recordings.\nFrom draggingly slow to space-ray-gun fast.  And its all in one little knob called \"Speed\"\nThis is the future.  This is the past.  This is, the Shepard's End.\n\nClick the links below for MP3s:Are you gonna end my way? (0:32) Shepard's Apple (0:32)\n \nManual (36K)","images":["https://cdn.shopify.com/s/files/1/0174/5126/products/Shepard_s-End-B-Stock.jpg?v=1445560703"],"price":149.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:48.975Z"},"share_url":"https://firestarter.network/l/lst_IPTmTOnE","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_IPTmTOnE' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Shepard's End B-stock' and a budget_max comfortably above $149.95 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."]}}