{"type":"firestarter.listing","listing":{"id":"lst_tXc0y2dM","product_name":"Super 21 Junior Racket","category":"Junior Tennis Racket","description":"These 21 inch aluminum composite rackets are ideal for junior players aged 6-8 and are learning the game for the first time. Players can choose between bright yellow or blue colors in a round shaped head.  The Super 21s are pre-strung with soft synthetic gut, and include a racket cover !\nColors:  Blue or Yellow\nHead Size:  95 sq in Length: 21 in  Weight: 7.0 oz | 200gBalance: 2 PT HL | 265mmString Pattern: 16 x19Grip Size: G0  (4\")Pre Strung: Syn Gut","images":["https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-blue-angle-right.jpg?v=1779201922","https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-Yellow-angle-right.jpg?v=1779201936","https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-02-LS1.jpg?v=1779201946","https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-LS2.jpg?v=1779201956","https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-04-LS3.jpg?v=1779201963","https://cdn.shopify.com/s/files/1/0253/6210/4402/products/Super21-03-LS4.jpg?v=1779201973"],"price":29.95,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:55:57.821Z"},"share_url":"https://firestarter.network/l/lst_tXc0y2dM","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 ","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_tXc0y2dM' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Super 21 Junior Racket' and a budget_max comfortably above $29.95 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."]}}