{"type":"firestarter.listing","listing":{"id":"lst_wrwQZXY3","product_name":"Purpletop Vervain Fine Art Poster","category":"Fine Art","description":"Julia Whitney Barnes is an artist living in Poughkeepsie, NY, who works in a variety of media including cyanotypes, watercolor, gouache, oil paintings, stained glass, murals, and site-specific installations. In her works on paper, she approaches each growing thing with equal importance regardless of whether it is a weed, rare species, wildflower, or cultivated flower. She finds it deeply satisfying to take something that is ephemeral and represent it in a way that can live on forever.\nOriginal Medium: Cyanotype painting\nThis fine art poster measures 18 x 24 inches and ships via USPS Priority Mail in a poster tube mailer.","images":["https://cdn.shopify.com/s/files/1/0072/0909/1117/files/PurpletopVervainprintwebimage.jpg?v=1771086893","https://cdn.shopify.com/s/files/1/0072/0909/1117/files/PurpletopVervainprintinaroom.jpg?v=1771086893"],"price":29.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:34.082Z"},"share_url":"https://firestarter.network/l/lst_wrwQZXY3","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_wrwQZXY3' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Purpletop Vervain Fine Art Poster' and a budget_max comfortably above $29.99 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."]}}