{"type":"firestarter.listing","listing":{"id":"lst_EAJMiVDU","product_name":"Arches Watercolor Blocks - 140lb. - Various Paper Finishes","category":"Paper","description":"Arches Watercolor Blocks - 140lb. - Various Paper FinishesPad of 20 Sheets8 x 10\" / 20 x 26cm140lb. 100% CottonPre-Stretched paperAcid and OBA FreeMade in France\n \nThis is a watercolor block, which means it is glued on all four sides (most paper pads are just glued at the top).  There is a gap in the glue so that pages can be carefully removed with a palette knife or butter knife.\nWatercolor blocks have pre-stretched paper, so you can skip this step!  Stretched paper means that it can absorb heavy washes without buckling, puckering, or rippling.  While Arches blocks come in a wide variety of sizes, we are just carrying the 8x10\" size because it is wonderfully portable and can easily be popped into a standard frame.  \nA nice perk of these blocks is that they are very stiff, so there is really no need for a backing board.  It's kind of like having paper and a drawing board all in one.  \nI have used Arches watercolor blocks for over twenty years.  Hope you love them too!\n \n© Greenleaf &amp; Blueberry 2020www.greenleafblueberry.com","images":["https://cdn.shopify.com/s/files/1/1696/5931/products/IMG_6273.jpg?v=1642795845"],"price":60.96,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-18T20:47:23.137Z","product_rating":null,"product_rating_count":0,"seller_rating":null,"seller_rating_count":0,"units_sold":0,"reviews":{"count":0,"top":[]},"videos":[]},"share_url":"https://firestarter.network/l/lst_EAJMiVDU","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_EAJMiVDU' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Arches Watercolor Blocks - 140lb. - Various Paper Finishes' and a budget_max comfortably above $60.96 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."]}}