{"name":"Sayer & Stone","description":"Lab-grown diamond fine jewelry from Sayer & Stone. Agent purchases via Tempo MPP, x402 USDC on Base, and Stripe SPT. Made to order.","url":"https://agents.sayerandstone.com","preferredTransport":"HTTP+JSON","protocolVersion":"1.0","version":"1.0.0","capabilities":{"extensions":[{"uri":"https://ucp.dev/2026-04-08/specification/reference","description":"UCP support: this agent serves Universal Commerce Protocol bindings via the A2A transport.","required":false,"params":{"capabilities":{}}}]},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"jewelry-purchase","name":"Jewelry purchase","description":"Buy lab-grown diamond fine jewelry (earrings, bracelets) with variants drawn from length, metal, and total carat weight. Multi-rail (Tempo MPP, x402 USDC on Base, Stripe SPT). Made to order.","tags":["commerce","jewelry","fine-jewelry","lab-grown","made-to-order"]}],"documentationUrl":"https://agents.sayerandstone.com/llms.txt"}