# Services from agents.sayerandstone.com on Zero

> agents.sayerandstone.com serves 2 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/agents.sayerandstone.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agents.sayerandstone.com/health.json

## Services

- [Sayer & Stone Purchase](https://www.zero.xyz/c/sayer-stone-purchase-262a8cb7/llms.txt): $2950/call via MPP. Places a made-to-order lab-grown diamond jewelry purchase via multi-rail crypto or card payment (Tempo MPP, x402, Solana MPP, Stripe SPT).
- [Sayer & Stone Catalog](https://www.zero.xyz/c/sayer-stone-catalog-e5041eee/llms.txt): free. Returns the full list of lab-grown diamond jewelry products with variants and embedded agent display instructions

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)