Discover / agents.sayerandstone.com
Sayer & Stone
□ No challenge detectedAgent-commerce API for Sayer & Stone — lab-grown diamond fine jewelry, made to order.
- Challenge detected
- 0 of the last 3 checks
- Last checked
- 9 Oct, 21:20 UTC
- In our index since
- 7 Oct 2026
Endpoint
curl -i https://agents.sayerandstone.com/purchase # 402 Payment Required: pay with a MPP client, then send the request again.
Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/agents.sayerandstone.com
Recent checks
7 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.9 Oct 2026
All 3 checks
| When (UTC) | Result | HTTP | Response |
|---|---|---|---|
| 9 Oct, 21:20 UTC | No challenge detected | 404 | 259ms |
| 8 Oct, 09:20 UTC | No challenge detected | 404 | 217ms |
| 7 Oct, 00:22 UTC | No challenge detected | 404 | 215ms |
Questions
Did our last probe detect a payment challenge?
No. At our last probe on 9 Oct, 21:20 UTC, we detected no payment challenge.
What payment terms does Sayer & Stone advertise?
The listing advertises MPP, Tempo and USDC. Check the seller's current payment challenge and authentication requirements before paying.
Where is Sayer & Stone listed?
In mppscan. Superstables first indexed it on 7 Oct 2026.
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