Discover / groundcheck.seiche.info

Groundcheck

□ No challenge detected

Groundcheck is verified enrichment for AI agents. Send a factual claim and it returns a machine verified verdict with a confidence score and cited sources, grounded against live web sources. Identity protocols verify who an agent is; Groundcheck verifies what it says. Single claim grounding is free. Paid endpoints over x402: claim extraction and instrument resolution at 0.005 USDC, document grounding at 0.02, and delivery attestation at 0.05, which returns a signed receipt binding the x402 payme

x402
Base
USDC
Data

Challenge detected: 0 of the last 3 checks
Last checked: 17 Oct, 07:50 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://groundcheck.seiche.info
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/groundcheck.seiche.info

Recent checks

14 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.17 Oct 2026

All 3 checks

When (UTC)	Result	HTTP	Response
17 Oct, 07:50 UTC	No challenge detected	200	402ms
15 Oct, 19:10 UTC	No challenge detected	200	438ms
14 Oct, 08:45 UTC	No challenge detected	200	381ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 17 Oct, 07:50 UTC, we detected no payment challenge.

What payment terms does Groundcheck advertise?

The listing advertises x402, Base and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is Groundcheck listed?

In x402-list.com. Superstables first indexed it on 14 Oct 2026.

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