Discover / pageproof.alert-crab-1890.chatgpt.site

PageProof

□ No challenge detected

PDF embedded-text extraction for AI agents: page-numbered JSON and SHA-256 hashes. 0.005 USDC on Base per successful PDF, up to 25 pages and 2 MiB. No OCR or LLM.

x402
Base
USDC
Other

Challenge detected: 0 of the last 3 checks
Last checked: 16 Oct, 21:16 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://pageproof.alert-crab-1890.chatgpt.site
# 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/pageproof.alert-crab-1890.chatgpt.site

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.16 Oct 2026

All 3 checks

When (UTC)	Result	HTTP	Response
16 Oct, 21:16 UTC	No challenge detected	200	1073ms
15 Oct, 14:11 UTC	No challenge detected	200	1251ms
14 Oct, 05:00 UTC	No challenge detected	200	1189ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 21:16 UTC, we detected no payment challenge.

What payment terms does PageProof advertise?

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

Where is PageProof listed?

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

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