Discover / rockndefi.xyz:8443

x402 Web Probe

■ Challenge detected

Pay-per-use web probe API for AI agents: HTTP reachability check, HTML-to-Markdown, domain intel (DNS/RDAP), and page metadata extraction. Settles USDC on Base via x402. SSRF-hardened.

x402
Base
USDC
Other

Listed price: $0.001
Challenge detected: 3 of the last 3 checks
Median response: 142 ms
Last checked: 16 Oct, 23:40 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://rockndefi.xyz:8443/v1/check
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

4 listed endpoints · on x402-list.com

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://rockndefi.xyz:8443/v1

GET/markdown$0.003Fetch a public web page (static HTML, no JS) and convert it to clean Markdown for LLM/agent consumption. Max 2MB.
GET/domain$0.002Domain intel bundle: DNS records (A/AAAA/MX/NS/TXT/CAA/CNAME), RDAP registration (registrar, created/expires, status, nameservers) and TLS certificate (issuer, days left) in one call.
GET/meta$0.002Extract page metadata from a public URL: title, meta description, canonical, language, OpenGraph/Twitter card tags, favicon, headings (h1-h3) and up to 200 absolute links.
GET/check$0.001Website uptime/latency/TLS check of a public URL, measured from a server in US Central (St. Louis). Returns status, DNS/TTFB/total ms, redirect chain, cert expiry.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 4 of 4 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/rockndefi.xyz:8443

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, 23:40 UTC	Challenge detected	402	351ms
15 Oct, 19:10 UTC	Challenge detected	402	107ms
14 Oct, 12:00 UTC	Challenge detected	402	142ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for x402 Web Probe?

Its listed price is $0.001.

What payment terms does x402 Web Probe advertise?

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

Where is x402 Web Probe listed?

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

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