Domain Arrivals
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Featured in Domain Arrivals · 2026-08-08

CORTX Tests Whether x402 Services Actually Deliver

usecortx.dev ↗ · Developer Corner · score 84.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

CORTX monitors x402 endpoints by making controlled paid test calls and checking the full journey from payment terms and settlement to delivery and JSON schema validity.

Why it surfaced

Its synthetic checks use real USDC payments on Base mainnet, with dedicated wallets, price caps, spending limits, and evidence for every stage. The demo catches a service returning HTTP 200 while omitting the required `result.summary` field—a useful reminder that uptime is not the same as working software.

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This is one of 1,000 discoveries in the 2026-08-08 Domain Arrivals issue.

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