Discover / x402-demo-production-19f3.up.railway.app

x402-demo-production-19f3.up.railway.app

■ Challenge detected

x402 Agent payment proof of concept

Listed price
$0.01
Challenge detected
3 of the last 3 checks
Median response
269 ms
Last checked
9 Oct, 15:20 UTC
In our index since
7 Oct 2026

Endpoint

curl -i https://x402-demo-production-19f3.up.railway.app/demo
# 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/x402-demo-production-19f3.up.railway.app

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)ResultHTTPResponse
9 Oct, 15:20 UTCChallenge detected402269ms
8 Oct, 09:20 UTCChallenge detected402262ms
7 Oct, 00:22 UTCChallenge detected402666ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 9 Oct, 15:20 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-demo-production-19f3.up.railway.app?

Its listed price is $0.01.

What payment terms does x402-demo-production-19f3.up.railway.app advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402-demo-production-19f3.up.railway.app listed?

In x402 Bazaar. Superstables first indexed it on 7 Oct 2026.

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