Discover / x402-demo-discovery-endpoint.vercel.app

x402-demo-discovery-endpoint.vercel.app

■ Challenge detected

Demo endpoint for x402 resource discovery

x402
Base
Base Sepolia
USDC

Listed price: $0.001
Challenge detected: 9 of the last 9 checks
Median response: 159 ms
Last checked: 16 Oct, 16:44 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402-demo-discovery-endpoint.vercel.app/protected
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

2 listed endpoints · on x402 Bazaar

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

Base URLhttps://x402-demo-discovery-endpoint.vercel.app

GET/protected/testnetNo price listedTestnet demo endpoint for x402 resource discovery
GET/protected$0.001Demo endpoint for x402 resource discovery

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

Showing 2 of 2 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402-demo-discovery-endpoint.vercel.app

Recent checks

2 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 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 16:44 UTC	Challenge detected	402	955ms
15 Oct, 08:20 UTC	Challenge detected	402	159ms
13 Oct, 22:50 UTC	Challenge detected	402	846ms
11 Oct, 22:04 UTC	Challenge detected	402	61ms
10 Oct, 10:04 UTC	Challenge detected	402	860ms
9 Oct, 03:33 UTC	Challenge detected	402	58ms
8 Oct, 00:44 UTC	Challenge detected	402	47ms
6 Oct, 21:30 UTC	Challenge detected	402	94ms
2 Oct, 05:04 UTC	Challenge detected	402	852ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 16:44 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-discovery-endpoint.vercel.app?

Its listed price is $0.001.

What payment terms does x402-demo-discovery-endpoint.vercel.app advertise?

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

Where is x402-demo-discovery-endpoint.vercel.app listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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