x721.dev

■ Challenge detected

View the roadmap

x402
Base
USDC

Listed price: $0.01
Challenge detected: 10 of the last 10 checks
Median response: 755 ms
Last checked: 17 Oct, 07:50 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x721.dev/roadmap
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

1 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.

GEThttps://x721.dev/roadmap$0.01View the roadmap

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

Showing 1 of 1 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x721.dev

Recent checks

28 Sept 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.17 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
17 Oct, 07:50 UTC	Challenge detected	402	529ms
15 Oct, 23:42 UTC	Challenge detected	402	551ms
14 Oct, 19:26 UTC	Challenge detected	402	757ms
12 Oct, 22:31 UTC	Challenge detected	402	867ms
11 Oct, 00:15 UTC	Challenge detected	402	523ms
9 Oct, 18:38 UTC	Challenge detected	402	761ms
8 Oct, 15:35 UTC	Challenge detected	402	820ms
7 Oct, 12:43 UTC	Challenge detected	402	790ms
6 Oct, 15:31 UTC	Challenge detected	402	548ms
28 Sept, 17:02 UTC	Challenge detected	402	752ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 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 x721.dev?

Its listed price is $0.01.

What payment terms does x721.dev 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 x721.dev listed?

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

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