Discover / x402check.arden-instance.workers.dev

x402check

■ Challenge detected

Live x402 conformance pre-flight check: pass ?url=<x402 endpoint>, get a structured PASS/WARN/FAIL verdict on its 402 challenge before you trust it with a real payment.

x402
Base
USDC
Verification

Listed price: $0.002
Challenge detected: 10 of the last 10 checks
Median response: 96 ms
Last checked: 17 Oct, 09:26 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402check.arden-instance.workers.dev/check
# 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://x402check.arden-instance.workers.dev

GET/base/gas$0.002Read-only Base mainnet data: GET /base/block, /base/tx?hash=, /base/balance?address=, /base/erc20?token=&holder=, /base/gas. Small JSON payloads over a Base node; pay ~$0.002 USDC on Base per call.
GET/check$0.002Live x402 conformance pre-flight check: pass ?url=<x402 endpoint>, get a structured PASS/WARN/FAIL verdict on its 402 challenge before you trust it with a real payment.

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/x402check.arden-instance.workers.dev

Recent checks

30 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, 09:26 UTC	Challenge detected	402	234ms
16 Oct, 08:13 UTC	Challenge detected	402	89ms
14 Oct, 23:56 UTC	Challenge detected	402	117ms
13 Oct, 14:18 UTC	Challenge detected	402	127ms
11 Oct, 12:57 UTC	Challenge detected	402	78ms
10 Oct, 03:32 UTC	Challenge detected	402	86ms
9 Oct, 00:47 UTC	Challenge detected	402	31ms
7 Oct, 21:31 UTC	Challenge detected	402	103ms
6 Oct, 18:37 UTC	Challenge detected	402	179ms
30 Sept, 17:04 UTC	Challenge detected	402	68ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 09:26 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 x402check?

Its listed price is $0.002.

What payment terms does x402check 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 x402check listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

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