Discover / x402.lucidcove.org

Mercer x402 (hub probe)

■ Challenge detected

Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

x402
Base
USDC

Listed price: $0.001
Challenge detected: 10 of the last 10 checks
Median response: 141 ms
Last checked: 17 Oct, 07:50 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402.lucidcove.org/v1/ping
# 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://x402.lucidcove.org/v1/ping$0.001Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

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/x402.lucidcove.org

Recent checks

26 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	125ms
15 Oct, 23:42 UTC	Challenge detected	402	179ms
14 Oct, 19:26 UTC	Challenge detected	402	151ms
13 Oct, 00:46 UTC	Challenge detected	402	133ms
11 Oct, 06:02 UTC	Challenge detected	402	98ms
9 Oct, 21:31 UTC	Challenge detected	402	110ms
8 Oct, 15:35 UTC	Challenge detected	402	137ms
7 Oct, 09:33 UTC	Challenge detected	402	709ms
5 Oct, 17:05 UTC	Challenge detected	402	261ms
26 Sept, 05:02 UTC	Challenge detected	402	145ms

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 Mercer x402 (hub probe)?

Its listed price is $0.001.

What payment terms does Mercer x402 (hub probe) 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 Mercer x402 (hub probe) listed?

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

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