Discover / x402-doctor.fizzl.eu

x402 Doctor

■ Challenge detected

Does this x402 endpoint really deliver? x402 Doctor buys it once with the example input its own listing declares (at most $0.1, USDC on Base), checks the answer against the declared output schema and measures the charge on chain. Answers with a job id at once; the result is public, usually within 30 minutes. For sellers who want proof, and buyers before a big order.

Listed price
$0.25
Challenge detected
1 of the last check
Median response
303 ms
Last checked
15 Oct, 00:26 UTC
In our index since
14 Oct 2026

Endpoint

curl -i https://x402-doctor.fizzl.eu/api/v1/delivery-check
# 402 Payment Required: pay with an x402 client (USDC on Algorand),
# 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-doctor.fizzl.eu

Recent checks

15 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.15 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
15 Oct, 00:26 UTCChallenge detected402303ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 15 Oct, 00:26 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 x402 Doctor?

Its listed price is $0.25.

What payment terms does x402 Doctor advertise?

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

Where is x402 Doctor listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 14 Oct 2026.

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