Discover / maraventanoindex.com

maraventanoindex.com

■ Challenge detected

Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment-attached count, settlement count, class, verdict (known_payer | probe_only | low_signal | unknown), with Ed25519 attestation. Pay $0.01 USDC on Base or Solana per call. Call it before every transaction to check if a counterparty has ever paid at this merchant seat. Wallet-based lookup (?wallet=) reserved for v2.

x402
Base
Solana
USDC

Listed price: $0.01
Challenge detected: 9 of the last 9 checks
Median response: 55 ms
Last checked: 16 Oct, 23:40 UTC
In our index since: 4 Oct 2026

Endpoint

curl -i https://maraventanoindex.com/api/x402-operator-census/lookup
# 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://maraventanoindex.com/api/x402-operator-census/lookup$0.01Per-call counterparty lookup. Pass ?ua=<counterparty-UA>. Returns ONE signed row: has_record (yes/no), payment-attached count, settlement count, class, verdict (known_payer | probe_only | low_signal | unknown), with Ed25519 attestation. Pay $0.01 USDC on Base or Solana per call. Call it before every transaction to check if a counterparty has ever paid at this merchant seat. Wallet-based lookup (?wallet=) reserved for v2.

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/maraventanoindex.com

Recent checks

4 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, 23:40 UTC	Challenge detected	402	290ms
15 Oct, 19:10 UTC	Challenge detected	402	64ms
14 Oct, 12:00 UTC	Challenge detected	402	54ms
12 Oct, 06:05 UTC	Challenge detected	402	47ms
10 Oct, 15:44 UTC	Challenge detected	402	62ms
9 Oct, 12:40 UTC	Challenge detected	402	51ms
8 Oct, 09:33 UTC	Challenge detected	402	64ms
7 Oct, 03:32 UTC	Challenge detected	402	55ms
4 Oct, 05:04 UTC	Challenge detected	402	47ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 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 maraventanoindex.com?

Its listed price is $0.01.

What payment terms does maraventanoindex.com advertise?

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

Where is maraventanoindex.com listed?

In x402 Bazaar. Superstables first indexed it on 4 Oct 2026.

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