Discover / api.x402intel.uk

Polymarket Liquidity Authenticity + UMA Resolution-Risk

■ Challenge detected

Per-market liquidity authenticity + UMA resolution-risk for Polymarket prediction markets, sold to AI trading agents via x402 ($0.20/call, USDC on Base). Returns whether apparent volume is broad/organic or concentrated/manufactured (HHI, effective traders, book cross-check, on-chain counterparties) AND the UMA resolution-risk on two axes: how often a category disputes on UMA x when disputed, how often the result FLIPS the original proposal vs just confirms, plus whether the criterion is objectiv

x402
Base
USDC
Data

Challenge detected: 10 of the last 10 checks
Median response: 560 ms
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://api.x402intel.uk
# 402 Payment Required: pay with an x402 client (USDC on Base),
# 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/api.x402intel.uk

Recent checks

29 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.16 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	Challenge detected	200	1008ms
15 Oct, 14:11 UTC	Challenge detected	200	791ms
14 Oct, 05:00 UTC	Challenge detected	200	437ms
13 Oct, 10:39 UTC	Challenge detected	402	482ms
11 Oct, 10:02 UTC	Challenge detected	402	626ms
9 Oct, 21:31 UTC	Challenge detected	402	449ms
8 Oct, 18:39 UTC	Challenge detected	402	476ms
7 Oct, 15:42 UTC	Challenge detected	402	820ms
6 Oct, 15:31 UTC	Challenge detected	402	695ms
29 Sept, 05:02 UTC	Challenge detected	402	493ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 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 payment terms does Polymarket Liquidity Authenticity + UMA Resolution-Risk advertise?

The listing advertises x402, Base and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is Polymarket Liquidity Authenticity + UMA Resolution-Risk listed?

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

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