Discover / api.provenpaid.com

api.provenpaid.com

■ Challenge detected

Call before paying an unfamiliar x402 endpoint to check that it is real and actually gets paid. Pass ?url=<endpoint URL>. ProvenPaid probes the endpoint without paying, validates its x402 challenge (v1/v2; MPP detected) and reads public Base data for its receiving address: distinct payers, repeat-payer share, payer concentration and coverage, each with source and timestamp. Evidence, not a verdict. Not charged for invalid or unsafe URLs.

x402
Base
USDC

Listed price: $0.01
Challenge detected: 2 of the last 2 checks
Median response: 169 ms
Last checked: 8 Oct, 15:20 UTC
In our index since: 7 Oct 2026

Endpoint

curl -i https://api.provenpaid.com/v1/check
# 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.provenpaid.com

Recent checks

7 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.8 Oct 2026

All 2 checks

When (UTC)	Result	HTTP	Response
8 Oct, 15:20 UTC	Challenge detected	402	165ms
7 Oct, 06:22 UTC	Challenge detected	402	172ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 8 Oct, 15:20 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 api.provenpaid.com?

Its listed price is $0.01.

What payment terms does api.provenpaid.com 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 api.provenpaid.com listed?

In x402 Bazaar. Superstables first indexed it on 7 Oct 2026.

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