Discover / supremeaudiobooks.com

Supreme Audiobooks

□ No challenge detected

A corpus of 3,029 public-domain audiobooks by 1,822 authors, with original editorial descriptions and 1,644 machine transcripts across 12 languages (ar, bg, de, en, es, fr, hi, ja, ko, pt, ru, zh). Four x402-metered endpoints: the full catalogue, per-book records, substring search over title and author, and full transcript text per book per language. The audio is public-domain LibriVox narration and is NOT sold here; it is free from us and from LibriVox. What is metered is our own work: the cata

x402
Base
USDC
Content

Challenge detected: 0 of the last 3 checks
Last checked: 16 Oct, 21:16 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://supremeaudiobooks.com
# 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/supremeaudiobooks.com

Recent checks

14 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 3 checks

When (UTC)	Result	HTTP	Response
16 Oct, 21:16 UTC	No challenge detected	200	317ms
15 Oct, 14:11 UTC	No challenge detected	200	607ms
14 Oct, 08:45 UTC	No challenge detected	200	482ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 21:16 UTC, we detected no payment challenge.

What payment terms does Supreme Audiobooks advertise?

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

Where is Supreme Audiobooks listed?

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

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