x402 census · intel.rallylive.ca · e87b6661b2ee · JSON

GET /library/subject/spain

live

Free public-domain books on "Spain": browse the catalogue's works tagged with that Library of Congress subject (355 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://intel.rallylive.ca/library/subject/spain

Method GET

Price $0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts eip155:84532

payTo 0x91D568599fB802Cb3f03F067D2063785dBAF0abd

Seller intel.rallylive.ca

Catalogs cdp (row updated 2026-09-13), payai (row updated 2026-09-28)

Listed since (lower bound) 2026-09-13 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-28

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-13 (catalog-reported, not verified on chain)

Category (keyword rule) domains/dns

Templated path no

x402Version in catalog 2

Service name / tags free-books-spain · free, books, public-domain, spain, subject

Unpaid probe (census of 2026-09-30)

Field Value

Probed at 2026-09-30T23:46:15.892Z

HEAD 402

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"10000","payTo":"0xFC24FD34da9e49A0110DCaEe3Ad30eC54175eBB3","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":120,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo no

extensions.bazaar in the 402 yes

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / cloudflare / none

Latency 1,354 ms

Error Payment required

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 1

Payments 50

USDC volume $0.50

Median payment n/a

First / last payment 2026-09-13 / 2026-09-13

Sampler-shaped share of payments n/a

Payers that are not samplers n/a

Source blockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total

Address 0x91D568599fB802Cb3f03F067D2063785dBAF0abd

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "query": "*"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "count": 20,
   "filters": {
    "kind": "book",
    "subject": "Spain"
   },
   "results": [
    {
     "authors": "Shelley, Mary Wollstonecraft, 1797-1851",
     "id": "gutenberg:84",
     "kind": "book",
     "language": "en",
     "rights": "public-domain-us",
     "title": "Frankenstein; Or, The Modern Prometheus",
     "url": "https://www.gutenberg.org/ebooks/84"
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://intel.rallylive.ca/library/subject/spain' -H 'accept: application/json'

The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/e87b6661b2ee/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"e87b6661b2ee"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: PayAI listing status · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on intel.rallylive.ca.