x402 census · sellers · checkdigit.openverbs.com · JSON
checkdigit.openverbs.com unverified
checkdigit.openverbs.com lists 5 x402 resources in cdp; 0 answered a valid 402 to an unpaid GET, 0 are dead; prices $0.002 to $0.002; on-chain 5 payers, 197 payments, $1.35 USDC; discovery files: not checked.
Listed resources
5
POST 5
Valid 402
0 / 0
verdict unverified
Dead
0
none
Prices
$0.002–$0.002
median $0.002; networks base
Payers on record
5
197 payments, $1.35 USDC, last 2026-09-30
Sampler share
100.0%
payments from monitor/indexer-shaped wallets
Discovery files on the host
| File | Status | Detail |
|---|---|---|
| /.well-known/x402 | not checked | |
| /openapi.json | not checked | |
| /llms.txt | not checked | |
| /.well-known/agent-card.json | not checked |
On-chain settlement facts (public payTo addresses)
5 distinct paying wallets, 197 payments, $1.35 USDC between 2026-09-09 and 2026-09-30; 100.0% of payments came from sampler-shaped wallets. Source: forensics-2026-09-30; the payTo also receives for 90 other hosts; on-chain totals are per address, not per host.
payTo: 0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A. The same payTo also receives for 90 other hosts: airport.openverbs.com, astro.openverbs.com, bitwise.openverbs.com, braille.openverbs.com, chain.openverbs.com, checksum.openverbs.com, chem.openverbs.com, chemeq.openverbs.com, color.openverbs.com, combinatorics.openverbs.com, creditcard.openverbs.com, crypto.openverbs.com and more; on-chain totals are per address, not per host.
Resources (5)
| Resource | Price | Network | Verdict | Catalogs | Description |
|---|---|---|---|---|---|
| POST /v1/routing | $0.002 | base | live re-probed 2026-10-01 | cdp | Validate a 9-digit US ABA bank routing number by its weighted (3,7,1) mod-10 checksum. Sp… |
| POST /v1/imei | $0.002 | base | live re-probed 2026-10-01 | cdp | Validate a 15-digit mobile device IMEI by its Luhn check digit. Spaces and hyphens are ig… |
| POST /v1/ean | $0.002 | base | live re-probed 2026-10-01 | cdp | Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard m… |
| POST /v1/isbn | $0.002 | base | live re-probed 2026-10-01 | cdp | Validate an ISBN-10 (mod-11, trailing X allowed) or ISBN-13 (GTIN mod-10) book number. Le… |
| POST /v1/luhn | $0.002 | base | live re-probed 2026-10-01 | cdp | Validate a number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card nu… |
Counting the latest re-probes of the first 5 resources, 5 answer a valid 402 now. Catalog rows: cdp 5. Listed since at least 2026-09-06; last catalog update 2026-09-06. CDP counters: 15 calls, 5 payer-rows in 30 days (catalog-reported).
Badge
<a href="https://bazaar.agentexchange.work/seller/checkdigit.openverbs.com"><img src="https://bazaar.agentexchange.work/seller/checkdigit.openverbs.com.svg" alt="checkdigit.openverbs.com on the Agent Exchange x402 census: 0 routes live"></a>
Paid report (x402)
GET https://bazaar.agentexchange.work/seller/checkdigit.openverbs.com/report.json re-probes up to 18 of these resources right now, re-fetches the manifest and returns the whole record for $0.05 USDC on Base. Unpaid requests answer 402 with the terms. Pricing.