passlisted in Coinbase#1 by calls of 5 on this host
0.002 USDC
per call, as the listing declares it on eip155:
- Validation state
- pass
- Uptime, 7 / 30 / 90 days
- 100% / 100% / 100%
- Calls, trailing 30 days
- 2
- Unique payers, trailing 30 days
- 2
- Last called
- 2026-10-08 05:39 UTC
- First observed by TOLLderived
- 2026-09-10
- Pricederived
- 0.002 USDC
- Networks
- 1
How has the volume on this endpoint moved?
isbn is a POST endpoint at checkdigit.openverbs.com, listed in the Coinbase registry and filed by TOLL under search.
isbn is priced at 0.002 USDC on Base.
The listing describes the request as a json body with the field isbn.
isbn declares nothing about its output; validate flags that as advisory, not a verdict.
isbn answered the sweep of 2026-10-12 with a valid 402, as at every sweep since 2026-09-11.
isbn is one of 5 listed endpoints on checkdigit.openverbs.com, tied 1st by calls with 4 others among them.
isbn takes 20% of the calls counted across checkdigit.openverbs.com.
The registry's counters give isbn 2 calls and 2 unique payers over 30 days, every call from a different payer.
isbn was last called 4 days before the snapshot.
Closest in price to isbn within search: exa contents at stableenrich.dev and gift cards search at api.bitrefill.com.
isbn is among the cheapest in search; 7% of comparable listings ask less.
The wallet paid by isbn is the payee of 411 endpoints across 91 hosts.
The seller's own tags are isbn validation, validate isbn, isbn check digit and isbn 10 isbn 13.
It disappeared from the registry on 2026-10-06 and returned on 2026-10-07.
The price of isbn is declared by 162 other listings in search too.
the payment options, as of 2026-10-12 15:20 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.002 USDC | exact | 0xb3f4de…C2194A |
the checks, as of 2026-10-12 06:16 UTC · method · pinnableendpoint answered HTTP 402
bazaar.info.output· advisory, does not affect the verdict · output metadata is present (advisory)
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-10-12 06:16 UTC | pass | 1 | daily-2026-10-12 |
| 2026-10-11 04:39 UTC | pass | 1 | daily-2026-10-11 |
| 2026-10-10 09:56 UTC | pass | 1 | daily-2026-10-10 |
| 2026-10-09 04:41 UTC | pass | 1 | daily-2026-10-09 |
| 2026-10-08 06:18 UTC | pass | 1 | daily-2026-10-08 |
| 2026-10-07 06:06 UTC | pass | 1 | daily-2026-10-07 |
| 2026-10-06 06:23 UTC | pass | 1 | daily-2026-10-06 |
| 2026-10-05 06:07 UTC | pass | 1 | daily-2026-10-05 |
| 2026-10-04 08:56 UTC | pass | 1 | daily-2026-10-04 |
| 2026-10-03 04:15 UTC | pass | 1 | daily-2026-10-03 |
| 2026-10-02 13:25 UTC | pass | 1 | daily-2026-10-02 |
| 2026-10-01 06:38 UTC | pass | 1 | daily-2026-10-01 |
| 2026-09-30 05:56 UTC | pass | 1 | daily-2026-09-30 |
| 2026-09-29 18:17 UTC | pass | 1 | daily-2026-09-29 |
| 2026-09-28 04:09 UTC | pass | 1 | daily-2026-09-28 |
| 2026-09-25 19:51 UTC | pass | 1 | daily-2026-09-25 |
| 2026-09-23 05:33 UTC | pass | 1 | daily-2026-09-23 |
| 2026-09-22 05:42 UTC | pass | 1 | daily-2026-09-22 |
| 2026-09-21 06:06 UTC | pass | 1 | daily-2026-09-21 |
| 2026-09-20 18:45 UTC | pass | 1 | daily-2026-09-20 |
| 2026-09-19 04:07 UTC | pass | 1 | daily-2026-09-19 |
| 2026-09-18 09:03 UTC | pass | 1 | daily-2026-09-18 |
| 2026-09-17 04:06 UTC | pass | 1 | daily-2026-09-17 |
| 2026-09-16 04:06 UTC | pass | 1 | daily-2026-09-16 |
| 2026-09-15 04:05 UTC | pass | 1 | daily-2026-09-15 |
| 2026-09-14 04:03 UTC | pass | 1 | daily-2026-09-14 |
| 2026-09-13 04:03 UTC | pass | 1 | daily-2026-09-13 |
| 2026-09-12 06:18 UTC | pass | 1 | daily-2026-09-12 |
| 2026-09-11 09:44 UTC | pass | 1 | daily-2026-09-11 |
Presence in a registry, not liveness of the service (method). Newest first.
- back in Coinbase
- absent from Coinbase at this pull
- listed in Coinbase
From the registry record, not validated by TOLL.the declared schema, as of 2026-10-08 05:39 UTC · method · live
The input and output block
{
"input": {
"body": {
"isbn": "9780306406157"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": null
}Cite this page
The pinned URL below renders this page from the snapshot of 2026-10-12 15:20 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).
Plain text
TOLL, "isbn on checkdigit.openverbs.com", snapshot of 2026-10-12 15:20 UTC. https://tollindex.com/e/checkdigit-openverbs-com-v1-isbn-196775/at/2026-10-12T15-20Z. Accessed [access date].
BibTeX
@misc{toll-e-checkdigit-openverbs-com-v1-isbn-196775-2026-10-12T15-20Z,
author = {TOLL},
title = {isbn on checkdigit.openverbs.com},
howpublished = {\url{https://tollindex.com/e/checkdigit-openverbs-com-v1-isbn-196775/at/2026-10-12T15-20Z}},
year = {2026},
month = {10},
note = {Pinned view of the snapshot of 2026-10-12 15:20 UTC. Accessed [access date].}
}None yet. Anything submitted through the form below is published here with its outcome.