passlisted in Coinbase#3 by calls of 5 on this host
0.03 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 06:26 UTC
- First observed by TOLLderived
- 2026-10-04
- Pricederived
- 0.03 USDC
- Networks
- 3
How big is this endpoint among the ones like it?
No trace is drawn of this endpoint’s own volume. Its counters have changed 2 times across 25 observations, and 3 changes are the fewest this site will draw a trace through, because two points and a guess are not a series. Every observation is in the JSON.
presign-guard.fizzl.eu serves check explain, a POST endpoint that TOLL places in identity, listed in the Coinbase registry.
A call to check explain costs 0.03 USDC on Base, as declared.
Callers of check explain supply a json body with the fields type, token, amount, chainId and spender.
For check explain the listing declares 3 accepts on Base, XRPL and Algorand, to 3 different wallets.
check explain returns json; the example shows reasons and verdict.
The daily sweep got a valid payment challenge from check explain on 2026-10-27, as at every sweep since 2026-10-04.
check explain is one of 5 listed endpoints on presign-guard.fizzl.eu, tied 3rd by calls with 2 others among them.
check explain takes 13% of the calls counted across presign-guard.fizzl.eu.
The registry's counters give check explain 2 calls and 2 unique payers over 30 days, every call from a different payer.
check explain was last called 5 days before the snapshot.
Closest in price to check explain within identity: care pack at omniguchi.0000402.xyz and ledger at worxai.tech.
Among comparable prices in identity, check explain sits above 78% of them.
Its payee wallet receives for 32 listed endpoints across 8 hosts.
For 2 of the options on check explain, TOLL has no verified decimals and shows the raw amount.
The seller's tags on check explain are wallet-security, pre-sign, approvals and sanctions.
The price of check explain is declared by 56 other listings in identity too.
the payment options, as of 2026-10-13 14:08 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.03 USDC | exact | 0x6B0F46…175F25 |
| Coinbase | xrpl: | 524C5553…000000 | amount not declared | exact | r9xmBsRr…2FGwqw |
| Coinbase | algorand: | 31566704 | 30000 smallest units, decimals unknown | exact | LOYVFSQ6…JDXAX4 |
the checks, as of 2026-10-27 09:33 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-10-27 09:33 UTC | pass | 0 | daily-2026-10-27 |
| 2026-10-26 15:58 UTC | pass | 0 | daily-2026-10-26 |
| 2026-10-23 09:49 UTC | pass | 0 | daily-2026-10-23 |
| 2026-10-21 12:17 UTC | pass | 0 | daily-2026-10-21 |
| 2026-10-20 11:57 UTC | pass | 0 | daily-2026-10-20 |
| 2026-10-19 09:37 UTC | pass | 0 | daily-2026-10-19 |
| 2026-10-18 11:24 UTC | pass | 0 | daily-2026-10-18 |
| 2026-10-16 07:34 UTC | pass | 0 | daily-2026-10-16 |
| 2026-10-15 09:24 UTC | pass | 0 | daily-2026-10-15 |
| 2026-10-14 07:23 UTC | pass | 0 | daily-2026-10-14 |
| 2026-10-13 12:10 UTC | pass | 0 | daily-2026-10-13 |
| 2026-10-12 09:35 UTC | pass | 0 | daily-2026-10-12 |
| 2026-10-11 08:13 UTC | pass | 0 | daily-2026-10-11 |
| 2026-10-10 16:21 UTC | pass | 0 | daily-2026-10-10 |
| 2026-10-09 09:14 UTC | pass | 0 | daily-2026-10-09 |
| 2026-10-08 10:44 UTC | pass | 0 | daily-2026-10-08 |
| 2026-10-07 10:06 UTC | pass | 0 | daily-2026-10-07 |
| 2026-10-06 10:49 UTC | pass | 0 | daily-2026-10-06 |
| 2026-10-05 09:40 UTC | pass | 0 | daily-2026-10-05 |
| 2026-10-04 21:58 UTC | pass | 0 | new-after-daily-2026-10-04 |
Presence in a registry, not liveness of the service (method). Newest first.
- listed in Coinbase
From the registry record, not validated by TOLL.the declared schema, as of 2026-10-08 06:26 UTC · method · live
The input and output block
{
"input": {
"body": {
"type": "approval",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000000",
"chainId": 8453,
"spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"reasons": [
{
"code": "UNLIMITED_APPROVAL",
"details": {
"token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
},
"subject": "0x000000000022d473030f116ddee9f6b43ac78ba3",
"severity": "orange"
}
],
"verdict": "orange"
}
}
}Cite this page
The pinned URL below renders this page from the snapshot of 2026-10-13 14:08 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).
Plain text
TOLL, "check explain on presign-guard.fizzl.eu", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/presign-guard-fizzl-eu-v1-check-explain-8e8a16/at/2026-10-13T14-08Z. Accessed [access date].
BibTeX
@misc{toll-e-presign-guard-fizzl-eu-v1-check-explain-8e8a16-2026-10-13T14-08Z,
author = {TOLL},
title = {check explain on presign-guard.fizzl.eu},
howpublished = {\url{https://tollindex.com/e/presign-guard-fizzl-eu-v1-check-explain-8e8a16/at/2026-10-13T14-08Z}},
year = {2026},
month = {10},
note = {Pinned view of the snapshot of 2026-10-13 14:08 UTC. Accessed [access date].}
}None yet. Anything submitted through the form below is published here with its outcome.