passlisted in Coinbase#1 by calls of 3 on this host
0.003 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
- 2026-10-06 07:28 UTC
- First observed by TOLLderived
- 2026-09-17
- Pricederived
- 0.003 USDC
- Networks
- 1
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 88 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.
TOLL files masters under the "other" category: a POST endpoint on chess402.vercel.app, listed in the Coinbase registry.
Per call, masters declares 0.003 USDC on Base.
masters takes a json body with the fields fen, play, moves and topGames.
A response from masters, as declared, includes black, draws, moves, white, opening and topGames.
The daily sweep got a valid payment challenge from masters on 2026-10-30, as at every sweep since 2026-09-17.
With 3 endpoints listed on chess402.vercel.app, masters is 1st by calls.
masters takes 50% of the calls counted across chess402.vercel.app.
The registry's counters give masters 2 calls and 2 unique payers over 30 days, every call from a different payer.
masters was last called 7 days before the snapshot.
Closest in price to masters within the "other" category: convert weight at weight402endpoint.vercel.app and x402 test at sandbox.node4all.com.
masters is priced above 20% of comparable listings in the "other" category.
The wallet paid by masters is the payee of 4 endpoints on one host.
The price of masters is declared by 264 other listings in the "other" category too.
the payment options, as of 2026-10-13 14:08 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.003 USDC | exact | 0xfbd462…b1852f |
the checks, as of 2026-10-30 07:12 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-10-30 07:12 UTC | pass | 0 | daily-2026-10-30 |
| 2026-10-29 06:53 UTC | pass | 0 | daily-2026-10-29 |
| 2026-10-28 07:16 UTC | pass | 0 | daily-2026-10-28 |
| 2026-10-27 07:06 UTC | pass | 0 | daily-2026-10-27 |
| 2026-10-26 12:26 UTC | pass | 0 | daily-2026-10-26 |
| 2026-10-24 21:48 UTC | pass | 0 | daily-2026-10-24 |
| 2026-10-23 07:04 UTC | pass | 0 | daily-2026-10-23 |
| 2026-10-22 05:19 UTC | pass | 0 | daily-2026-10-22 |
| 2026-10-21 08:59 UTC | pass | 0 | daily-2026-10-21 |
| 2026-10-20 09:10 UTC | pass | 0 | daily-2026-10-20 |
| 2026-10-19 06:47 UTC | pass | 0 | daily-2026-10-19 |
| 2026-10-18 08:56 UTC | pass | 0 | daily-2026-10-18 |
| 2026-10-17 18:59 UTC | pass | 0 | daily-2026-10-17 |
| 2026-10-16 05:10 UTC | pass | 0 | daily-2026-10-16 |
| 2026-10-15 06:47 UTC | pass | 0 | daily-2026-10-15 |
| 2026-10-14 05:05 UTC | pass | 0 | daily-2026-10-14 |
| 2026-10-13 09:36 UTC | pass | 0 | daily-2026-10-13 |
| 2026-10-12 07:01 UTC | pass | 0 | daily-2026-10-12 |
| 2026-10-11 05:24 UTC | pass | 0 | daily-2026-10-11 |
| 2026-10-10 13:40 UTC | pass | 0 | daily-2026-10-10 |
| 2026-10-09 05:40 UTC | pass | 0 | daily-2026-10-09 |
| 2026-10-08 07:23 UTC | pass | 0 | daily-2026-10-08 |
| 2026-10-07 06:33 UTC | pass | 0 | daily-2026-10-07 |
| 2026-10-06 07:24 UTC | pass | 0 | daily-2026-10-06 |
| 2026-10-05 06:54 UTC | pass | 0 | daily-2026-10-05 |
| 2026-10-04 09:41 UTC | pass | 0 | daily-2026-10-04 |
| 2026-10-03 04:44 UTC | pass | 0 | daily-2026-10-03 |
| 2026-10-02 13:57 UTC | pass | 0 | daily-2026-10-02 |
| 2026-10-01 07:03 UTC | pass | 0 | daily-2026-10-01 |
| 2026-09-30 06:20 UTC | pass | 0 | daily-2026-09-30 |
| 2026-09-29 18:41 UTC | pass | 0 | daily-2026-09-29 |
| 2026-09-28 04:32 UTC | pass | 0 | daily-2026-09-28 |
| 2026-09-25 20:14 UTC | pass | 0 | daily-2026-09-25 |
| 2026-09-23 05:54 UTC | pass | 0 | daily-2026-09-23 |
| 2026-09-22 06:04 UTC | pass | 0 | daily-2026-09-22 |
| 2026-09-21 06:27 UTC | pass | 0 | daily-2026-09-21 |
| 2026-09-20 19:06 UTC | pass | 0 | daily-2026-09-20 |
| 2026-09-19 04:27 UTC | pass | 0 | daily-2026-09-19 |
| 2026-09-18 10:17 UTC | pass | 0 | daily-2026-09-18 |
| 2026-09-17 11:41 UTC | pass | 0 | new-after-daily-2026-09-17 |
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 2026-10-06 07:28 UTC · method · live
The input and output block
{
"input": {
"body": {
"fen": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"play": "e2e4,e7e5",
"moves": 12,
"topGames": 4
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"black": 198217,
"draws": 311203,
"moves": [
{
"san": "Nf3",
"uci": "g1f3",
"game": null,
"black": 64210,
"draws": 98421,
"white": 152340,
"opening": {
"eco": "C42",
"name": "Russian Game"
},
"averageRating": 2434
}
],
"white": 482141,
"opening": {
"eco": "C20",
"name": "King's Pawn Game"
},
"topGames": [
{
"id": "Sxov6E94",
"uci": "g1f3",
"year": 2019,
"black": {
"name": "Carlsen, M.",
"rating": 2882
},
"month": "2019-08",
"white": {
"name": "Caruana, F.",
"rating": 2818
},
"winner": "white"
}
]
}
}
}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, "masters on chess402.vercel.app", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/chess402-vercel-app-api-masters-346aa9/at/2026-10-13T14-08Z. Accessed [access date].
BibTeX
@misc{toll-e-chess402-vercel-app-api-masters-346aa9-2026-10-13T14-08Z,
author = {TOLL},
title = {masters on chess402.vercel.app},
howpublished = {\url{https://tollindex.com/e/chess402-vercel-app-api-masters-346aa9/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.