TOLL

What software pays for, recorded every six hours.

Snapshot
2026-10-13 14:08 UTC
Sweep
daily-2026-10-28 · finished 2026-10-28 13:07 UTC
Listed
32,435

topic search derived

api.kadec0.xyzSearchderived

GET https://api.kadec0.xyz/v1/topic-search

passlisted in Coinbase#37 by calls of 43 on this host

0.02 USDC

per call, as the listing declares it on eip155:8453

Compare with anotherEvery figure as JSONCite this page

the price, as of 2026-10-13 14:08 UTC · method · pinnable

Validation state
pass
as of 2026-10-28 09:47 UTC · method · pinnable · sweep daily-2026-10-28
Uptime, 7 / 30 / 90 days
100% / 100% / 100%
as of 2026-10-28 09:47 UTC · method · pinnable · 4 of 4 in 7d, 27 of 27 in 30d, 39 of 39 in 90d
Calls, trailing 30 days
6
as of 2026-10-13 14:08 UTC · method · pinnable
Unique payers, trailing 30 days
3
as of 2026-10-13 14:08 UTC · method · pinnable
Last called
2026-10-13 04:06 UTC
as of 2026-10-13 14:08 UTC · method · pinnable
First observed by TOLLderived
2026-09-10
as of 2026-09-10 19:08 UTC · method · pinnable · observation began 10 September 2026; listings that predate it show that date
Pricederived
0.02 USDC
as of 2026-10-13 14:08 UTC · method · pinnable · on eip155:8453
Networks
1
as of 2026-10-13 14:08 UTC · method · pinnable

Counters

122 observations, 9 of them a change

How has the volume on this endpoint moved?

3456610 Sep11 Sep12 Sep13 Sep14 Sep15 Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25 Sep26 Sep27 Sep28 Sep29 Sep30 Sep1 Oct2 Oct3 Oct4 Oct5 Oct6 Oct7 Oct8 Oct9 Oct10 Oct11 Oct12 Oct13 Oct
Calls counted in the trailing 30 days on this endpoint, at every snapshot since 2026-09-10. Each point is a trailing-30-day sum as the registry published it, not a daily rate. The axis is truncated to the range of the data with a break at its foot.

In words

topic search is one of 43 listed endpoints on api.kadec0.xyz, tied 37th by calls with 1 other among them.

topic search takes the query parameters q and maxItems.

A response from topic search, as declared, includes count and items.

topic search drew 6 calls from 3 unique payers in the trailing 30 days.

The last call to topic search came on the day of the snapshot, 2026-10-13.

On Base, topic search asks 0.02 USDC per call.

TOLL files topic search under search: a GET endpoint on api.kadec0.xyz, listed in the Coinbase registry.

topic search answered the sweep of 2026-10-28 with a valid 402, as at every sweep since 2026-09-11.

Closest in price to topic search within search: search at forwardlane.pay.zeroclick.io and travel flights at x402engine.app.

Among comparable prices in search, topic search sits above 77% of them.

topic search out-counts 81% of the 2,591 endpoints in search that carry counters.

The wallet paid by topic search is the payee of 43 endpoints on one host.

Seller tags: topic-search, field-search, research-field and paper-discovery.

The price of topic search is declared by 196 other listings in search too.

Payment options as declared

the payment options, as of 2026-10-13 14:08 UTC · method · pinnable

Every payment option declared on this listing
registrynetworkassetamountschemepay to
Coinbaseeip155:8453USDC0.02 USDCexact0x4df66B…3AcDeA

Preflight checks at the last sweep

the checks, as of 2026-10-28 09:47 UTC · method · pinnableendpoint answered HTTP 402

No named check failed.

Validation history, 90 days

Every sweep that observed this endpoint, newest first.

Validation observations over the last 90 days
observed, UTCstatefailed checkssweep
2026-10-28 09:47 UTCpass0daily-2026-10-28
2026-10-27 09:30 UTCpass0daily-2026-10-27
2026-10-26 15:56 UTCpass0daily-2026-10-26
2026-10-23 09:45 UTCpass0daily-2026-10-23
2026-10-21 12:15 UTCpass0daily-2026-10-21
2026-10-20 11:54 UTCpass0daily-2026-10-20
2026-10-19 09:34 UTCpass0daily-2026-10-19
2026-10-18 11:21 UTCpass0daily-2026-10-18
2026-10-16 07:31 UTCpass0daily-2026-10-16
2026-10-15 09:21 UTCpass0daily-2026-10-15
2026-10-14 07:20 UTCpass0daily-2026-10-14
2026-10-13 12:07 UTCpass0daily-2026-10-13
2026-10-12 09:32 UTCpass0daily-2026-10-12
2026-10-11 08:11 UTCpass0daily-2026-10-11
2026-10-10 16:18 UTCpass0daily-2026-10-10
2026-10-09 09:10 UTCpass0daily-2026-10-09
2026-10-08 10:40 UTCpass0daily-2026-10-08
2026-10-07 10:03 UTCpass0daily-2026-10-07
2026-10-06 10:46 UTCpass0daily-2026-10-06
2026-10-05 09:38 UTCpass0daily-2026-10-05
2026-10-04 11:50 UTCpass0daily-2026-10-04
2026-10-03 06:25 UTCpass0daily-2026-10-03
2026-10-02 15:37 UTCpass0daily-2026-10-02
2026-10-01 08:26 UTCpass0daily-2026-10-01
2026-09-30 07:48 UTCpass0daily-2026-09-30
2026-09-29 20:01 UTCpass0daily-2026-09-29
2026-09-28 17:05 UTCpass0daily-2026-09-28
2026-09-23 07:03 UTCpass0daily-2026-09-23
2026-09-22 07:15 UTCpass0daily-2026-09-22
2026-09-21 07:38 UTCpass0daily-2026-09-21
2026-09-19 05:40 UTCpass0daily-2026-09-19
2026-09-18 14:09 UTCpass0daily-2026-09-18
2026-09-17 05:31 UTCpass0daily-2026-09-17
2026-09-16 05:32 UTCpass0daily-2026-09-16
2026-09-15 05:48 UTCpass0daily-2026-09-15
2026-09-14 05:21 UTCpass0daily-2026-09-14
2026-09-13 05:16 UTCpass0daily-2026-09-13
2026-09-12 07:33 UTCpass0daily-2026-09-12
2026-09-11 11:20 UTCpass0daily-2026-09-11

Registry presence

Presence in a registry, not liveness of the service (method). Newest first.

  1. listed in Coinbase

Declared input and output, as listed

From the registry record, not validated by TOLL.the declared schema, as of 2026-10-13 04:06 UTC · method · live

The input and output block
{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "q": "exercise science",
      "maxItems": "12"
    }
  },
  "output": {
    "type": "json",
    "example": {
      "count": 1,
      "items": [
        {
          "mode": "topic",
          "type": "topic_search",
          "count": 12,
          "query": "exercise science",
          "results": [
            {
              "type": "paper",
              "year": 1998,
              "title": "ACSM Position Stand...",
              "clusterRole": "top_cited",
              "citationCount": 3056
            }
          ],
          "routing": {
            "wordCount": 2,
            "confidence": 0.32,
            "isQuestion": false,
            "matchedVia": "works-subfield-modal",
            "groundingLevel": "subfield"
          },
          "grounding": {
            "id": "2732",
            "name": "Orthopedics and Sports Medicine",
            "field": "Medicine",
            "level": "subfield",
            "subfield": "Orthopedics and Sports Medicine"
          },
          "candidateTopics": [
            {
              "id": "T11246",
              "name": "Sports injuries and prevention",
              "field": "Medicine",
              "share": 0.16,
              "votes": 4
            }
          ]
        }
      ]
    }
  }
}
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, "topic search on api.kadec0.xyz", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/api-kadec0-xyz-v1-topic-search-8cf85b/at/2026-10-13T14-08Z. Accessed [access date].

BibTeX

@misc{toll-e-api-kadec0-xyz-v1-topic-search-8cf85b-2026-10-13T14-08Z,
  author = {TOLL},
  title = {topic search on api.kadec0.xyz},
  howpublished = {\url{https://tollindex.com/e/api-kadec0-xyz-v1-topic-search-8cf85b/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].}
}

Reports and replies about this endpoint

None yet. Anything submitted through the form below is published here with its outcome.

Report an error about topic search, or reply as the named seller

No account, no token. Published unedited with its outcome, upheld or not. Do not include personal data.

Kind

Published as typed. Optional.

10 to 4,000 characters.

Verify with the payee wallet (optional, EVM)

Sign this message with the wallet named on the page and paste the signature; it is checked, stored, never published. TOLL reply about endpoint 8cf85b633b6d79a90365b98828f79df7525b36ab108769637427ff2af08a666c from wallet 0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA

The 0x address named as payee on this page, 42 characters.

The hex signature of the message above, starting 0x.