Agent Exchange x402 census and directory

x402 census · topic-scorer.pixelcove.co · ad28522f0179 · JSON

POST /v1/gate

unprobed

Pass/fail check: does the text rank within the top `min_rank` categories of its target taxonomy? Returns `pass`, the target's rank and gap to #1, the taxonomy's top five, and the unused phrases to work in. Use it as a content-pipeline gate. Paid, $0.05/call; read-only and safe to retry.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://topic-scorer.pixelcove.co/v1/gate
MethodPOST
Price$0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x88ff5A0608Ff45077f68200AF35618121a0FA443
Sellertopic-scorer.pixelcove.co
Catalogscdp (row updated 2026-09-17)
Listed since (lower bound)2026-09-17 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-17
CDP quality counters2 calls and 2 unique payers in 30 days, last call 2026-09-17 (catalog-reported, not verified on chain)
Category (keyword rule)other/unknown
Templated pathno
x402Version in catalog2
Service name / tagstopic-scorer

Unpaid probe (census of )

FieldValue
Probenot probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Distinct payers1
Payments1
USDC volume$0.05
Median payment$0.05
First / last payment2026-09-17 / 2026-09-17
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x88ff5A0608Ff45077f68200AF35618121a0FA443

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "category": "example",
   "taxonomy": "google_ads_topics",
   "text": "example"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "min_rank": 3,
   "pass": true,
   "phrases_unused": [
    "intrusion detection"
   ],
   "phrases_used": [
    "firewall"
   ],
   "target": {
    "gap_to_top": 0,
    "id": "344",
    "path": "...",
    "rank": 1,
    "score": 0.842
   },
   "top": [
    {
     "id": "344",
     "path": "...",
     "rank": 1,
     "score": 0.842
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://topic-scorer.pixelcove.co/v1/gate' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/ad28522f0179/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ad28522f0179"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on topic-scorer.pixelcove.co.