Agent Exchange x402 census and directory

x402 census · monitor.memoryapi.org · c6032922ecfe · JSON

GET /x402/monitor/activity

live

x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs.

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

FieldValue
URLhttps://monitor.memoryapi.org/x402/monitor/activity
MethodGET
Price$0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2
Sellermonitor.memoryapi.org
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 counters4 calls and 4 unique payers in 30 days, last call 2026-09-17 (catalog-reported, not verified on chain)
Category (keyword rule)chain-rpc
Templated pathno
x402Version in catalog2
Service name / tagsnone

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T12:13:42.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET200 / 402
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"1000","payTo":"0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Latency420 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers97
Payments303
USDC volume$1.11
Median payment$0.001
First / last payment2026-05-21 / 2026-09-29
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2 (contract: EIP7702Proxy)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "hours": "24",
   "service": "clinical"
  },
  "schema": {
   "properties": {
    "hours": {
     "description": "Lookback window in hours (1-168, default 24)",
     "type": "string"
    },
    "service": {
     "description": "Filter by service name (e.g. clinical, bio, research)",
     "type": "string"
    }
   },
   "required": []
  },
  "type": "http"
 },
 "output": {
  "example": {
   "period_hours": 24,
   "source": "memoryapi.org nginx logs",
   "success": true,
   "top_endpoints": [
    {
     "calls": 87,
     "endpoint": "/x402/clinical/study",
     "trend": "up"
    }
   ],
   "total_paid_calls": 142
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://monitor.memoryapi.org/x402/monitor/activity' -H 'accept: application/json'

The catalog declares GET. 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/c6032922ecfe/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c6032922ecfe"} 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 monitor.memoryapi.org.