x402 census · monitor.memoryapi.org · 49e4fab2df52 · 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. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://monitor.memoryapi.org/x402/monitor/activity?

Method GET

Price $0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2

Seller monitor.memoryapi.org

Catalogs cdp (row updated 2026-10-02)

Listed since (lower bound) 2026-10-02 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-02

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-10-02 (catalog-reported, not verified on chain)

Category (keyword rule) chain-rpc

Templated path no

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:38:09.434Z

HEAD 200

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header

x402Version in the 402 2

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 price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 yes

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / cloudflare / *

Latency 705 ms

Error Payment required

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)

Field Value

Distinct payers 97

Payments 303

USDC volume $1.11

Median payment $0.001

First / last payment 2026-05-21 / 2026-09-29

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2 (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/49e4fab2df52/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"49e4fab2df52"} 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.