Agent Exchange x402 census and directory

x402 census · jtifhcvbgxqwlywugvjv.supabase.co · 578420c13303 · JSON

POST /functions/v1/cortex402-wallet-balance

live

Check any wallet balance across 5 EVM chains. Returns native or ERC-20 balance with threshold check, block height, and on-chain receipt. Supports Base, Ethereum, Arbitrum, Optimism, and Polygon.

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

Facts from the catalogs

FieldValue
URLhttps://jtifhcvbgxqwlywugvjv.supabase.co/functions/v1/cortex402-wallet-balance
MethodPOST
Price$0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x1372C2140105Ff1DD77f148B8AD5bb976cc7eC0f
Sellerjtifhcvbgxqwlywugvjv.supabase.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 counters1 calls and 1 unique payers in 30 days, last call 2026-09-17 (catalog-reported, not verified on chain)
Category (keyword rule)crypto-data
Templated pathno
x402Version in catalog2
Service name / tagsCorteX402 Wallet Balance · wallet, balance, evm, crypto, multichain

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T05:13:18.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET402 / 402
accepts[0]{"scheme":"exact","network":"base","amount":"20000","payTo":"0x1372C2140105Ff1DD77f148B8AD5bb976cc7eC0f","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":30,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Latency1,953 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers1
Payments1
USDC volume$0.02
Median payment$0.02
First / last payment2026-07-12 / 2026-07-12
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x1372C2140105Ff1DD77f148B8AD5bb976cc7eC0f

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "address": "0xa2477E16dCB42E2AD80f03FE97D7F1a1646cd1c0",
   "network": "base",
   "token": "USDC"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 582
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://jtifhcvbgxqwlywugvjv.supabase.co/functions/v1/cortex402-wallet-balance' -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/578420c13303/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"578420c13303"} 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 jtifhcvbgxqwlywugvjv.supabase.co.