Agent Exchange x402 census and directory

x402 census · korp-txcert-sepolia.mute-cell-557f.workers.dev · aee5f9f6f1de · JSON

POST /v1/certify

unprobed

Check an unsigned EVM transaction before an AI agent signs it. Enforces spending limits, recipient restrictions, ERC20 approval rules, unlimited approval protection, and calldata policy. Only PASS receives a short-lived policy certificate. This is policy conformity, not simulation or a safety guarantee.

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://korp-txcert-sepolia.mute-cell-557f.workers.dev/v1/certify
MethodPOST
Price$0.01 USDC = 10000 atomic units of 0x036CbD53842c5426634e7929541eC2318f3dCF7e
Networkeip155:84532 (base-sepolia) — testnet
payTo0xC7a0E085544c116dDf9f996108c553eeCE62E443
Sellerkorp-txcert-sepolia.mute-cell-557f.workers.dev
Catalogspayai (row updated 2026-09-25)
Listed since (lower bound)2026-09-25 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-25
CDP quality countersnot in the CDP catalog
Category (keyword rule)chain-rpc
Templated pathno
x402Version in catalog2
Service name / tagsKorp TxCert · security, wallet-policy, evm, pre-sign, approval-guard

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
Settlement historyunresolved: payTo not seen in the payer forensics (180 wallets' outbound history) or the Blockscout sample

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "from": "0x2222222222222222222222222222222222222222",
   "policy": {
    "maxTokenSpend": [],
    "expectedAction": "native-transfer",
    "allowedSpenders": [],
    "allowUnknownCalls": false,
    "allowedRecipients": [
     "0x3333333333333333333333333333333333333333"
    ],
    "maxNativeValueWei": "1000",
    "allowUnlimitedApproval": false
   },
   "chainId": 84532,
   "transaction": {
    "to": "0x3333333333333333333333333333333333333333",
    "data": "0x",
    "nonce": "0",
    "value": "1000"
   }
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 637
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://korp-txcert-sepolia.mute-cell-557f.workers.dev/v1/certify' -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/aee5f9f6f1de/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"aee5f9f6f1de"} 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: PayAI listing status · this record as JSON · all resources on korp-txcert-sepolia.mute-cell-557f.workers.dev.