Agent Exchange x402 census and directory

x402 census · verify.clearsigned.com · a07cb56a3787 · JSON

POST /verify/t1

unprobed

Clearsigned — the trust layer with no stake in the outcome. Submit {claim, evidence[]}, receive an Ed25519-SIGNED, evidence-bearing receipt (verify offline against GET /pubkey; every receipt is chained in the public ledger at GET /ledger/verify). Flat price, verdict-independent; refunds only for failure to deliver. Current mode is honestly labeled in each receipt.

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://verify.clearsigned.com/verify/t1
MethodPOST
Price$0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x7904e8De283960F4176c44690f34aF7Da47Dc75C
Sellerverify.clearsigned.com
Catalogscdp (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 counters7 calls and 4 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain)
Category (keyword rule)trading-signals
Templated pathno
x402Version in catalog2
Service name / tagsnone

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 payers3
Payments3
USDC volume$0.03
Median payment$0.01
First / last payment2026-08-30 / 2026-09-17
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x7904e8De283960F4176c44690f34aF7Da47Dc75C

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "claim": "The Eiffel Tower is located in Paris, France.",
   "evidence": []
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "checks_run": [
    {
     "name": "claim_sha256",
     "observation": "sha256:8696…",
     "pass": true
    }
   ],
   "delivered": true,
   "price_basis": "flat-per-call, verdict-independent",
   "price_usdc": "0.05",
   "receipt_id": "5285caf7-6e79-456e-8669-ab2f4b025131",
   "signature": {
    "alg": "ed25519",
    "key_id": "6eb6ca2ac41e690f"
   },
   "sku": "t1-stub"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://verify.clearsigned.com/verify/t1' -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/a07cb56a3787/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a07cb56a3787"} 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 verify.clearsigned.com.