Agent Exchange x402 census and directory

x402 census · mudko.com · 5c04c3b17309 · JSON

GET /api/x402/citation-check

unprobed

Live AI-citation check: runs fresh probes against major AI assistants and reports whether a domain is cited for its vertical's buying questions — citation rate per provider, list position, and whether the domain's agent-card was discovered. Fresh probes per call (not cached). $0.50 per check. Free companion diagnosis: /api/x402/deep-scan.

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://mudko.com/api/x402/citation-check
MethodGET
Price$0.50 USDC = 500000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x53598173ce7c26025bab0520d9e9d0c28fbcf7de
Sellermudko.com
Catalogscdp (row updated 2026-09-01)
Listed since (lower bound)2026-09-01 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-01
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-01 (catalog-reported, not verified on chain)
Category (keyword rule)inference/llm
Templated pathno
x402Version in catalog2
Service name / tagsAI Citation Check · ai-citations, aeo, geo, brand-monitoring, llm-visibility

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 payers12
Payments14
USDC volume$0.67
Median payment$0.005
First / last payment2026-07-27 / 2026-09-29
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x53598173ce7c26025bab0520d9e9d0c28fbcf7de

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "domain": "example.com (string, required - bare domain to check)",
   "vertical": "healthcare_practice (string, optional - vertical id)"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "agent_card_discovered": false,
   "citation_rate": 0.25,
   "domain": "example.com",
   "paid": true,
   "providers": [
    {
     "avg_position": 3,
     "citations": 1,
     "probes": 2,
     "provider": "openai"
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://mudko.com/api/x402/citation-check' -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/5c04c3b17309/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"5c04c3b17309"} 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 mudko.com.