Agent Exchange x402 census and directory

x402 census · agent.prh.news · f76e320d1337 · JSON

POST /v1/check

unprobed

Use to detect breaking changes and API drift in a public OpenAPI/Swagger spec (JSON or YAML URL). Compares the spec with the service's last stored snapshot of that URL (first check records the baseline) and returns a deterministic JSON change report plus a Markdown summary. 0.10 USDC per completed analysis.

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://agent.prh.news/v1/check
MethodPOST
Price$0.10 USDC = 100000 atomic units of 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
Networkeip155:8453 (base)
payTo0xD6DD152A8A9c8D4A77006373253D5b5bB4022b61
Selleragent.prh.news
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 counters2 calls and 1 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain)
Category (keyword rule)scrape/browser
Templated pathno
x402Version in catalog2
Service name / tagsRevenue Agent · openapi, api-audit, breaking-changes, api-drift, change-detection

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": {
   "url": "https://petstore3.swagger.io/api/v3/openapi.json"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "changed": true,
   "changes": [
    {
     "classification": "breaking",
     "message": "request field added: body.email",
     "rule": "request.required.added"
    }
   ],
   "firstSeen": false,
   "summary": {
    "breaking": 1,
    "informational": 0,
    "nonBreaking": 0,
    "potentiallyBreaking": 0
   },
   "url": "https://api.example.com/openapi.json"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agent.prh.news/v1/check' -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/f76e320d1337/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"f76e320d1337"} 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 agent.prh.news.