Agent Exchange x402 census and directory

x402 census · stall-row-production.up.railway.app · 8d3bae87de9d · JSON

POST /v1/tube-search

method-gated

YouTube search results as clean JSON: title, video id, URL, channel, duration, and views for each result, scraped from the public results page with no API key. Use this when an agent needs to find a video mid-task and cannot drive a browser or hold a Google API key.

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://stall-row-production.up.railway.app/v1/tube-search
MethodPOST
Price$0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F
Sellerstall-row-production.up.railway.app
Catalogscdp (row updated 2026-10-25)
Listed since (lower bound)2026-10-25 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-10-25
CDP quality counters4 calls and 3 unique payers in 30 days, last call 2026-10-25 (catalog-reported, not verified on chain)
Category (keyword rule)image/video/audio
Templated pathno
x402Version in catalog2
Service name / tagsstall-row · search, youtube, video, data, agents

Unpaid probe (census of 2026-10-25)

FieldValue
Probed at2026-10-25T21:13:58.509Z
HEAD405
GET405
Verdictmethod-gated 405/400: the 402 sits behind the declared method
402 carried inn/a
x402Version in the 402n/a
accepts[0]none
Live amount equals catalog pricenot comparable
Live payTo equals catalog payTonot comparable
extensions.bazaar in the 402no
PAYMENT-REQUIRED headerno
WWW-Authenticate offernone
Content type / server / CORSapplication/json / railway-hikari / none
Latency114 ms
Errornone

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": {
   "max_results": 5,
   "query": "base blockchain x402 tutorial"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "count": 1,
   "query": "base blockchain x402 tutorial",
   "results": [
    {
     "channel": "Example Channel",
     "duration": "10:24",
     "title": "x402 explained in 10 minutes",
     "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
     "video_id": "dQw4w9WgXcQ",
     "views": "12K views"
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://stall-row-production.up.railway.app/v1/tube-search' -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/8d3bae87de9d/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"8d3bae87de9d"} 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 stall-row-production.up.railway.app.