Agent Exchange x402 census and directory

x402 census · payai.agentstools.dev · 8e2f24e79519 · JSON

GET /dev/package

live

Package intelligence across npm / PyPI / crates: latest version, age, release cadence, deprecation/yank, license, and download stats (last day/week/month) with a rising/falling trend. Aggregates the official registry + downloads API + deps.dev.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

FieldValue
URLhttps://payai.agentstools.dev/dev/package
MethodGET
Price$0.005 USDC = 5000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
Networksolana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp (solana)
payToAytHnvc6bZx1ALTy7b5Px7hcavoSYszG9aeKvDcZ8R1u
Sellerpayai.agentstools.dev
Catalogspayai (row updated 2026-09-30)
Listed since (lower bound)2026-09-30 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-30
CDP quality countersnot in the CDP catalog
Category (keyword rule)other/unknown
Templated pathno
x402Version in catalog2
Service name / tagsdev-package-stats · dev, package, npm, pypi, crates

Unpaid probe (census of 2026-09-30)

FieldValue
Probed at2026-09-30T23:49:05.979Z
HEAD402
GET402
Verdictlive live: valid 402 to an unpaid GET
402 carried inheader+body
x402Version in the 4022
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"5000","payTo":"0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Live payTo equals catalog payTono
extensions.bazaar in the 402yes
PAYMENT-REQUIRED headeryes
WWW-Authenticate offernone
Content type / server / CORSapplication/json / uvicorn / none
Latency1,567 ms
ErrorPayment required

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: non-EVM payTo; only Base is covered

Declared input and output (extensions.bazaar)

{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "name": "react",
   "ecosystem": "npm"
  }
 },
 "output": {
  "type": "json",
  "example": {
   "name": "react",
   "yanked": false,
   "license": "MIT",
   "signals": {
    "is_maintained": true,
    "download_trend": "stable"
   },
   "age_days": 4200,
   "downloads": {
    "last_day": 4200000,
    "last_week": 28000000,
    "last_month": 120000000
   },
   "ecosystem": "npm",
   "deprecated": false,
   "latest_version": "18.3.1",
   "releases_count": 150,
   "release_cadence_days": 21
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://payai.agentstools.dev/dev/package' -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/8e2f24e79519/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"8e2f24e79519"} 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 payai.agentstools.dev.