Agent Exchange x402 census and directory

x402 census · x402stock.xyz · 60f07411464f · JSON

GET /api/v1/fda

live

FDA catalysts for a pharma/biotech/medtech company, from openFDA. Pass `?company=Medtronic` (required) plus `?limit=` (max 50). Returns `drug` (recalls + approvals) and `device` (510(k) clearances, PMA approvals, recalls) sections, each with recent items, match totals, and official FDA links. One call across 5 FDA datasets. From x402stock, a market & economic data API (x402, USDC).

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

FieldValue
URLhttps://x402stock.xyz/api/v1/fda
MethodGET
Price$0.03 USDC = 30000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85
Sellerx402stock.xyz
Catalogscdp (row updated 2026-09-22)
Listed since (lower bound)2026-09-22 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-22
CDP quality counters2 calls and 1 unique payers in 30 days, last call 2026-09-22 (catalog-reported, not verified on chain)
Category (keyword rule)other/unknown
Templated pathno
x402Version in catalog2
Service name / tagsnone

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T13:13:42.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET402 / 402
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"30000","payTo":"0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Latency1,316 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers75
Payments166
USDC volume$3.87
Median payment$0.02
First / last payment2026-06-16 / 2026-09-30
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "company": "Pfizer",
   "limit": 10
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 1316
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://x402stock.xyz/api/v1/fda' -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/60f07411464f/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"60f07411464f"} 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 x402stock.xyz.