x402 census · api.maxwellinternational.ai · 45290c4122f3 · JSON

GET /v1/uspto/patent

unprobed

US patent search by keywords (?q=, every word must match; up to 10 USPTO applications and grants, newest filing first) or one patent by number (?patentNumber=US11000000). Each result: title, assignee, inventors, CPC classes, filing and grant dates, USPTO status, and patentNumber for granted patents or applicationNumber for pending applications. Uncached: 404, not charged.

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

Field Value

URL https://api.maxwellinternational.ai/v1/uspto/patent

Method GET

Price $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

payTo 0x5976376b0c2125655e01d0a7758c744c43fb6d93

Seller api.maxwellinternational.ai

Catalogs cdp (row updated 2026-09-30)

Listed since (lower bound) 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-30

CDP quality counters 6 calls and 2 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain)

Category (keyword rule) other/unknown

Templated path no

x402Version in catalog 2

Service name / tags Maxwell x402 · data, x402, api

Unpaid probe (census of )

Field

Value

Probe

not 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)

Field Value

Distinct payers 2

Payments 51

USDC volume $0.33

Median payment $0.005

First / last payment 2026-09-30 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x5976376b0c2125655e01d0a7758c744c43fb6d93 (contract)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "q": "lithium battery anode"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "assignee": "4C MEDICAL TECHNOLOGIES, INC.",
   "cpc": [
    "A61F 2/243"
   ],
   "filingDate": "2019-09-12",
   "grantDate": "2021-05-11",
   "granted": true,
   "patentNumber": "US11000000",
   "status": "Patented Case",
   "title": "REPOSITIONING WIRES AND METHODS FOR REPOSITIONING PROSTHETIC HEART VALVE DEVI..."
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.maxwellinternational.ai/v1/uspto/patent' -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/45290c4122f3/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"45290c4122f3"} 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 api.maxwellinternational.ai.