Discover / api.maxwellinternational.ai

Maxwell x402

■ Challenge detected

x402 Doctor checkup of any x402 endpoint, without buying: whether it answers with a valid payment request, its x402 version and any problems in it, the prices and networks it asks for, its payTo wallets and response time.

Listed price
$0.002
Challenge detected
9 of the last 9 checks
Median response
376 ms
Last checked
16 Oct, 13:59 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://api.maxwellinternational.ai/v1/doctor/checkup
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
84 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://api.maxwellinternational.ai/v1

  • GET/edgar/company$0.005SEC EDGAR company profile for a ticker or CIK: SIC, fiscal year end, addresses, and recent filings.
  • GET/food/near$0.01Restaurants near me / near any location: restaurants, cafes and bars nearby within a radius (default 2 km, max 10) of a latitude/longitude, nearest first, with distance, cuisine, address, and where known opening hours, phone, website and menu availability. Where to eat, worldwide coverage of ski and mountain areas. No Google data.
  • GET/gov/de/open-data$0.005Search Germany's open data portal GovData by keyword, or fetch one dataset by id: title, publishing organization, last modified date, resource count and total match count.
  • GET/gov/eu/eurlex$0.005Laws of the European Union from EUR-Lex (Publications Office): search by title, or fetch one act by its official id, with title, in-force status, dates and the official link. An id or search not yet cached answers 404, not charged, and is fetched within about a minute.
  • GET/openfda/food/enforcement$0.005FDA food recalls (enforcement reports) from openFDA, newest first: matches product, firm or reason. Each recall has its number, class (I-III), status, reason, firm, dates, distribution and quantity. ?q=listeria; 10 by default, up to 25 with &limit=. Answers are cached for up to 24 hours.
  • GET/insider-info/early-openings$1Paid insider tips for ski and mountain travel, dated. Pass ?id=<tip-id> for one tip; the free status page lists what is available.
  • GET/gov/sk/accounts$0.01Annual accounts of one Slovak company from the official register of financial statements (RUZ), by company id (ICO): the latest statements (up to 20; statementCount is all filed) with period and filing dates; for the latest, key figures (assets, equity, turnover, profit after tax, with prior year) and every balance-sheet and income-statement line as filed, in euros; PDF links for the latest two. Uncached: 404, not charged.
  • GET/gov/au/legislation$0.005Laws of Australia from the Federal Register of Legislation: search by title, or fetch one act by its official id, with title, in-force status, dates and the official link. An id or search not yet cached answers 404, not charged, and is fetched within about a minute.
  • GET/weather/observation$0.005Most recent NWS station observation (by stationId, or the station nearest a lat/lon): temperature, dewpoint, wind, humidity, pressure, conditions, with observedAt showing when it was measured. From the NWS (US and territories), cached and refreshed about every 3 hours; a location not yet cached answers 404, is not charged, and is queued.
  • GET/gov/ca/open-data$0.005Search Canada's federal open data portal (open.canada.ca) by keyword, or fetch one dataset by id: English and French titles, publishing organization, last modified date, number of resources and the total match count.
  • GET/ski/operator$0.05Lift-operator network card (GOPASS: Jasna, Tatranska Lomnica, Strbske Pleso, Stary Smokovec, Jested, Spindleruv Mlyn, Szczyrk, Muttereralm, Molltaler Gletscher): per resort whether the operator's own shop sells day tickets or only season passes right now, checked weekly.
  • GET/gov/br/companies$0.005Businesses in Brazil from the Receita Federal CNPJ register (official monthly release), sole traders and MEI included. Search by name, trade name and town, or fetch one by CNPJ (14 digits, or the 8-digit root). Name, trade name, legal form, status, start date, main activity (CNAE), address, business phone and e-mail as filed, share capital, size. Sole traders: no CPF, address to town only. No match: 404, not charged.
  • POST/doctor/payment$0.005x402 Doctor: why a payment failed, in plain words: the cause, whose side it is on (your client, your wallet, the network, the seller or the facilitator) and how to fix it, from over 40 named causes (x402 and Coinbase facilitator codes, EVM and Solana, HTTP and network errors). Send the seller 402 as challenge and the error as response, by POST JSON or GET query. Unknown failures are reviewed nightly.
  • GET/gov/ca/legislation$0.005One Canadian federal act from the Justice Laws consolidated statutes, by code (e.g. C-46): English and French titles, in-force status, last amended and current-to dates, and optionally its section text.
  • GET/ski/inventory$0.01Ski resorts list for one country (US: one state), worldwide ski resort directory: each resort with region, operator, official site, ticket-shop and price-list links, currency and coordinates of the main lift or ticket office. No prices (see ski.prices).
  • GET/gov/au/open-data$0.005Search the national open data portal of Australia (data.gov.au) by keyword, or fetch one dataset by id: title, publishing organization, last modified date where the portal gives one, number of files and the official link, under the portal's licence terms (a dataset's own licence is on its official page). Uncached: 404, not charged, fetched within about a minute.
  • GET/doctor/checkup$0.002x402 Doctor checkup of any x402 endpoint, without buying: whether it answers with a valid payment request, its x402 version and any problems in it, the prices and networks it asks for, its payTo wallets and response time.
  • GET/openfda/drug/event$0.005FDA adverse event reports (FAERS) for a drug from openFDA, newest first: report id, date received, seriousness (death, hospitalisation, life-threatening), reactions, drugs taken and indication. ?q=metformin; 5 by default, up to 25 with &limit=. Cached for up to 24 hours. Reports are not proof the drug caused the event.
  • GET/gov/fr/open-data$0.005Search the national open data portal of France (data.gouv.fr) by keyword, or fetch one dataset by id: title, publishing organization, last modified date where the portal gives one, number of files and the official link, under the portal's licence terms (a dataset's own licence is on its official page). Uncached: 404, not charged, fetched within about a minute.
  • GET/weather/gridpoint$0.005NWS quantitative gridded forecast for a US point: time series for temperature, dewpoint, humidity, wind and gusts, sky cover, precipitation probability and amount, snowfall, ice, snow level, visibility, thunder probability, weather and hazards (about 7 days). Filter with fields= and hours=. From the NWS (US and territories), cached and refreshed about every 3 hours; a location not yet cached answers 404, is not charged, and is queued.
  • GET/food/venues$0.02Restaurants, cafes and bars in a ski area or mountain town (e.g. Liptov/Jasna): every place to eat and drink with type, cuisine, address, coordinates, and where known opening hours, phone, website and whether a menu is available. Hours from OpenStreetMap, the restaurant's website or Wolt. No Google data.
  • GET/gov/pl/legislation$0.005Laws of Poland from the Sejm ELI API: search by title, or fetch one act by its official id, with title, in-force status, dates and the official link. An id or search not yet cached answers 404, not charged, and is fetched within about a minute.
  • GET/weather/discussion$0.005Latest NWS Area Forecast Discussion (forecaster reasoning, confidence, key messages, aviation) for a forecast office or the office covering a US point, split into sections; text=0 omits the raw product. From the NWS (US and territories), cached and refreshed about every 3 hours; a location not yet cached answers 404, is not charged, and is queued.
  • GET/edgar/search$0.005Look up SEC EDGAR companies by ticker or name; returns CIK, ticker, and company name.
  • GET/trip/getting-there$0.01How to get to a ski resort: ticket offices and lift bases (lifts, elevation, distance from the arrival point), nearest train stations, ski-bus routes and what the resort says about buses, parking near the lifts (capacity, fee, published prices, distance) and whether it fills up. Each answer repeats the trip map with the next step and bundle price. OpenStreetMap plus the resort's own pages.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 84 listed endpoints. Next endpoints First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/api.maxwellinternational.ai

Recent checks

2 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026
All 9 checks
When (UTC)ResultHTTPResponse
16 Oct, 13:59 UTCChallenge detected402347ms
15 Oct, 04:47 UTCChallenge detected402346ms
13 Oct, 20:45 UTCChallenge detected402363ms
11 Oct, 19:34 UTCChallenge detected402486ms
10 Oct, 03:32 UTCChallenge detected402378ms
8 Oct, 21:32 UTCChallenge detected402428ms
7 Oct, 21:31 UTCChallenge detected402376ms
6 Oct, 21:30 UTCChallenge detected402392ms
2 Oct, 17:03 UTCChallenge detected402350ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 13:59 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Maxwell x402?

Its listed price is $0.002.

What payment terms does Maxwell x402 advertise?

The listing advertises x402, Base, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Maxwell x402 listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

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