Discover / market-calendar-api.onrender.com

Market Calendar API

■ Challenge detected

Lists US Treasury auctions (bills, notes, bonds, TIPS, FRNs) in a date range: announced upcoming auctions and results of past ones (high yield/rate, bid-to-cover).

Listed price
$0.0013
Challenge detected
1 of the last check
Median response
196 ms
Last checked
19 Oct, 18:24 UTC
In our index since
19 Oct 2026

Endpoint

curl -i https://market-calendar-api.onrender.com/v1/auctions
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
12 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://market-calendar-api.onrender.com/v1

  • GET/rebalance$0.002Returns index rebalancing and reconstitution dates (S&P 500, Nasdaq-100, Russell US semi-annual, DAX reviews) for a year: effective-after-close date and first trading day with new weights.
  • GET/auctions$0.0013Lists US Treasury auctions (bills, notes, bonds, TIPS, FRNs) in a date range: announced upcoming auctions and results of past ones (high yield/rate, bid-to-cover).
  • GET/vix-expiry$0.001Returns the next VIX futures and options expiration dates (Wednesday rule, holiday-adjusted).
  • GET/releases$0.0011Lists scheduled US economic releases (CPI, NFP, PPI, GDP, PCE) in a date range with times in ET and UTC.
  • GET/opex-calendar$0.001Returns all monthly options expiration dates of a year for US equity options, VIX and Eurex, holiday-adjusted, with triple witching flags.
  • GET/meetings$0.0012Lists all Fed (FOMC) and ECB monetary policy meetings of a year with decision and press conference times.
  • GET/next-auction$0.0013Returns the next announced US Treasury auction, optionally for a term such as 2-Year or 13-Week.
  • GET/is-banking-day$0.0014Tells whether a date is a banking/settlement day for euro payments (TARGET2/SEPA), US Fedwire or Switzerland (SIX), with the reason and the next banking day.
  • GET/next-meeting$0.0012Returns the next Federal Reserve (FOMC) and/or ECB monetary policy decision with statement and press conference times in local time and UTC, and whether projections are published.
  • GET/opex$0.001Tells whether a date is a US monthly options expiration, triple witching, weekly expiration, VIX expiration or Eurex expiration (holiday-adjusted), and returns the next ones.
  • GET/next-release$0.0011Returns the next scheduled release of a US economic indicator (CPI, NFP, PPI, GDP, PCE) with exact time in ET and UTC and the reference period, from official BLS/BEA calendars.
  • GET/banking-holidays$0.0014Lists the banking/settlement holidays of a year for TARGET2 (euro), US Fedwire or Switzerland (SIX).

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

Showing 12 of 12 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/market-calendar-api.onrender.com

Recent checks

19 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.19 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
19 Oct, 18:24 UTCChallenge detected402196ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 19 Oct, 18:24 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 Market Calendar API?

Its listed price is $0.0013.

What payment terms does Market Calendar API advertise?

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

Where is Market Calendar API listed?

In x402 Bazaar. Superstables first indexed it on 19 Oct 2026.

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