Discover / api.vextorium.com

Historical ECB rates | Vextorium

■ Challenge detected

Historical ECB euro reference exchange rate for any date since 1999 and conversion between any two published currencies.

Listed price
$0.003
Challenge detected
3 of the last 9 checks
Median response
395 ms
Last checked
17 Oct, 07:50 UTC
In our index since
27 Sept 2026

Endpoint

curl -i https://api.vextorium.com/v1/ecb-rates-history
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
1,069 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.vextorium.com

  • POST/v1/spain-ine-indicatorsNo price listedOfficial Spanish indicators from INE: CPI (annual and monthly change), EPA unemployment rate (total and under 25) and house prices (annual and quarterly change), with recent periods. Without an indicator it returns the latest value of all.
  • POST/v1/url-redirectsNo price listedFollow the redirect chain of a URL (up to 10 hops): status code and time of each hop, final URL, domain changes and HTTPS-to-HTTP downgrades. Unmask short and affiliate links before visiting them.
  • POST/v1/address-type-batchNo price listedClassify up to 50 EVM addresses at once: regular wallet (EOA), EIP-7702 delegated wallet or contract, with code size. Filter airdrop lists, spot contracts or bots. 12 chains.
  • POST/polymarket-holders-pagoNo price listedLargest holders of each outcome of a Polymarket market (by slug): wallet and shares, with the sum of the top holders. See where the whales are betting.
  • POST/polymarket-mercados-pagoNo price listedOpen Polymarket prediction markets: top by 24h volume or liquidity, or matching a search (elections, crypto, sports, economy...), with the implied probability of each outcome, volume, liquidity and close date.
  • POST/v1/evm-storageNo price listedRead a raw storage slot of a contract (decimal, hex or the standard EIP-1967 implementation/admin/beacon slots), as integer and as address, at any block. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
  • POST/aave-comparar-pagoNo price listedCompare Aave v3 across all supported chains (Base, Ethereum, Arbitrum, Optimism, Polygon) for one token: where you earn the most supplying it, or pay the least borrowing it. Returns the best chain and the deposit/borrow APY on every chain. Live on-chain data.
  • POST/dominio-disponible-pagoNo price listedCheck whether up to 20 domains are registered or free using each registry's official RDAP service, with creation and expiry dates, registrar and status. Some country TLDs (.es, .de...) have no public RDAP and are reported as unknown.
  • POST/evm-historial-pagoNo price listedTransaction history of an EVM address (Ethereum, Base, Arbitrum, Optimism, Polygon, zkSync): date, method called, from, to (named when known), value, fee, status and revert reason, plus total fees paid.
  • POST/tron-coste-envio-pagoNo price listedWhat it costs right now to send USDT (TRC-20) and TRX on Tron: energy and bandwidth prices, typical energy of a USDT transfer to an address with and without USDT, and the TRX burned if you have no resources.
  • POST/v1/eu-government-deficitNo price listedAnnual government deficit (-) or surplus (+) as % of GDP for any European country; without a country, a ranking. Official Eurostat data.
  • POST/v1/gas-historyNo price listedFee history of the last N blocks on an EVM chain (eth_feeHistory): base fee per block, gas usage and priority tips at the 10th, 50th and 90th percentiles, with a tip recommendation to get included fast. 12 chains.
  • POST/v1/dex-searchNo price listedSearch trading pairs on every DEX and chain by name, symbol or address: price, liquidity, 24h volume, market cap, 24h and 1h change and pair age, sorted by liquidity. Live from DEX Screener.
  • POST/v1/us-crypto-regulationNo price listedLatest official US government documents that affect crypto and markets: SEC press releases, litigation releases, statements and speeches, CFTC press releases, White House news and presidential actions. Filter by crypto relevance, source, keyword and days; optional 2-3 sentence AI summary of each document (Spanish or English). Public-domain sources with links to the originals.
  • POST/v1/coordinate-convertNo price listedConvert coordinates between decimal degrees, degrees-minutes-seconds (40°25'00"N), UTM (zone, easting, northing) and geohash, in any direction, plus a map link.
  • POST/v1/nostr-profileNo price listedNostr profile by npub, hex key or NIP-05 identifier (name@domain): name, bio, picture, website, NIP-05, Lightning address and latest public notes, queried from several public relays.
  • POST/wikidata-entidad-pagoNo price listedStructured facts from Wikidata about a person, company, place or work by name or Q-id: type, country, population, dates, founders, headquarters, website, ticker, currency, version... labelled in your language. Grounded answers without free text.
  • POST/pib-ue-pagoNo price listedReal quarterly GDP growth (seasonally adjusted) of any European country, the EU or the euro area: quarter-on-quarter and year-on-year; without a country, a ranking for the latest quarter. Official Eurostat data.
  • POST/v1/solana-balances-batchNo price listedSOL balance (and optionally one SPL token) of up to 50 Solana wallets in one call, with totals.
  • POST/empresa-dominio-pagoNo price listedCompany profile from its domain, without personal data: website title and description, social profiles, technologies used, email provider, domain age and registrar, SSL certificate and hosting country. Qualify B2B leads or vet a supplier.
  • POST/v1/tokenized-stock-checkNo price listedAnti-scam check for tokenized stocks on Solana: tells whether a token mint was issued by an official issuer (xStocks/Backed, Ondo) via its mint authority, or is a POSSIBLE IMITATION posing as one.
  • POST/plan-ahorro-pagoNo price listedSavings or investment plan with monthly contributions and compound interest: final value, total contributed, interest earned, value in today's money after inflation, yearly evolution and the monthly amount needed to reach a goal.
  • POST/polymarket-cartera-pagoNo price listedOpen positions of a wallet on Polymarket: market, outcome, shares, average and current price, value, PnL (USD and %), redeemable flag and close date, with portfolio totals.
  • POST/decodificar-firma-pagoNo price listedTranslates a 4-byte function selector (e.g. 0xa9059cbb) or a 32-byte event topic into its human-readable signature (e.g. transfer(address,uint256)). Essential for an agent reading or verifying transactions. Live from 4byte.directory.
  • POST/v1/new-safe-tokensNo price listedFreshly launched tokens that pass safety filters: on Solana the latest DEX Screener profiles and boosts, on Base/Ethereum pools created in the last hour. Each candidate is checked for minimum liquidity, contract risk and volume authenticity; only those that pass are returned. Not buy recommendations.

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

Showing 25 of 1,069 listed endpoints. Next endpoints First endpoints

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

Recent checks

4 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.17 Oct 2026
All 9 checks
When (UTC)ResultHTTPResponse
17 Oct, 07:50 UTCChallenge detected402372ms
15 Oct, 23:42 UTCChallenge detected402395ms
14 Oct, 19:26 UTCChallenge detected402417ms
12 Oct, 22:31 UTCNo challenge detected200423ms
11 Oct, 00:15 UTCNo challenge detected200394ms
9 Oct, 15:32 UTCNo challenge detected200382ms
8 Oct, 09:33 UTCNo challenge detected200429ms
7 Oct, 03:32 UTCNo challenge detected200376ms
4 Oct, 17:05 UTCNo challenge detected200394ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 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 Historical ECB rates | Vextorium?

Its listed price is $0.003.

What payment terms does Historical ECB rates | Vextorium advertise?

The listing advertises x402, Base, EVM chain 5042, Optimism, Polygon, Solana, Xrpl, USDC and XRP. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Historical ECB rates | Vextorium listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 27 Sept 2026.

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