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.

x402
Base
EVM chain 5042
Optimism
Polygon
Solana
Xrpl
USDC
XRP
Blockchain

Listed price: $0.003
Challenge detected: 4 of the last 10 checks
Median response: 388 ms
Last checked: 18 Oct, 09:23 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-electricity-demandNo price listedDaily electricity demand in Spain (MWh) for the last N days with average, peak and low days and change versus the previous half of the period. Red Electrica de Espana data.
POST/tiempo-mundo-pagoNo price listedWeather forecast for any place on Earth from the Norwegian Meteorological Institute: current conditions and daily max/min temperature, precipitation, wind, cloud cover, humidity, pressure and sky state for up to 9 days.
POST/v1/dex-volumeNo price listedDecentralized exchanges ranked by traded volume (24h and 7d), each with its market share and 7d change, plus total volume. Optional per chain (great to see who leads on Base, Solana...). Live from DefiLlama.
POST/doi-info-pagoNo price listedMetadata of a publication by DOI (Crossref): title, authors, journal or publisher, year, type, citation count, references, license, link and an APA-formatted citation.
POST/v1/sui-transfersNo price listedSui wallet transfers of USDC (or SUI, or any token by coin type): latest incoming and outgoing movements with amount, counterparty, transaction sender, time and digest, plus totals in and out. Built for checking USDC payments on Sui (the network behind Samsung Wallet USDC).
POST/v1/uniswap-positionNo price listedUniswap v3 liquidity position by NFT id: pair, fee tier, price range, current price and in-range flag, liquidity, uncollected fees recorded and owner. Base, Ethereum, Arbitrum, Optimism and Polygon.
POST/cabeceras-seguridad-pagoNo price listedWebsite security headers audit: HTTPS, HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy and cookie flags, with a score.
POST/defi-rendimientos-pago$0.012Best-yielding DeFi liquidity pools across the WHOLE market (~17,000 pools, every chain and protocol: Uniswap, Aave, Curve, Aerodrome, Raydium…), from DefiLlama open data. Filter by token or pair (USDC, WETH, NVDA, SP500…), chain, protocol, minimum TVL, stablecoin-only or single-asset (no impermanent loss), min/max APY. Sort by APY, 7-day APY trend or TVL. Each pool: APY (base+rewards), TVL, 7d/30d trend, IL risk, exposure and a link. Broader than a single-protocol scanner.
POST/v1/asn-infoNo price listedInformation about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 and IPv6 prefixes announced, approximate IPv4 addresses and a sample of prefixes. RIPEstat data.
POST/pdf-tablas-pagoNo price listedExtract the tables of a PDF (URL) as JSON rows with their page: financial reports, official lists, invoices... Works on text PDFs (not scans). Optional page range.
POST/morpho-vaults-pagoNo price listedMorpho lending vaults run by curators: name, deposited asset, chain, net APY, deposits in USD, fee and curator; filter by asset (USDC, WETH...) and chain, sort by deposits or APY.
POST/cadena-protocolos-pagoNo price listedRanking of the DeFi protocols with the most TVL on a specific chain (Base, Solana, Arbitrum, BSC...), with category, 7-day change and share of the chain's TVL. Optional category filter.
POST/v1/chain-infoNo price listedReference data for a blockchain by its chainId: name, gas/native token, block explorers, number of public RPCs and website. Utility for multi-chain agents. Live from chainid.network (ethereum-lists, open data).
POST/empresa-perfil-sec-pagoNo price listedOfficial profile of a US listed company from the SEC: name, CIK, industry (SIC), state of incorporation, fiscal year end, address, phone, tickers and exchanges, former names and latest filing.
POST/estado-tx-pago$0.004Transaction status by hash on Base or Ethereum: pending / confirmed / failed, block, confirmations, gas used, fee paid, created contract and explorer link.
POST/cosmos-cartera-pagoNo price listedWallet on Cosmos Hub (cosmos1...), Osmosis (osmo1...) or Celestia (celestia1...): token balances, staked amount per validator, pending rewards, unbonding and USD value. Also accepts a validator (valoper) address and shows its account.
POST/v1/tezos-accountNo price listedTezos account (tz1/tz2/tz3/KT1): XTZ balance, baker, staked amount, FA tokens, transaction count, first and last activity and USD value.
POST/v1/sec-8k-latestNo price listedMost recent 8-K current reports filed with the SEC (material events of US companies) with their items: earnings (2.02), material agreements (1.01), officer changes (5.02), acquisitions (2.01), bankruptcy (1.03)... Filter by item or company name.
POST/hyperliquid-ballenas-pagoNo price listedHow the 150 largest actively trading Hyperliquid accounts are positioned: per coin long and short notional, bias, number of whales on each side, average entry and unrealized PnL; or, for one coin, every whale position with entry, liquidation and leverage.
POST/vivienda-mundo-pagoNo price listedResidential property prices in about 60 economies: nominal and real (inflation-adjusted) year-on-year change of the latest quarter, as a ranking or for one country. Bank for International Settlements data.
POST/v1/world-newsNo price listedLatest headlines from international outlets via public RSS (BBC, NPR, The Guardian, Al Jazeera, DW, France 24), tech (TechCrunch, The Verge) or Spain (El País), newest first, with link to the article; keyword and time-window filters.
POST/v1/solana-signature-verifyNo price listedVerify an Ed25519 Solana signature (Phantom/Solflare signMessage) for a message and public key; signature in base58, base64 or hex. Local computation.
POST/catastro-coordenadas-pagoNo price listedCadastral parcel reference and address at given coordinates in Spain, to then query its data with catastro-inmueble. Official Catastro data.
POST/aave-mercados-pagoNo price listedEvery Aave market on a chain: per asset supply and borrow APY (with incentives), deposited and borrowed USD, utilization, max LTV, borrowable flag and available liquidity, plus totals. DefiLlama data.
POST/calcular-fechas-pagoNo price listedDate facts (weekday, ISO week, quarter, day of year, leap year), exact difference between two dates in years, months, days, weeks and Mon-Fri working days, and adding or subtracting days, months or years (end-of-month safe).

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.18 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
18 Oct, 09:23 UTC	Challenge detected	402	380ms
17 Oct, 07:50 UTC	Challenge detected	402	372ms
15 Oct, 23:42 UTC	Challenge detected	402	395ms
14 Oct, 19:26 UTC	Challenge detected	402	417ms
12 Oct, 22:31 UTC	No challenge detected	200	423ms
11 Oct, 00:15 UTC	No challenge detected	200	394ms
9 Oct, 15:32 UTC	No challenge detected	200	382ms
8 Oct, 09:33 UTC	No challenge detected	200	429ms
7 Oct, 03:32 UTC	No challenge detected	200	376ms
4 Oct, 17:05 UTC	No challenge detected	200	394ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 18 Oct, 09:23 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.

Payment

Protocol: x402 · exact
Chains: Base, EVM chain 5042, Optimism, Polygon, Solana, Xrpl
Asset: USDC, XRP
Amount: 3000 atomic USDC
Paid to: HcjfmZ…3pz2
Facilitator: cdp

From its payment challenge on 18 Oct 2026.

Check the seller's current payment challenge and authentication requirements before paying. A listing doesn't mean a service works with Superstables. To try a budget or a single purchase, see the services you can try on testnet.

Listed in

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Address RiskScreen an EVM wallet or contract address BEFORE paying it.

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