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: 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/eu-populationNo price listedPopulation on 1 January of every European country (ranking) or the evolution of one with annual growth. Official Eurostat data.
POST/v1/x402-trendingNo price listedMost used x402 paid services from the public x402 Bazaar catalog: unique payers and calls in 30 days, price, networks and description, plus ecosystem totals. Optional keyword filter. See what agents actually buy.
POST/v1/sui-walletNo price listedSui wallet balances: SUI and every other token with amount, decimals and USD value where priced, plus the wallet total.
POST/validar-iva-pagoNo price listedEU VAT number format validation for all member states (plus Spanish check digit). Does not query VIES.
POST/cotizacion-dex-pagoNo price listedOn-chain swap quote on Base from Uniswap v3 QuoterV2 across all fee tiers (0.01%, 0.05%, 0.3%, 1%): output amount, unit price, best pool and gas estimate. Accepts symbols (WETH/ETH, USDC, USDT, DAI, cbBTC) or token addresses. Read-only, no swap executed.
POST/utxo-saldo-pagoNo price listedBalance of a Litecoin, Dogecoin or Dash address (detected from the prefix if not given): confirmed and pending balance, total received and sent, transaction count and USD value.
POST/precio-divisa-pagoNo price listedCrypto price in any ECB currency (EUR, GBP, JPY, CHF...): on-chain USD price (Chainlink or Uniswap v3) converted with ECB reference rates.
POST/liquidaciones-pagoNo price listedDeFi liquidations read on-chain from Aave v3 on Base, Ethereum, Arbitrum, Optimism and Polygon: total USD liquidated, event count, breakdown by network, collateral and debt asset, and latest events with explorer links. Window 1-24h, optional asset filter.
POST/evm-tokens-cartera-pagoNo price listedEvery ERC-20 token held by an EVM address (not just the majors) with amount, price and USD value when quoted, token holder count and reputation (scam-flagged tokens hidden by default), plus native balance and total USD.
POST/v1/xrpl-oraclesNo price listedOn-chain price oracles of an XRPL account (e.g. DIA): every price pair with its value, provider and last update.
POST/v1/timezone-by-coordinatesNo price listedIANA time zone of any point on Earth from its coordinates, computed locally, with the current local time there, UTC offset and daylight saving flag.
POST/indicadores-pais-pagoNo price listedKey indicators of any country: GDP, real growth, GDP per capita, inflation, population, unemployment, public debt, exports, life expectancy and internet use, with the last years of each. World Bank open data.
POST/v1/bic-validateNo price listedBIC/SWIFT code validation and parsing: bank, country, location and branch codes, test-code flag.
POST/v1/loan-calculatorNo price listedLoan or mortgage with French amortization (fixed installment): monthly payment, total paid, total interest, approximate APR (TAE) including fees, and a yearly or monthly amortization schedule.
POST/v1/pypi-packageNo price listedPython package profile from PyPI: latest version and date, summary, license, required Python, links, dependencies, number of versions and yanked flag.
POST/zona-horaria-pagoNo price listedConvert a date and time (or now) from one IANA time zone to up to 25 others: local time, UTC offset, abbreviation, daylight saving flag, weekday, hour difference, UTC and Unix timestamp.
POST/v1/extractive-summaryNo price listedExtractive summary without AI: picks the most representative sentences (term frequency and position scoring) and returns them in original order, with the reduction percentage. Deterministic and instant.
POST/protocolo-auditorias-pagoNo price listedSecurity profile of a DeFi protocol by name (Aave, Curve, Pendle...): number of audits and their links, hacks suffered, TVL broken down by chain, category and market cap. More audits and zero hacks is a better signal. Live from DefiLlama.
POST/erc20-aprobaciones-pagoNo price listedWhich contracts a wallet has allowed to move its ERC-20 tokens: checks the chain's main tokens (or the ones you pass) over recent blocks plus common spenders (Uniswap routers, Permit2), returning the live allowance and flagging unlimited ones. Find and revoke what you don't use. Usually 2-10 s. Not available on Arbitrum (its public nodes keep no log history); on some chains the public node limits how far back it can search (reported in the result).
POST/ricos-red-pagoNo price listedAddresses with the most native coin on an EVM chain (ETH on Ethereum, Base, Arbitrum, Optimism, zkSync; POL on Polygon): balance, name or label when known (exchanges, bridges, contracts) and transaction count.
POST/apr-apy-pagoNo price listedConvert APR to APY or APY to APR for any compounding frequency (continuous, daily, hourly, per block...) and optionally project the final value and gain of a deposit over N days. Useful to compare DeFi yields.
POST/numero-a-letras-pagoNo price listedWrite a number or money amount in words, in Spanish or English (EUR, USD, GBP, MXN), with correct Spanish apocope (veintiún, un millón de euros). For invoices, cheques and contracts.
POST/v1/sec-company-rankingNo price listedRank US listed companies by a figure from their SEC filings (revenue, net income, assets, cash, long-term debt, R&D, dividends paid or buybacks) for a year (CY2025) or quarter (CY2026Q1), with ticker and exchange.
POST/estables-historico-pagoNo price listedTotal stablecoin market capitalization (crypto's dry powder) with series, 7/30/90/365-day change and split by peg currency (USD, EUR...). Live from DefiLlama.
POST/solana-tokens-tendencia-pagoNo price listedTrending Solana tokens by organic score (real activity, not bots) over 5m/1h/6h/24h, or the newest tokens, with price, market cap, liquidity, holders, change, verification and risk flags (mint/freeze authority, holder concentration, low liquidity). From Jupiter.

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)	Result	HTTP	Response
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 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.

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 17 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

Also live on x402 · Base

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Actor, API & Scraper MonitorCatch drift when everything still looks green.

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