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/world-inflationNo price listedYear-on-year inflation: for European countries the monthly harmonised CPI from Eurostat, for the rest the annual CPI inflation of the World Bank; without a country, a world ranking (latest year available, World Bank).
POST/v1/us-treasury-fx-ratesNo price listedOfficial US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country.
POST/regimen-mercado-pagoNo price listedCrypto market regime in one call: BTC and ETH trend vs 50/200-day averages, 30-day realized volatility, open-interest-weighted perp funding, Fear & Greed and stablecoin supply change, scored into risk-on / neutral / risk-off with every signal explained.
POST/v1/page-linksNo price listedAll links on a page classified as internal or external, with anchor text, nofollow/sponsored, new-tab flags and the most linked external domains. For SEO, crawling and audits.
POST/boe-sumario-pagoNo price listedSpanish Official State Gazette (BOE) daily summary: every item of a given day with section, department and official links, filterable by section (e.g. civil service exams 'oposiciones', appointments, public procurement), department or title keywords.
POST/geo-distancia-pagoNo price listedDistance between two coordinates (Vincenty geodesic on WGS84 plus great-circle), in km, miles and nautical miles, initial bearing and compass direction, midpoint and estimated time on foot, by car and by plane.
POST/v1/wikipedia-summaryNo price listedSummary of a Wikipedia article in any language: title, short description, lead paragraph, image, coordinates, link and Wikidata id. If the title is not exact it returns the closest article, flagged as approximate, with alternatives.
POST/v1/tron-balanceNo price listedBalance of a Tron address: TRX (free and staked), TRC-20 tokens (USDT, USDC, USDD...) and the bandwidth and energy available to send without fees. Live from a public Tron node.
POST/traducir-pagoNo price listedTranslate text to any language with local AI (Qwen3-4B), preserving formatting, names and numbers; detects the source language.
POST/v1/roman-numeralsNo price listedConvert Arabic numbers to Roman numerals (1-3999) and Roman to Arabic, validating the canonical form (MCMXCIV) and suggesting the correct one.
POST/v1/stablecoins-by-chainNo price listedHow stablecoin money is spread across blockchains: circulating stablecoin value per chain, each chain's share and the total. Shows where the dry powder (liquidity ready to buy) actually sits. Live from DefiLlama.
POST/v1/eu-gas-pricesNo price listedAverage household natural gas price (20-200 GJ/year band) in EUR/kWh by European country, with or without taxes: ranking or half-yearly evolution of one country. Official Eurostat data.
POST/v1/gas-more-chainsNo price listedGas price and latest block right now on BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain, with the cost of a simple transfer in native coin.
POST/v1/public-holidaysNo price listedOfficial public holidays of 150+ countries and their regions (Spanish autonomous communities, US states, German Länder...) for a year, whether a given date is a holiday, and the next holiday.
POST/gas-precios-ue-pagoNo price listedAverage household natural gas price (20-200 GJ/year band) in EUR/kWh by European country, with or without taxes: ranking or half-yearly evolution of one country. Official Eurostat data.
POST/catalogo-tokenizadas-pagoNo price listedCatalog of 113 verified tokenized stocks (xStocks/Backed and Ondo Global Markets). With a ticker: all its tokenized versions (issuer, symbol, chain, mint). Without it: the full list, filterable by issuer, with totals and issuer breakdown. Verified on-chain by the issuing authority.
POST/v1/eu-minimum-wagesNo price listedGross monthly minimum wage in euros of European countries that have one (ranking), or the evolution for one country. Official Eurostat data.
POST/fuerza-contrasena-pagoNo price listedEstimate password strength with Dropbox's zxcvbn: score 0-4, estimated guesses and crack time for online and offline attacks, weak patterns found (dictionary, dates, sequences...) and tips. Evaluated in memory, never stored or logged.
POST/v1/eu-industrial-productionNo price listedIndustrial production (total industry excluding construction, calendar adjusted): year-on-year monthly change for any European country, the EU or the euro area; without a country, a ranking. Official Eurostat data.
POST/v1/evm-is-contractNo price listedWhether an address is a contract or a wallet: bytecode size and hash, EIP-7702 delegation and EIP-1167 minimal proxy detection. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
POST/v1/polymarket-holdersNo 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/enlaces-pagina-pagoNo price listedAll links on a page classified as internal or external, with anchor text, nofollow/sponsored, new-tab flags and the most linked external domains. For SEO, crawling and audits.
POST/dns-consulta-pagoNo price listedDNS records of a domain with TTL: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, HTTPS. Choose the types or get the common ones at once.
POST/mix-electrico-espana-pagoNo price listedSpain's electricity generation mix for a day: MWh and share by technology (wind, solar, nuclear, combined cycle, hydro...) and renewable percentage. Red Electrica de Espana data.
POST/v1/stablecoin-mints-burnsNo price listedStablecoin mints and burns over the last hours read from the contracts: USDC and USDT on Ethereum and USDC on Base, with totals, counts, largest operations and net flow. A signal of money entering or leaving crypto.

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

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