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/licitaciones-ue-pagoNo price listedPublic tenders and contract awards from all EU countries published in TED (Official Journal of the EU) by keyword and country: title, buyer, notice type, date, tender deadline, estimated value, CPV codes and link. Option: only open tenders.
  • POST/v1/wallet-analysisNo price listedWallet analysis read directly from the blockchain on Base, Ethereum, Arbitrum, Optimism or Polygon (account type incl. smart wallet / EIP-7702, sent transaction count, ENS name, native and USDC/stablecoin balances with USD value); also Bitcoin and Solana balances.
  • POST/v1/fed-ratesNo price listedUS interest rates published by the Federal Reserve Board (H.15): effective fed funds rate with the FOMC target range, prime rate, discount window, commercial paper, Treasury bills, Treasury constant maturities (1 month to 30 years) and TIPS, for the latest business days. Public domain.
  • POST/subastas-tesoro-eeuu-pagoNo price listedUS Treasury debt auctions (bills, notes, bonds, TIPS, FRNs): upcoming announced auctions or recent results with term, offering amount, high yield and bid-to-cover demand. Official Fiscal Data.
  • POST/ens-perfil-pagoNo price listedENS profile: resolved address plus public text records (avatar, description, url, twitter, github, telegram, discord, email).
  • POST/v1/hyperliquid-pricesNo price listedCurrent mid price of every Hyperliquid asset, or the ones you ask for (BTC, ETH, SOL, HYPE...), in one fast and cheap call.
  • POST/v1/eth-burnNo price listedETH burned by the EIP-1559 base fee over the last N blocks versus estimated validator issuance: burned total, issuance, net supply change (deflationary or not) and its daily and yearly extrapolation.
  • POST/v1/solana-address-activityNo price listedRecent activity of a Solana address: latest transaction signatures with slot, time, success or failure and memo (up to 25).
  • POST/abi-decodificar-pagoNo price listedDecode EVM calldata (transaction input) with the function signature or, if omitted, by looking up the selector on 4byte; or decode return data with its output types (e.g. uint256,address).
  • POST/v1/defi-poolNo price listedDetail of one DeFi pool by its DefiLlama id: current APY (base and rewards), TVL, 7d/30d trend, impermanent-loss risk, exposure, and the APY/TVL evolution over the last 30 days with min and max. Use the id returned by the best-pools search.
  • POST/pdf-metadatos-pagoNo price listedMetadata and structure of a PDF (URL): pages, page size, title, author, creator, dates, version, encryption, form fields, attachments, bookmarks (table of contents) and whether it has extractable text or is a scan.
  • POST/v1/mastodon-trending-linksNo price listedNews and links most shared right now on a Mastodon instance, with title, site, description and shares today.
  • POST/v1/crypto-priceNo price listedCurrent price of up to 50 cryptocurrencies by ticker (BTC, ETH, SOL, XRP...) in USD or any ECB currency (EUR, GBP, JPY...). Covers the ~190 largest coins listed by alternative.me; currency conversion with ECB reference rates.
  • POST/v1/ecb-exchange-ratesNo price listedOfficial European Central Bank euro reference exchange rates (about 30 currencies) and currency conversion between any two of them, with reference date.
  • POST/v1/csv-cleanNo price listedCSV cleaning and normalization to JSON: column names, types, duplicates and empty values. Data is processed in memory and not stored.
  • POST/evm-codigo-pagoNo 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/mastodon-trending-postsNo price listedPosts with the most engagement right now on a Mastodon instance, with author, text, favourites, boosts and replies.
  • POST/gas-otras-redes-pagoNo 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/x402-inspectNo price listedCheck any x402 endpoint before paying, without paying: price in USD per network, asset (flags anything that is not official USDC), pay-to address and whether it is a contract, authorization timeout, Bazaar metadata, and risk alerts with a clear verdict.
  • POST/hora-utc-pagoNo price listedTrusted UTC time (NTP-synced server clock) with millisecond Unix timestamps, ISO week and the latest Ethereum and Base block times as independent references. For timestamping and clock checks.
  • POST/v1/ethereum-blobsNo price listedEthereum blob usage (EIP-4844, the data rollups post): current blob base fee in gwei and USD cost of one blob, blobs per block over the last N blocks and how often blocks were full.
  • POST/v1/xrpl-amm-poolNo price listedXRP Ledger AMM pool for a pair (XRP, RLUSD or CODE.rIssuer): both reserves with USD value, pool price, trading fee, LP token supply, auction slot and fee votes.
  • POST/v1/earthquakesNo price listedRecent earthquakes worldwide from the USGS: magnitude, place, depth, time, PAGER damage alert, tsunami flag and felt reports; filter by minimum magnitude, period (hour to month) and distance to coordinates.
  • POST/carburantes-ue-pagoNo price listedAverage price with taxes of petrol 95, diesel, heating oil and LPG in each EU country (European Commission Weekly Oil Bulletin), in EUR per litre, sorted cheapest first.
  • POST/v1/bitcoin-txNo price listedStatus of a Bitcoin transaction by txid: confirmed or in mempool, confirmations, block, total fee and fee rate (sat/vB), size, RBF flag, inputs and outputs with amounts.

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.

Something wrong on this page? Tell us.