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
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/defi-feesNo price listedDeFi protocols ranked by the fees users pay them (24h, 7d, 30d), with category and 7d trend. Optional per chain. High, steady fees = a real business. Live from DefiLlama.
  • POST/v1/text-transformNo price listedTransform text: URL slug, remove accents, ASCII, snake_case, camelCase, PascalCase, kebab-case, CONSTANT_CASE, Title, upper, lower, reverse, strip HTML, normalize whitespace and Unicode (NFC/NFKC). One or all at once.
  • POST/validar-nif-pagoNo price listedSpanish tax ID validation (DNI/NIF, NIE and company CIF) with check-digit verification. Computed locally; the ID is not stored.
  • POST/v1/wayback-snapshotNo price listedCheck whether a page is saved in Internet Archive's Wayback Machine and get the snapshot closest to a date (or the latest), with its link. See how a site looked or recover deleted content.
  • POST/base-numerica-pagoNo price listedConvert integers of any size (signed) between bases 2 to 36: binary, octal, decimal, hex, base32, base36, with bit and byte length and two's complement. Accepts 0x/0b/0o prefixes.
  • POST/sol-suministro-token-pagoNo price listedTotal supply of a Solana token with decimals, mint authority, freeze authority and token program.
  • POST/hyperliquid-vault-pagoNo price listedHyperliquid vault (HLP or a trader's vault): APR, assets under management, PnL over 1 day, 7 days, 30 days and all time, depositors, leader commission and share, and whether it accepts deposits.
  • POST/v1/color-contrastNo price listedConvert a color between HEX, RGB, HSL, HSV and CMYK and, given a background, compute the WCAG 2.x contrast ratio with AA/AAA pass flags; without background, suggests black or white text.
  • POST/v1/hyperliquid-candlesNo price listedOHLCV candles of a Hyperliquid perpetual (1m, 5m, 15m, 1h, 4h, 1d, 1w; up to 500) with period change, high, low and annualized volatility. Prices from Hyperliquid's own open market.
  • POST/safe-multisig-pagoNo price listedInspect a Safe (Gnosis Safe) multisig on Base, Ethereum, Arbitrum, Optimism or Polygon: owners, signature threshold (M of N), nonce, version and enabled modules, with warnings (single-signer, modules that bypass owners).
  • POST/v1/evm-signature-verifyNo price listedVerify an Ethereum signature: a personal_sign (EIP-191) message or EIP-712 typed data. Recovers the signer address and, if you pass one, confirms it matches. Local computation; EIP-1271 contract wallets are not covered.
  • POST/v1/translateNo price listedTranslate text to any language with local AI (Qwen3-4B), preserving formatting, names and numbers; detects the source language.
  • POST/v1/new-defi-protocolsNo price listedDeFi protocols added to DefiLlama in the last N days with TVL, category, chains, whether they have a token and links. Discover new projects early.
  • POST/sol-dominio-pagoNo price listedResolve a Solana Name Service .sol domain to its owner wallet, read directly on-chain (NFT-tokenized domains resolve to the NFT holder).
  • POST/v1/world-house-pricesNo price listedHouse prices in Europe (Eurostat house price index): nominal year-on-year change of the latest quarter, as a ranking of about 30 European countries or for one country.
  • POST/v1/portfolio-valuationNo price listedValue a crypto portfolio such as {"BTC": 0.1, "ETH": 2}: current value and weight of each holding and total; with a start date, its value then, return, annualized volatility and maximum drawdown. Prices from DefiLlama.
  • POST/v1/text-extract-numbersNo price listedExtract and normalize every number in a text: amounts with currency (€, $, USDC, BTC...), percentages, multipliers (k, million, bn) and plain figures, understanding both 1.234,56 and 1,234.56, with totals per currency.
  • POST/v1/hyperliquid-validatorsNo price listedHyperliquid validators for HYPE staking: name, stake and share, commission, active or jailed, recent blocks, daily uptime and predicted APR. Choose where to delegate HYPE.
  • POST/v1/contract-eventsNo price listedLatest events emitted by an EVM contract from the event signature (e.g. Transfer(address indexed from,address indexed to,uint256 value)), decoded with parameter names, block and transaction hash, over the last N blocks.

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

Showing 19 of 1,069 listed 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)ResultHTTPResponse
18 Oct, 09:23 UTCChallenge detected402380ms
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 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.

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