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/eu-deposit-ratesNo price listedAverage interest rate banks pay on new household time deposits (up to 1 year) and on overnight deposits in a euro area country; without a country, a ranking. Official ECB MFI interest rate statistics.
POST/fase-lunar-pagoNo price listedMoon phase on a date: name, illuminated percentage, lunar age and the next new and full moon dates. Local astronomical calculation.
POST/calculadora-liquidacion-prestamo-pagoNo price listedCollateralized DeFi loan (Aave/Compound style): health factor, current LTV, collateral liquidation price, drop it can withstand, extra borrowing room and how much to repay or add to reach a 1.5 health factor.
POST/v1/bitcoin-mining-profitabilityNo price listedBitcoin mining profitability now: hashprice (USD per TH/s per day) from the real subsidy and recent fees, and for your machine (hashrate, J/TH efficiency and power price) daily revenue, electricity cost, profit and break-even kWh price.
POST/v1/password-strengthNo 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/tx-transferencias-pagoNo price listedDecode what an EVM transaction moved: native value, every ERC-20 transfer (symbol, decimals, from, to, amount), ERC-721 and ERC-1155 NFT transfers, status, fee paid, contract created and method selector.
POST/v1/pubmed-searchNo price listedSearch biomedical literature indexed in PubMed, via OpenAlex (CC0): title, authors, journal, date, DOI, PMID, citation count and open-access link, newest first, with optional year filter. Metadata only (no abstracts).
POST/dex-buscar-pagoNo price listedSearch trading pairs on every DEX and chain by name, symbol or address: price, liquidity, 24h volume, market cap, 24h and 1h change and pair age, sorted by liquidity. Live from DEX Screener.
POST/v1/liquid-staking-ratesNo price listedOn-chain exchange rate of the main Ethereum liquid staking tokens (wstETH, rETH, cbETH, weETH, sfrxETH) against ETH, read from their contracts, with current APY from DefiLlama.
POST/protocolo-historico-pagoNo price listedTVL history of a DeFi protocol (up to 5 years): series, 7/30/90/365-day change, all-time high and drawdown from it, and current TVL by chain. Live from DefiLlama.
POST/tokenizadas-precios-pagoNo price listedDEX price on Solana of verified tokenized stocks and ETFs (xStocks and Ondo): token price, on-chain market cap, liquidity, holders and 24h change, for one ticker (NVDA, TSLA, SPY...) or all. Token prices from Jupiter, not exchange quotes.
POST/x402-facilitadores-pagoNo price listedStatus of x402 facilitators (who verify and settle payments): live check of each one's /supported endpoint with latency, x402 versions, schemes and networks, plus on-chain settled volume over 24h, 7d and 30d (x402-list data). Choose a facilitator or debug failing payments.
POST/v1/erc1155-balanceNo price listedHow many copies of an ERC-1155 token id a wallet holds (balanceOf), with the token URI. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
POST/wikipedia-tendencias-pagoNo price listedMost read Wikipedia articles in a language on a given day (yesterday by default): what people are looking up, with views and rank, technical pages removed. A signal of current events and trends.
POST/dex-tendencias-pagoNo price listedTokens getting attention on DEX Screener: top boosted (paid promotion, flagged as such), latest boosts or newest token profiles, with chain, address, description and social links. Filter by chain.
POST/v1/text-extract-entitiesNo price listedExtract from any text, without AI: emails, URLs, phone numbers, IBANs, EVM/Bitcoin/Solana addresses, transaction hashes, IPs, dates, amounts, hashtags, mentions and Spanish tax IDs, deduplicated.
POST/cabeceras-email-pagoNo price listedAnalyze raw email headers: sender, recipient, subject, server hops (Received) with delays, SPF/DKIM/DMARC results, Return-Path and Reply-To mismatches and spoofing signals, with a verdict. Investigate phishing or delivery issues. Nothing is stored.
POST/v1/mastodon-profileNo price listedMastodon profile (user@instance): followers, following, post count, bio, last activity and recent posts with engagement.
POST/v1/us-federal-registerNo price listedSearch the US Federal Register (official public-domain government record) by topic: proposed rules, final rules, notices and presidential documents, with agency, publication date, abstract and official link. Filter by type and recency. Complements SEC/CFTC RSS tracking.
POST/v1/defi-categoriesNo price listedDeFi TVL grouped by category (Lending, Dexs, Liquid Staking, CDP, Yield...): value locked, share of the total and number of protocols per category. Shows where the money is by product type. Live from DefiLlama.
POST/v1/bluesky-searchNo price listedSearch public Bluesky posts by keyword, top or latest, with author, text, likes, reposts, replies and link. Live from the AT Protocol public API.
POST/v1/chainlink-priceNo price listedTamper-resistant price from Chainlink Data Feeds on Base (ETH/USD, BTC/USD, USDC/USD, or any Chainlink aggregator address), with update time and staleness in seconds.
POST/v1/spain-contract-awardsNo price listedSpanish public contracts awarded to a company, or by a contracting authority, from official PLACSP open data: winners, awarded amounts (VAT excluded), dates and official links. Competitive intelligence for B2B agents.
POST/v1/multichain-balancesNo price listedOne address across five EVM chains (Base, Ethereum, Arbitrum, Optimism, Polygon): native coin and USDC balance per chain and total USD value.
POST/v1/company-filingsNo price listedLatest regulatory filings of a US listed company (8-K material events, 10-Q, 10-K, insider Form 4, 13D/G...) with date, 8-K items and direct document link. Optional filter by form type.

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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