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/page-imagesNo price listedImages on a page with URL, alt text, declared size, lazy loading and format, counting images without alt text and flagging missing modern formats. For accessibility and SEO audits.
POST/pools-nuevos-pagoNo price listedPools created on DEXs in the last minutes (Uniswap v2/v3 and Aerodrome on Base; Uniswap v2/v3 on Ethereum) read from the factories: new token, paired token, DEX, block and, once DEX Screener indexes it, liquidity, price and volume. Spot launches early; check risk with token-veredicto.
POST/v1/pool-swapsNo price listedRecent swaps of a DEX pool (Uniswap v2/v3, Aerodrome, SushiSwap, PancakeSwap... on Base, Ethereum, Arbitrum, Optimism or Polygon) read on-chain: buys and sells with USD size, price, wallet and tx, net buy/sell flow, unique buyers and the largest trades. Pass the pool or the token address (its main pool is used).
POST/v1/subdomainsNo price listedSubdomains of a domain found in public Certificate Transparency logs (every TLS certificate issued): names, wildcard count and certificate dates. For asset inventory, audits and OSINT.
POST/v1/malicious-urlNo price listedCheck whether a URL or domain is listed in abuse.ch URLhaus as a malware distribution site in the last 30 days: exact URL match and other malicious URLs on the same host, with threat type, online/offline status and date. Use before an agent fetches or opens a link.
POST/investigacion-buscar-pagoNo price listedSearch scholarly literature across all fields in OpenAlex (250M+ works): title, authors, institutions, year, journal, citation count, DOI and open-access link; by relevance, citations or date.
POST/v1/format-convertNo price listedConvert data between JSON, CSV (auto-detects ; , tab |), YAML, XML and JSON Lines. E.g. a spreadsheet CSV to JSON for an agent, or JSON to CSV for Excel.
POST/v1/xrpl-swap-quoteNo price listedSwap quote on the XRP Ledger: how much you pay in one asset to receive an amount of another, through the best paths (DEX order books and AMM pools).
POST/calculadora-prestamo-pagoNo 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/analizar-user-agent-pagoNo price listedParse a User-Agent string: browser and version, OS and version, device brand and model, device type (mobile, tablet, desktop) and whether it is a bot, an AI crawler (GPTBot, ClaudeBot...) or an HTTP library.
POST/v1/docker-imageNo price listedDocker Hub image profile (official or user): description, stars, total pulls, last update and recent tags with size and architectures.
POST/poblacion-ue-pagoNo price listedPopulation on 1 January of every European country (ranking) or the evolution of one with annual growth. Official Eurostat data.
POST/v1/book-infoNo price listedBook data by ISBN (10 or 13) or search by title and author on Open Library: title, authors, publisher, year, pages, languages, subjects, cover and links.
POST/evm-suministro-pagoNo price listedtotalSupply of an ERC-20 token or ERC-721 collection with name, symbol and decimals. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
POST/v1/token-roastNo price listedA witty roast of any token (Base, Ethereum, Solana and other chains) with a shareable 1200x630 PNG card: grade BASED, MID, COOKED or RADIOACTIVE computed from real metrics (contract risk, liquidity, volume authenticity, age), a one-liner and a roast line. Deterministic, no AI. Entertainment, not financial advice.
POST/v1/sunrise-sunsetNo price listedSunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for coordinates and a date, in local time (zone detected from coordinates). Local astronomical calculation; handles polar night and midnight sun.
POST/convertir-formato-pagoNo price listedConvert data between JSON, CSV (auto-detects ; , tab |), YAML, XML and JSON Lines. E.g. a spreadsheet CSV to JSON for an agent, or JSON to CSV for Excel.
POST/v1/xrpl-lp-positionsNo price listedAMM liquidity positions of an XRPL account: share of each pool, the assets it represents and USD value, plus the total.
POST/v1/sui-networkNo price listedSui network status: epoch, reference gas price, latest checkpoint and its delay, recent transactions per second, SUI price and the compute cost of a simple transfer.
POST/v1/crate-packageNo price listedRust crate profile from crates.io: version, description, license, repository, docs, total and recent downloads, minimum Rust version, keywords and dates.
POST/v1/space-weatherNo price listedSpace weather now from NOAA SWPC: geomagnetic Kp index (recent hours and max), storm level (G0-G5), latest solar X-ray flares, solar wind speed and active alerts. Affects satellites, GPS and power grids.
POST/v1/economic-calendarNo price listedUpcoming macro events with UTC date and time: US BLS releases (jobs report, CPI, PPI, JOLTS, wages...), Federal Reserve FOMC rate decisions and ECB monetary policy decisions. Filter by days ahead, text or high-impact only.
POST/tron-transaccion-pagoNo price listedStatus of a Tron transaction by hash: success or failure, block, time, fee in TRX, energy and bandwidth used, and the TRX or TRC-20 (USDT...) transfers it contains. Confirm a USDT payment on Tron.
POST/v1/defi-revenueNo price listedDeFi protocols ranked by revenue (the share of fees the protocol/holders keep, not what goes to liquidity providers), 24h/7d/30d, with 7d trend. Optional per chain. Live from DefiLlama.
POST/v1/hedera-accountNo price listedHedera account (0.0.x or EVM address): HBAR balance, associated HTS tokens with balances, staking node, pending reward, creation date and USD value.

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

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.

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