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/bluesky-followersNo price listedFollowers of a Bluesky profile (most recent first) with handle, name, bio and profile link, plus the total follower count.
POST/v1/staking-calculatorNo price listedStaking rewards: final amount, total rewards and average per day and month, with daily compounding or simple, after validator commission, in tokens and optionally in USD.
POST/verificar-jwt-pagoNo price listedDecode a JWT and verify its signature with the public keys of a JWKS URL (RS256, ES256, EdDSA...) or an HMAC secret, checking expiry, audience and issuer; returns header, claims and the exact reason if invalid. Tokens are not stored.
POST/geocodificar-inverso-es-pagoNo price listedNearest address to coordinates in Spain with the official CartoCiudad reverse geocoder (IGN): street and number, postcode, municipality, INE code, province, region and cadastral reference.
POST/v1/qr-barcode-readNo price listedRead the codes in an image URL: QR, Data Matrix, Aztec, PDF417, EAN-13, UPC, Code 128, Code 39... with format, content and position; flags URLs, crypto payment URIs (bitcoin:, ethereum:, solana:) and wifi credentials.
POST/hyperliquid-basis-pagoNo price listedBasis of Hyperliquid perpetuals: mark vs oracle (spot) price in basis points, premium, hourly and annualized funding and open interest; ranked by funding extremes or for one asset. For basis and cash-and-carry strategies.
POST/arxiv-buscar-pagoNo price listedSearch scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...).
POST/v1/ssl-certificateNo price listedTLS certificate of a domain: issuer, validity dates, days until expiry, names covered (SAN), whether it matches the domain and is trusted, TLS version and cipher. For uptime and security monitoring.
POST/v1/wikipedia-trendingNo 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/v1/llms-txt-readNo price listedRead a website's /llms.txt (the standard that tells LLMs what a site is about) as structured data: title, summary, sections with links and descriptions, and whether llms-full.txt exists.
POST/v1/spain-power-mixNo 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/us-company-searchNo price listedSearch US listed companies registered with the SEC by name or ticker: ticker, official name, CIK and exchange (Nasdaq, NYSE...). Get the right ticker before asking for filings or fundamentals.
POST/detectar-tecnologias-pagoNo price listedDetect the technologies behind a website: CMS (WordPress, Shopify...), frameworks (Next.js, React...), server and CDN, analytics, payments, chat, cookie manager, captcha and fonts, from HTML and headers. For lead generation and competitive research.
POST/extraer-datos-texto-pagoNo 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/v1/defi-yieldsNo price listedBest-yielding DeFi liquidity pools across the WHOLE market (~17,000 pools, every chain and protocol: Uniswap, Aave, Curve, Aerodrome, Raydium…), from DefiLlama open data. Filter by token or pair (USDC, WETH, NVDA, SP500…), chain, protocol, minimum TVL, stablecoin-only or single-asset (no impermanent loss), min/max APY. Sort by APY, 7-day APY trend or TVL. Each pool: APY (base+rewards), TVL, 7d/30d trend, IL risk, exposure and a link. Broader than a single-protocol scanner.
POST/v1/summarize-urlNo price listedReads a public web page and returns a concise summary with local AI (Qwen3), in English or the language you choose.
POST/v1/stellar-accountNo price listedStellar account: XLM and every asset balance (USDC, EURC...) with issuer, signers and thresholds, subentries and USD value.
POST/v1/hyperliquid-spotNo price listedHyperliquid spot pairs: price, 24h change, 24h volume and market cap (circulating supply x price). Search a token or rank by volume, market cap, gainers or losers.
POST/v1/airport-lookupNo price listedFind airports by IATA/ICAO code, name or city, or the nearest to coordinates: name, codes, city, country, coordinates, elevation and scheduled service. OurAirports open data.
POST/v1/dns-propagationNo price listedCheck DNS propagation of a record across 8 public resolvers worldwide (Google, Cloudflare, Quad9, OpenDNS, AdGuard...): each answer and TTL and whether they all agree. Use after changing DNS.
POST/v1/market-sentimentNo price listedMarket sentiment of any text (news, posts, tweets; any language) via local AI (Qwen3-4B): bullish / bearish / neutral, score -1 to 1, confidence, mentioned assets and a short reason.
POST/v1/hyperliquid-funding-historyNo price listedHourly funding history of a Hyperliquid perpetual over 1-30 days: average, max, min, % of positive hours, annualized rate and a daily series. For carry and basis strategies.
POST/v1/public-rpcsNo price listedKeyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.
POST/mcp-inspeccionar-pagoNo price listedConnect to a remote MCP server (Streamable HTTP) as a client and return its name, version, instructions, capabilities and tool list with descriptions and parameters, without calling any tool. Know what an MCP server offers before trusting it.
POST/v1/xrpl-mptNo price listedMulti-Purpose Tokens (MPT, for real-world assets) issued by an XRPL account: max and outstanding supply, decimals, transfer fee, flags (transfer, clawback, lock) and metadata.

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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