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/eu-vat-viesNo price listedCheck in the European Commission's VIES whether an EU VAT number is registered for intra-community trade, with name and address where the country publishes them. Needed to invoice other EU businesses without VAT.
POST/redes-sociales-web-pagoNo price listedSocial media profiles of a company or project from its website (X/Twitter, LinkedIn, Instagram, Facebook, YouTube, TikTok, GitHub, Telegram, Discord...) plus its contact page. Enrich leads and verify projects.
POST/tipos-fed-pagoNo price listedUS dollar reference rates from the Federal Reserve Bank of New York: effective fed funds rate (EFFR) with the Fed's target range, SOFR with 30/90/180-day averages, OBFR, TGCR and BGCR, with volumes and percentiles.
POST/v1/tokenized-stock-issuanceNo price listedOn-chain activity of tokenized stocks on Solana: current supply per issuer and recent issuance (mint when shares are deposited) and redemptions (burn), with transaction links.
POST/masa-monetaria-bce-pagoNo price listedYear-on-year growth of euro area money supply M1, M2 and M3, month by month. A leading indicator of inflation and liquidity. Official ECB data.
POST/v1/json-diffNo price listedDeep comparison of two JSON documents: added, removed and changed values with their exact path, optionally ignoring list order. Detect changes in API responses, configs or data snapshots.
POST/hyperliquid-velas-pagoNo 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/dex-par-pagoNo price listedTrading pairs for a token across all chains (by symbol, name or address): price, 24h/1h change, on-chain liquidity, 24h volume, market cap, DEX and chain. Filter by chain (use the token address for a precise per-chain view). Live from DEX Screener.
POST/v1/ip-infoNo price listedPublic information about an IP address: network prefix, autonomous system (ASN) and holder, registration country, regional registry and abuse contact, or whether it is private/reserved. RIPEstat data.
POST/prueba-x402-pagoNo price listedTest your x402 client or agent for the minimum price: confirms the payment arrived and echoes back the network, scheme, payer and amount the server saw, your IP, user agent, time and any 'eco' text you send.
POST/v1/cve-infoNo price listedDetails of a vulnerability by id (CVE-2021-44228, GHSA-..., PYSEC-...): summary, description, severity and CVSS vector, affected packages, fixed versions and references. OSV.dev data.
POST/v1/arxiv-searchNo 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/bluesky-followingNo price listedAccounts a Bluesky profile follows, with handle, name, bio and profile link, plus the total following count.
POST/v1/nft-collectionNo price listedOn-chain profile of an NFT collection (ERC-721/1155): name, symbol, total supply, contract owner/admin, royalties (ERC-2981) and standard, read directly from the contract on Base, Ethereum, Arbitrum, Optimism or Polygon.
POST/subred-ip-pagoNo price listedIPv4/IPv6 subnet calculator: network, mask, wildcard, broadcast, first/last host, usable hosts, address type (private, public, loopback...) and whether a given IP belongs to the subnet.
POST/curva-bonos-eurozona-pagoNo price listedEuro area AAA government bond yield curve (zero-coupon, 3 months to 30 years) estimated by the ECB, with change in basis points versus N days ago and the 10y-2y slope.
POST/eth-quemado-pagoNo 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/geo-coordenadas-pagoNo price listedConvert coordinates between decimal degrees, degrees-minutes-seconds (40°25'00"N), UTM (zone, easting, northing) and geohash, in any direction, plus a map link.
POST/gobernanza-dao-pagoNo price listedGovernance proposals of a DAO on Snapshot by its space (aavedao.eth, uniswapgovernance.eth, cow.eth...): title, state, close date, total votes and results per option. For agents that follow or vote on a protocol's decisions. Live from Snapshot.
POST/comunicados-oficiales-pagoNo price listedLatest press releases from central banks and financial regulators (Federal Reserve, ECB, Bank of England, SEC, CFTC, ESMA) in one feed by date, with title, link and summary; filter by source or keyword (rate, crypto, stablecoin...).
POST/cadena-historico-pagoNo price listedTVL history of a blockchain: current value, all-time high and its date, distance from ATH, 30d and 1y change, plus a sampled series. Shows where a chain sits in the cycle. Live from DefiLlama.
POST/v1/chain-top-protocolsNo price listedRanking of the DeFi protocols with the most TVL on a specific chain (Base, Solana, Arbitrum, BSC...), with category, 7-day change and share of the chain's TVL. Optional category filter.
POST/ics-eventos-pagoNo price listedTurn an iCal/ICS calendar URL (Google Calendar, Outlook, holidays, events...) into JSON: upcoming events with title, start and end, all-day flag, location, description and link over the next N days; text filter.
POST/v1/seo-auditNo price listedSEO and sharing metadata of a page: title and description with length, canonical, robots, language, hreflang, Open Graph, Twitter Card, JSON-LD types, favicon, H1/H2, plus warnings (missing tags, noindex, multiple H1).
POST/subvenciones-eeuu-pagoNo price listedUS federal grant opportunities from Grants.gov: title, number, agency, open and close dates, status and link; search by keyword (AI, energy, health...) and agency (NSF, NIH, DOE...), open or forecasted.

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.

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