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/dias-habiles-pagoNo price listedSpanish business-day calculator: count business days between dates or add N business days, using Spain's national public holidays.
POST/pendle-mercados-pagoNo price listedPendle markets (fixed yield in DeFi): asset, maturity, days left, implied fixed APY (buying PT), LP APY and liquidity, on Ethereum, Arbitrum, Base, BNB and other chains.
POST/v1/sui-tokenNo price listedSui token profile by coin type (or SUI / USDC): name, symbol, decimals, total supply, USD price and market cap.
POST/v1/jsonpathNo price listedQuery a JSON document with JSONPath, including filters and functions ($.items[?(@.price > 10)].name, $..id...): matching values and their paths. Send the JSON in the data field or a URL to fetch it.
POST/contratos-eeuu-pagoNo price listedUS federal government contracts by keyword (USAspending): recipient, amount, awarding agency, dates and description, largest first. For public-sector market research and competitor analysis.
POST/crates-paquete-pagoNo price listedRust crate profile from crates.io: version, description, license, repository, docs, total and recent downloads, minimum Rust version, keywords and dates.
POST/xrp-cuenta-pagoNo price listedXRP Ledger account: XRP balance and locked reserve, trust lines with other assets (RLUSD, USDC...), sequence, domain and USD value.
POST/v1/spain-business-daysNo price listedSpanish business-day calculator: count business days between dates or add N business days, using Spain's national public holidays.
POST/v1/image-metadataNo price listedMetadata of an image (URL or base64): format, dimensions, color mode, transparency, size, DPI, animation and EXIF (camera, date, software), flagging embedded GPS location.
POST/v1/defi-liquidationsNo price listedDeFi liquidations read on-chain from Aave v3 on Base, Ethereum, Arbitrum, Optimism and Polygon: total USD liquidated, event count, breakdown by network, collateral and debt asset, and latest events with explorer links. Window 1-24h, optional asset filter.
POST/v1/us-federal-contractsNo price listedUS federal government contracts by keyword (USAspending): recipient, amount, awarding agency, dates and description, largest first. For public-sector market research and competitor analysis.
POST/v1/huggingface-trendingNo price listedAI models on Hugging Face: trending, most downloaded or most liked, filtered by name and task (text-generation, image-text-to-text, automatic-speech-recognition...): author, downloads, likes, task, license and creation date.
POST/v1/cosmos-walletNo price listedWallet on Cosmos Hub (cosmos1...), Osmosis (osmo1...) or Celestia (celestia1...): token balances, staked amount per validator, pending rewards, unbonding and USD value. Also accepts a validator (valoper) address and shows its account.
POST/v1/x402-facilitatorsNo 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/alquileres-ue-pagoNo price listedYear-on-year change in actual rents for housing (HICP component) for any European country, the EU or the euro area; without a country, a ranking. Official Eurostat data.
POST/v1/spain-boe-summaryNo price listedSpanish Official State Gazette (BOE) daily summary: every item of a given day with section, department and official links, filterable by section (e.g. civil service exams 'oposiciones', appointments, public procurement), department or title keywords.
POST/tx-decodificada-pagoNo price listedAn EVM transaction explained: method called and its decoded parameters with names (when the contract is verified), token transfers it triggered, value, fee, status, revert reason and names of the addresses involved.
POST/v1/llm-token-countNo price listedCount the tokens of a text with OpenAI tokenizers (o200k for GPT-4o/4.1/5, cl100k for GPT-4/3.5) plus estimates for Claude, Llama and Gemini, with characters per token. Budget LLM calls and split contexts.
POST/v1/erc20-token-infoNo price listedERC-20 token profile read directly from the contract on Base or Ethereum: name, symbol, decimals, total supply, bytecode size and whether it is an upgradeable EIP-1967 proxy (with implementation address).
POST/saldo-12-redes-pagoNo price listedBalance of one EVM wallet on all 12 chains at once (Base, Ethereum, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): native coin, USDC and USDT on each, which chains hold funds and total stablecoins.
POST/comprobar-salud-pagoNo price listedAPI/URL health check: up or down, HTTP status, latency, and whether the endpoint is a valid x402 paid endpoint.
POST/sec-insiders-recientes-pagoNo price listedLatest SEC Form 4 insider filings across the whole US market: issuer company, who filed (directors, officers, 10% owners), date and link. Filter by company or person. For one company's trade details use insiders-empresa.
POST/hyperliquid-ranking-pagoNo price listedHyperliquid trader leaderboard by PnL, ROI or volume over the day, week, month or all time, with account value (accounts without trading volume, like vaults, are excluded). Find top traders and whales to follow; see a wallet's positions with hyperliquid-posiciones.
POST/starknet-cartera-pagoNo price listedStarknet wallet: ETH, STRK, USDC and USDT balances read from their contracts, account nonce, deployment status and USD value.
POST/noticias-cripto-pagoNo price listedLatest crypto news headlines from CoinDesk, Cointelegraph, Decrypt, Bitcoin Magazine and The Block, newest first, with link to the original article; filter by keyword (bitcoin, ETF, Solana, SEC...), outlet and time window.

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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