api.vextorium.com

• https://api.vextorium.com/calcular-iva-pago

  Standard and reduced VAT rates of any EU member state, and an invoice breakdown (net, VAT, gross) from a net or VAT-inclusive amount, flagging rates that are not in force there.

  OptimismCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/calcular-iva-pago

  Standard and reduced VAT rates of any EU member state, and an invoice breakdown (net, VAT, gross) from a net or VAT-inclusive amount, flagging rates that are not in force there.

  PolygonCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/calendario-economico-pago

  Upcoming 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 on…

  OptimismMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/calendario-economico-pago

  Upcoming 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 on…

  PolygonMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cambio-precio-tokens-pago

  Price change in % of up to 20 tokens over 1h, 24h, 7d, 30d, 90d or 1y, sorted from best to worst, with current price. Symbols or chain:contract ids. DefiLlama data.

  OptimismMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cambio-precio-tokens-pago

  Price change in % of up to 20 tokens over 1h, 24h, 7d, 30d, 90d or 1y, sorted from best to worst, with current price. Symbols or chain:contract ids. DefiLlama data.

  PolygonMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/carburantes-provincias-pago

  Average, minimum and maximum price of a fuel in every Spanish province right now, from cheapest to most expensive, with the national average. Official Ministry data updated every 30 minutes.

  PolygonOther

  n/a/ request

  2026-10-06

• https://api.vextorium.com/carburantes-provincias-pago

  Average, minimum and maximum price of a fuel in every Spanish province right now, from cheapest to most expensive, with the national average. Official Ministry data updated every 30 minutes.

  OptimismOther

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cardano-cartera-pago

  Cardano wallet by address (addr1...) or stake account (stake1...): ADA balance, delegated pool and DRep, available rewards, native tokens and USD value.

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cardano-cartera-pago

  Cardano wallet by address (addr1...) or stake account (stake1...): ADA balance, delegated pool and DRep, available rewards, native tokens and USD value.

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/carga-deuda-mundo-pago

  Debt service ratio (interest plus principal over income) of households, non-financial companies or the whole private sector in about 30 economies, latest quarter, ranked. A financial-stability risk gauge from the BIS.

  OptimismOther

  n/a/ request

  2026-10-06

• https://api.vextorium.com/carga-deuda-mundo-pago

  Debt service ratio (interest plus principal over income) of households, non-financial companies or the whole private sector in about 30 economies, latest quarter, ranked. A financial-stability risk gauge from the BIS.

  PolygonOther

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catalogo-tokenizadas-pago

  Catalog of 113 verified tokenized stocks (xStocks/Backed and Ondo Global Markets). With a ticker: all its tokenized versions (issuer, symbol, chain, mint). Without it: the full list, filterable by issuer, with totals an…

  OptimismMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catalogo-tokenizadas-pago

  Catalog of 113 verified tokenized stocks (xStocks/Backed and Ondo Global Markets). With a ticker: all its tokenized versions (issuer, symbol, chain, mint). Without it: the full list, filterable by issuer, with totals an…

  PolygonMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catastro-coordenadas-pago

  Cadastral parcel reference and address at given coordinates in Spain, to then query its data with catastro-inmueble. Official Catastro data.

  OptimismCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catastro-coordenadas-pago

  Cadastral parcel reference and address at given coordinates in Spain, to then query its data with catastro-inmueble. Official Catastro data.

  PolygonCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catastro-inmueble-pago

  Public data of a Spanish property from the Catastro by cadastral reference: address, use, built area, year built, ownership share coefficient, plot type and area, building units and map link. No owner data (protected).

  PolygonCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/catastro-inmueble-pago

  Public data of a Spanish property from the Catastro by cadastral reference: address, use, built area, year built, ownership share coefficient, plot type and area, building units and map link. No owner data (protected).

  OptimismCommerce

  n/a/ request

  2026-10-06

• https://api.vextorium.com/certificado-ssl-pago

  TLS 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.

  OptimismIdentity

  n/a/ request

  2026-10-06

• https://api.vextorium.com/certificado-ssl-pago

  TLS 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.

  PolygonIdentity

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cex-reservas-pago

  On-chain reserves of centralized exchanges (Binance, OKX, Bybit, Coinbase...) from their published wallets: total and ex-own-token assets, net inflows/outflows over 24h, 7d and 30d, spot and derivatives volume and open …

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/cex-reservas-pago

  On-chain reserves of centralized exchanges (Binance, OKX, Bybit, Coinbase...) from their published wallets: total and ex-own-token assets, net inflows/outflows over 24h, 7d and 30d, spot and derivatives volume and open …

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/color-contraste-pago

  Convert a color between HEX, RGB, HSL, HSV and CMYK and, given a background, compute the WCAG 2.x contrast ratio with AA/AAA pass flags; without background, suggests black or white text.

  OptimismDeveloper tools

  n/a/ request

  2026-10-06

• https://api.vextorium.com/color-contraste-pago

  Convert a color between HEX, RGB, HSL, HSV and CMYK and, given a background, compute the WCAG 2.x contrast ratio with AA/AAA pass flags; without background, suggests black or white text.

  PolygonDeveloper tools

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-json-pago

  Deep 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.

  OptimismDeveloper tools

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-json-pago

  Deep 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.

  PolygonDeveloper tools

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-listas-pago

  Compare two lists (emails, IDs, wallets, SKUs...): items in both, only in A, only in B, duplicates within each and union, with counts. Up to 100,000 items per list.

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-listas-pago

  Compare two lists (emails, IDs, wallets, SKUs...): items in both, only in A, only in B, duplicates within each and union, with counts. Up to 100,000 items per list.

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-versiones-pago

  Sort Semantic Versioning 2.0 versions (pre-releases included), give highest and lowest, the bump type between two, and which satisfy an npm-style range (^1.2.0, ~1.2, >=1.0 <2.0, 1.x || 2.x) plus the best match.

  OptimismSearch

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comparar-versiones-pago

  Sort Semantic Versioning 2.0 versions (pre-releases included), give highest and lowest, the bump type between two, and which satisfy an npm-style range (^1.2.0, ~1.2, >=1.0 <2.0, 1.x || 2.x) plus the best match.

  PolygonSearch

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comprobacion-pre-operacion-pago

  Before buying or selling a token: risk verdict (contract powers, honeypot pattern, age), main pool liquidity, estimated price impact for your USD amount, recommended slippage and a decision (ok, caution, avoid). Base, E…

  OptimismSecurity

  n/a/ request

  2026-10-05

• https://api.vextorium.com/comprobacion-pre-operacion-pago

  Before buying or selling a token: risk verdict (contract powers, honeypot pattern, age), main pool liquidity, estimated price impact for your USD amount, recommended slippage and a decision (ok, caution, avoid). Base, E…

  PolygonSecurity

  n/a/ request

  2026-10-05

• https://api.vextorium.com/comprobar-enlaces-pago

  Check whether a list of URLs, or every link on a page, works: HTTP status, final URL after redirects and broken links first. Up to 50 URLs per call, checked in parallel.

  OptimismDeveloper tools

  n/a/ request

  2026-10-05

• https://api.vextorium.com/comprobar-enlaces-pago

  Check whether a list of URLs, or every link on a page, works: HTTP status, final URL after redirects and broken links first. Up to 50 URLs per call, checked in parallel.

  PolygonDeveloper tools

  n/a/ request

  2026-10-05

• https://api.vextorium.com/comunicados-oficiales-pago

  Latest 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, st…

  OptimismMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/comunicados-oficiales-pago

  Latest 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, st…

  PolygonMarket data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/confianza-consumidor-ue-pago

  Consumer confidence indicator (balance, seasonally adjusted) for any European country, the EU or the euro area; without a country, a ranking. Below 0 = more pessimists than optimists. European Commission surveys via Eur…

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/confianza-consumidor-ue-pago

  Consumer confidence indicator (balance, seasonally adjusted) for any European country, the EU or the euro area; without a country, a ranking. Below 0 = more pessimists than optimists. European Commission surveys via Eur…

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/construir-transaccion-pago

  Build an EVM transaction ready to sign (never signed or sent): native transfer, ERC-20 transfer or ERC-20 approve, with to, data, value, nonce, chainId, estimated gas and current EIP-1559 fees, plus a simulation that wa…

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/construir-transaccion-pago

  Build an EVM transaction ready to sign (never signed or sent): native transfer, ERC-20 transfer or ERC-20 approve, with to, data, value, nonce, chainId, estimated gas and current EIP-1559 fees, plus a simulation that wa…

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contar-tokens-pago

  Count 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.

  OptimismAI models

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contar-tokens-pago

  Count 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.

  PolygonAI models

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-abi-pago

  ABI of a verified EVM contract (Sourcify): every function with signature, selector, inputs, outputs and read/write flag, plus events with topic0 and proxy implementations. Ready-to-use signatures for leer-contrato.

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-abi-pago

  ABI of a verified EVM contract (Sourcify): every function with signature, selector, inputs, outputs and read/write flag, plus events with topic0 and proxy implementations. Ready-to-use signatures for leer-contrato.

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-creador-pago

  Who deployed an EVM contract and when: creator address (named when known), creation transaction and date, contract name, verification, proxy type and implementation, and scam flag.

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-creador-pago

  Who deployed an EVM contract and when: creator address (named when known), creation transaction and date, contract name, verification, proxy type and implementation, and scam flag.

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-info-pago

  Address inspector for EVM chains: wallet (EOA), EIP-7702 delegated wallet or contract; bytecode size, ERC-20/721/1155 support, proxy implementation and beacon, nonce and native balance.

  OptimismOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-info-pago

  Address inspector for EVM chains: wallet (EOA), EIP-7702 delegated wallet or contract; bytecode size, ERC-20/721/1155 support, proxy implementation and beacon, nonce and native balance.

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-verificado-pago

  Checks whether a smart contract's source code is verified and public on Sourcify, on any EVM chain: match type, contract name, compiler, number of functions and a sample. Verified code = transparent and auditable (not a…

  PolygonOnchain data

  n/a/ request

  2026-10-06

• https://api.vextorium.com/contrato-verificado-pago

  Checks whether a smart contract's source code is verified and public on Sourcify, on any EVM chain: match type, contract name, compiler, number of functions and a sample. Verified code = transparent and auditable (not a…

  OptimismOnchain data

  n/a/ request

  2026-10-06

By chain

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.