api.vextorium.com
Onchain data API on Base, Optimism and Polygon, paid per request with x402.
- Endpoints2,395
- Price per requestfrom $0.001
- Outside payers · 7dn/a
- Answer 4020 of 7
Overview
- Seller wallet
- 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf
- Chains
- BaseOptimismPolygon
- Hosts
- api.vextorium.com
- CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
- Onchain data869Market data531Other305Developer tools275Security88Web data83Identity82Media59Commerce58AI models22Search17Agents6
- First seen
- 2026-10-05 · last seen 2026-10-06
Endpoints
EndpointsDescriptions are the seller's own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.https://api.vextorium.com/contratos-eeuu-pago
US federal government contracts by keyword (USAspending): recipient, amount, awarding agency, dates and description, largest first. For public-sector market research and competitor analysis.
PolygonOthern/a/ request
2026-10-05
https://api.vextorium.com/contratos-eeuu-pago
US federal government contracts by keyword (USAspending): recipient, amount, awarding agency, dates and description, largest first. For public-sector market research and competitor analysis.
OptimismOthern/a/ request
2026-10-05
https://api.vextorium.com/convertir-formato-pago
Convert 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.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/convertir-formato-pago
Convert 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.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/convertir-unidades-pago
Convert units of length, mass, volume, area, speed, temperature, data (KB vs KiB), energy, pressure, time and power, metric and imperial, with exact factors.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/convertir-unidades-pago
Convert units of length, mass, volume, area, speed, temperature, data (KB vs KiB), energy, pressure, time and power, metric and imperial, with exact factors.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/correlacion-activos-pago
Correlation matrix of daily returns for 2-8 crypto assets over up to 2 years, with each asset's return and annualized volatility and the least correlated pair. For diversification and hedging. Prices from DefiLlama.
OptimismMarket datan/a/ request
2026-10-05
https://api.vextorium.com/correlacion-activos-pago
Correlation matrix of daily returns for 2-8 crypto assets over up to 2 years, with each asset's return and annualized volatility and the least correlated pair. For diversification and hedging. Prices from DefiLlama.
PolygonMarket datan/a/ request
2026-10-05
https://api.vextorium.com/cosmos-cartera-pago
Wallet 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 sho…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/cosmos-cartera-pago
Wallet 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 sho…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/coste-operacion-pago
What a typical operation costs right now in USD on 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): native transfer, ERC-20 transfer, DEX swap or NFT m…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/coste-operacion-pago
What a typical operation costs right now in USD on 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): native transfer, ERC-20 transfer, DEX swap or NFT m…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/crates-paquete-pago
Rust crate profile from crates.io: version, description, license, repository, docs, total and recent downloads, minimum Rust version, keywords and dates.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/crates-paquete-pago
Rust crate profile from crates.io: version, description, license, repository, docs, total and recent downloads, minimum Rust version, keywords and dates.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/cripto-convertir-pago
Convert an amount between cryptocurrencies and currencies (0.5 BTC to ETH, 100 USDC to EUR, 1000 EUR to SOL) with live DefiLlama prices and ECB rates.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/cripto-convertir-pago
Convert an amount between cryptocurrencies and currencies (0.5 BTC to ETH, 100 USDC to EUR, 1000 EUR to SOL) with live DefiLlama prices and ECB rates.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/cron-explicar-pago
Validate a 5-field cron expression (ranges, steps, names, @daily aliases), explain it in plain English and list its next run times in any time zone, DST-aware.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/cron-explicar-pago
Validate a 5-field cron expression (ranges, steps, names, @daily aliases), explain it in plain English and list its next run times in any time zone, DST-aware.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/curva-bonos-eurozona-pago
Euro 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.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/curva-bonos-eurozona-pago
Euro 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.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/curva-tesoro-eeuu-pago
Latest US Treasury par yield curve (1 month to 30 years), change in basis points versus N days ago, 10y-2y and 10y-3m spreads and inversion flag. Official US Treasury data (public domain).
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/curva-tesoro-eeuu-pago
Latest US Treasury par yield curve (1 month to 30 years), change in basis points versus N days ago, 10y-2y and 10y-3m spreads and inversion flag. Official US Treasury data (public domain).
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/decodificar-firma-pago
Translates a 4-byte function selector (e.g. 0xa9059cbb) or a 32-byte event topic into its human-readable signature (e.g. transfer(address,uint256)). Essential for an agent reading or verifying transactions. Live from 4b…
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/decodificar-firma-pago
Translates a 4-byte function selector (e.g. 0xa9059cbb) or a 32-byte event topic into its human-readable signature (e.g. transfer(address,uint256)). Essential for an agent reading or verifying transactions. Live from 4b…
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/decodificar-vin-pago
Decode a vehicle identification number (17-character VIN): make, model, year, trim, body, engine, fuel and electrification, transmission, drive, plant city and country, and safety equipment. Official NHTSA vPIC data.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/decodificar-vin-pago
Decode a vehicle identification number (17-character VIN): make, model, year, trim, body, engine, fuel and electrification, transmission, drive, plant city and country, and safety equipment. Official NHTSA vPIC data.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/defi-cadenas-pago
All blockchains ranked by DeFi total value locked: TVL in USD, share of the total and native token for each chain (Ethereum, Solana, Base, Arbitrum...). Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-cadenas-pago
All blockchains ranked by DeFi total value locked: TVL in USD, share of the total and native token for each chain (Ethereum, Solana, Base, Arbitrum...). Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-categorias-pago
DeFi TVL grouped by category (Lending, Dexs, Liquid Staking, CDP, Yield...): value locked, share of the total and number of protocols per category. Shows where the money is by product type. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-categorias-pago
DeFi TVL grouped by category (Lending, Dexs, Liquid Staking, CDP, Yield...): value locked, share of the total and number of protocols per category. Shows where the money is by product type. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-comisiones-pago
DeFi protocols ranked by the fees users pay them (24h, 7d, 30d), with category and 7d trend. Optional per chain. High, steady fees = a real business. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-comisiones-pago
DeFi protocols ranked by the fees users pay them (24h, 7d, 30d), with category and 7d trend. Optional per chain. High, steady fees = a real business. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-hackeos-pago
Database of crypto hacks and exploits: date, amount stolen, technique, classification, chains and whether it was a bridge or CEX. Filterable by chain and minimum amount. Essential to gauge the risk of a protocol or chai…
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-hackeos-pago
Database of crypto hacks and exploits: date, amount stolen, technique, classification, chains and whether it was a bridge or CEX. Filterable by chain and minimum amount. Essential to gauge the risk of a protocol or chai…
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-ingresos-pago
DeFi 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.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-ingresos-pago
DeFi 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.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-movimientos-pago
DeFi protocols with the largest TVL rise or fall over 1 hour, 1 day or 7 days, with minimum-TVL and category filters. Spot capital inflows, mass exits or possible incidents early. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-movimientos-pago
DeFi protocols with the largest TVL rise or fall over 1 hour, 1 day or 7 days, with minimum-TVL and category filters. Spot capital inflows, mass exits or possible incidents early. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-pool-pago
Detail of one DeFi pool by its DefiLlama id: current APY (base and rewards), TVL, 7d/30d trend, impermanent-loss risk, exposure, and the APY/TVL evolution over the last 30 days with min and max. Use the id returned by t…
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-pool-pago
Detail of one DeFi pool by its DefiLlama id: current APY (base and rewards), TVL, 7d/30d trend, impermanent-loss risk, exposure, and the APY/TVL evolution over the last 30 days with min and max. Use the id returned by t…
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-prestamos-pago
Where to borrow a token cheapest across DeFi lending markets (Aave, Compound, Morpho, Spark, Euler...): borrow APY, borrow incentives, net cost, supply APY, max LTV, utilization and available liquidity, by chain. Live f…
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-prestamos-pago
Where to borrow a token cheapest across DeFi lending markets (Aave, Compound, Morpho, Spark, Euler...): borrow APY, borrow incentives, net cost, supply APY, max LTV, utilization and available liquidity, by chain. Live f…
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/defi-protocolo-pago
Overview of any DeFi protocol by name (Aave, Uniswap, Lido, Pendle...): total value locked, 1d/7d/1m TVL change, category, chains it runs on, native token and description. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-protocolo-pago
Overview of any DeFi protocol by name (Aave, Uniswap, Lido, Pendle...): total value locked, 1d/7d/1m TVL change, category, chains it runs on, native token and description. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-resumen-pago
DeFi market snapshot: total TVL and top 5 chains, DEX volume, fees generated over 24h, 7d and 30d, and stablecoin market cap, with changes. One call for a daily market brief. DefiLlama data.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/defi-resumen-pago
DeFi market snapshot: total TVL and top 5 chains, DEX volume, fees generated over 24h, 7d and 30d, and stablecoin market cap, with changes. One call for a daily market brief. DefiLlama data.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/deficit-mensual-eeuu-pago
Monthly US federal receipts, outlays and deficit (or surplus), plus the trailing 12-month deficit, from the Monthly Treasury Statement. US Treasury, public domain.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/deficit-mensual-eeuu-pago
Monthly US federal receipts, outlays and deficit (or surplus), plus the trailing 12-month deficit, from the Monthly Treasury Statement. US Treasury, public domain.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/deficit-ue-pago
Annual government deficit (-) or surplus (+) as % of GDP for any European country; without a country, a ranking. Official Eurostat data.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/deficit-ue-pago
Annual government deficit (-) or surplus (+) as % of GDP for any European country; without a country, a ranking. Official Eurostat data.
PolygonMarket datan/a/ request
2026-10-06
Evidence
Answers HTTP 402
Answers HTTP 402Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.0 of 7
0 of 7 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-06
x402-style payments, last 7 days (Base)
x402-style paymentsMethod: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.unknown
unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan)
window ended 2026-10-06
By chain
| Chain | Seller wallet | Endpoints | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 1,011 | 0 of 5 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-06 | unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan) |
| Optimism | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 829 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-28 | unknown. not measured on this chain yet |
| Polygon | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 555 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-28 | unknown. not measured on this chain yet |
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.
Pricing
The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.
Claim this merchant
Sign a message from the payout address 0xb9f06d…b71acf to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Data CC-BY-4.0, attribution: data by satohub.ai. Data: x402-list.com (CC BY 4.0). Data as of 2026-10-06. Appearing here is not an endorsement. Check an endpoint with the doctor.