api.vextorium.com
Onchain data API on Base, Optimism and Polygon, paid per request with x402.
- Endpoints3,010
- Price per requestfrom $0.001
- Outside payers · 7dn/a
- Answer 4020 of 19
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 data1,038Market data603Other409Developer tools407Web data117Security112Identity111Media78Commerce66AI models36Search27Agents6
- First seen
- 2026-10-05 · last seen 2026-10-07
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/v1/country-indicators
Key indicators of any country: GDP, real growth, GDP per capita, inflation, population, unemployment, public debt, exports, life expectancy and internet use, with the last years of each. World Bank open data.
PolygonMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/country-indicators
Key indicators of any country: GDP, real growth, GDP per capita, inflation, population, unemployment, public debt, exports, life expectancy and internet use, with the last years of each. World Bank open data.
OptimismMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/country-info
Country profile: name, ISO codes, capital and its coordinates, region, income level, phone prefix, time zones and latest population and GDP per capita. World Bank and libphonenumber data.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/country-info
Country profile: name, ISO codes, capital and its coordinates, region, income level, phone prefix, time zones and latest population and GDP per capita. World Bank and libphonenumber data.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/country-rankings
World ranking of countries by a World Bank indicator (GDP, GDP per capita, growth, inflation, population, unemployment, public debt, life expectancy, CO2 per capita, renewables, FDI...), latest value of each country fro…
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/country-rankings
World ranking of countries by a World Bank indicator (GDP, GDP per capita, growth, inflation, population, unemployment, public debt, life expectancy, CO2 per capita, renewables, FDI...), latest value of each country fro…
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crate-package
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/v1/crate-package
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/v1/cron-explain
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/v1/cron-explain
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/v1/crypto-address-validate
Detect and validate a crypto address before sending funds: EVM (EIP-55 checksum), Solana, Bitcoin (legacy, P2SH, SegWit, Taproot), Litecoin, Dogecoin, Tron and Cosmos bech32, with its type and network. Computed locally.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-address-validate
Detect and validate a crypto address before sending funds: EVM (EIP-55 checksum), Solana, Bitcoin (legacy, P2SH, SegWit, Taproot), Litecoin, Dogecoin, Tron and Cosmos bech32, with its type and network. Computed locally.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-convert
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/v1/crypto-convert
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/v1/crypto-correlation
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/v1/crypto-correlation
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/v1/crypto-news
Latest 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 wind…
OptimismWeb datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-news
Latest 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 wind…
PolygonWeb datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-price
Current price of a list of cryptocurrencies by ticker (BTC, ETH, SOL...) or chain:contract, in USD or any ECB currency (EUR, GBP, JPY...). The simplest way to get prices.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-price
Current price of a list of cryptocurrencies by ticker (BTC, ETH, SOL...) or chain:contract, in USD or any ECB currency (EUR, GBP, JPY...). The simplest way to get prices.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-price-fiat
Crypto price in any ECB currency (EUR, GBP, JPY, CHF...): on-chain USD price (Chainlink or Uniswap v3) converted with ECB reference rates.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-price-fiat
Crypto price in any ECB currency (EUR, GBP, JPY, CHF...): on-chain USD price (Chainlink or Uniswap v3) converted with ECB reference rates.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/crypto-price-onchain
Crypto price in USD and EUR from on-chain sources only: Chainlink oracles (BTC, ETH, USDC) or Uniswap v3 quotes on Base (USDT, DAI or any Base token address); EUR via ECB rate.
PolygonMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/crypto-price-onchain
Crypto price in USD and EUR from on-chain sources only: Chainlink oracles (BTC, ETH, USDC) or Uniswap v3 quotes on Base (USDT, DAI or any Base token address); EUR via ECB rate.
OptimismMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/csv-clean
CSV cleaning and normalization to JSON: column names, types, duplicates and empty values. Data is processed in memory and not stored.
OptimismDeveloper toolsn/a/ request
2026-10-03
https://api.vextorium.com/v1/csv-sql
Run a read-only SQL query (SELECT/WITH, WHERE, GROUP BY, ORDER BY, window functions...) over a CSV loaded as table «datos» in a temporary in-memory SQLite database, and get the rows as JSON.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/csv-sql
Run a read-only SQL query (SELECT/WITH, WHERE, GROUP BY, ORDER BY, window functions...) over a CSV loaded as table «datos» in a temporary in-memory SQLite database, and get the rows as JSON.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/csv-stats
Profile a CSV (delimiter auto-detected): rows, columns, type of each column, nulls, unique values, min, max, mean, median, std, sum, top values, duplicate rows and a sample. Understand a dataset before using it.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/csv-stats
Profile a CSV (delimiter auto-detected): rows, columns, type of each column, nulls, unique values, min, max, mean, median, std, sum, top values, duplicate rows and a sample. Understand a dataset before using it.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/cve-info
Details 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.
PolygonSecurityn/a/ request
2026-10-06
https://api.vextorium.com/v1/cve-info
Details 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.
OptimismSecurityn/a/ request
2026-10-06
https://api.vextorium.com/v1/dao-governance
Governance 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 decis…
PolygonOthern/a/ request
2026-10-05
https://api.vextorium.com/v1/dao-governance
Governance 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 decis…
OptimismOthern/a/ request
2026-10-05
https://api.vextorium.com/v1/date-calculator
Date facts (weekday, ISO week, quarter, day of year, leap year), exact difference between two dates in years, months, days, weeks and Mon-Fri working days, and adding or subtracting days, months or years (end-of-month s…
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/date-calculator
Date facts (weekday, ISO week, quarter, day of year, leap year), exact difference between two dates in years, months, days, weeks and Mon-Fri working days, and adding or subtracting days, months or years (end-of-month s…
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/dca-backtest
Backtest buying a fixed amount of a token every N days (dollar-cost averaging) since a past date: invested, units, average cost, current value, return, and comparison with investing everything at the start. Prices from …
PolygonMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/dca-backtest
Backtest buying a fixed amount of a token every N days (dollar-cost averaging) since a past date: invested, units, average cost, current value, return, and comparison with investing everything at the start. Prices from …
OptimismMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/debt-service-ratios
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.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/debt-service-ratios
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.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/decode-selector
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…
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/decode-selector
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…
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/defi-borrow-rates
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/v1/defi-borrow-rates
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/v1/defi-categories
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/v1/defi-categories
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/v1/defi-chains
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/v1/defi-chains
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/v1/defi-fees
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/v1/defi-fees
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/v1/defi-hacks
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
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 19
0 of 19 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-07
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 2026-10-07
By chain
| Chain | Seller wallet | Endpoints | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 1,014 | 0 of 7 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-07 | unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan) |
| Optimism | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 1,007 | 0 of 6 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-07 | unknown. not measured on this chain yet |
| Polygon | 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf | 989 | 0 of 6 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-07 | 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 2026-10-07. Appearing here is not an endorsement. Check an endpoint with the doctor.