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/build-transaction
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/business-days
Business days in 150+ countries and their regions: count between two dates, or the date after adding N business days, skipping weekends and official holidays, listing the holidays in the range.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/business-days
Business days in 150+ countries and their regions: count between two dates, or the date after adding N business days, skipping weekends and official holidays, listing the holidays in the range.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/cardano-wallet
Cardano wallet by address (addr1...) or stake account (stake1...): ADA balance, delegated pool and DRep, available rewards, native tokens and USD value.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/cardano-wallet
Cardano wallet by address (addr1...) or stake account (stake1...): ADA balance, delegated pool and DRep, available rewards, native tokens and USD value.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/central-bank-press
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/central-bank-press
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/central-bank-rates
Policy interest rate of about 40 central banks (Fed, ECB, BoE, BoJ, Banxico, BCB...): latest rate and date as a ranking, or one country's monthly history with every hike and cut. Bank for International Settlements data.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/central-bank-rates
Policy interest rate of about 40 central banks (Fed, ECB, BoE, BoJ, Banxico, BCB...): latest rate and date as a ranking, or one country's monthly history with every hike and cut. Bank for International Settlements data.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-compare
Compare two blockchains by DeFi TVL: value locked, share of the whole market and gas token, plus which one is bigger. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/chain-compare
Compare two blockchains by DeFi TVL: value locked, share of the whole market and gas token, plus which one is bigger. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/chain-info
Reference data for a blockchain by its chainId: name, gas/native token, block explorers, number of public RPCs and website. Utility for multi-chain agents. Live from chainid.network (ethereum-lists, open data).
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-info
Reference data for a blockchain by its chainId: name, gas/native token, block explorers, number of public RPCs and website. Utility for multi-chain agents. Live from chainid.network (ethereum-lists, open data).
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-stats
Statistics of an EVM chain: total and today's transactions, addresses, blocks, average block time, gas prices (slow, average, fast), network utilization, native token price and market cap.
OptimismOnchain datan/a/ request
2026-10-03
https://api.vextorium.com/v1/chain-top-protocols
Ranking 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.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-top-protocols
Ranking 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.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-tvl-history
TVL 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.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chain-tvl-history
TVL 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.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chainlink-price
Tamper-resistant price from Chainlink Data Feeds on Base (ETH/USD, BTC/USD, USDC/USD, or any Chainlink aggregator address), with update time and staleness in seconds.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/chainlink-price
Tamper-resistant price from Chainlink Data Feeds on Base (ETH/USD, BTC/USD, USDC/USD, or any Chainlink aggregator address), with update time and staleness in seconds.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/clinical-trials
Clinical trials on ClinicalTrials.gov by disease, drug or sponsor: title, NCT id, status, phase, conditions, interventions, sponsor, dates, enrollment and countries; recruiting ones by default.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/clinical-trials
Clinical trials on ClinicalTrials.gov by disease, drug or sponsor: title, NCT id, status, phase, conditions, interventions, sponsor, dates, enrollment and countries; recruiting ones by default.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/color-contrast
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 toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/color-contrast
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 toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/commodities
Monthly prices of about 70 commodities (Brent and WTI oil, natural gas, coal, gold, silver, copper, aluminium, wheat, maize, coffee, cocoa, sugar, fertilizers...) for the latest published month, with monthly and annual …
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/commodities
Monthly prices of about 70 commodities (Brent and WTI oil, natural gas, coal, gold, silver, copper, aluminium, wheat, maize, coffee, cocoa, sugar, fertilizers...) for the latest published month, with monthly and annual …
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/commodity-history
Monthly price series of a commodity (gold, Brent, copper, wheat, coffee...) going back up to 60 years, with high, low and change over the period. World Bank Pink Sheet.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/commodity-history
Monthly price series of a commodity (gold, Brent, copper, wheat, coffee...) going back up to 60 years, with high, low and change over the period. World Bank Pink Sheet.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/company-enrich
Company profile from its domain, without personal data: website title and description, social profiles, technologies used, email provider, domain age and registrar, SSL certificate and hosting country. Qualify B2B leads…
PolygonIdentityn/a/ request
2026-10-05
https://api.vextorium.com/v1/company-enrich
Company profile from its domain, without personal data: website title and description, social profiles, technologies used, email provider, domain age and registrar, SSL certificate and hosting country. Qualify B2B leads…
OptimismIdentityn/a/ request
2026-10-05
https://api.vextorium.com/v1/company-filings
Latest regulatory filings of a US listed company (8-K material events, 10-Q, 10-K, insider Form 4, 13D/G...) with date, 8-K items and direct document link. Optional filter by form type.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/company-filings
Latest regulatory filings of a US listed company (8-K material events, 10-Q, 10-K, insider Form 4, 13D/G...) with date, 8-K items and direct document link. Optional filter by form type.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/company-fundamentals
US listed company fundamentals from public SEC filings (XBRL): last quarters and years of revenue, net income, diluted EPS, operating cash flow, assets, liabilities, equity, cash, dividends and shares outstanding.
OptimismMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/company-fundamentals
US listed company fundamentals from public SEC filings (XBRL): last quarters and years of revenue, net income, diluted EPS, operating cash flow, assets, liabilities, equity, cash, dividends and shares outstanding.
PolygonMarket datan/a/ request
2026-10-05
https://api.vextorium.com/v1/contract-abi
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-abi
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-address-predict
Compute a contract address in advance: CREATE (deployer + nonce) or CREATE2 (deployer + salt + init code hash). For deterministic deployments and verifying announced addresses.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-address-predict
Compute a contract address in advance: CREATE (deployer + nonce) or CREATE2 (deployer + salt + init code hash). For deterministic deployments and verifying announced addresses.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-creator
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-creator
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-events
Latest events emitted by an EVM contract from the event signature (e.g. Transfer(address indexed from,address indexed to,uint256 value)), decoded with parameter names, block and transaction hash, over the last N blocks.
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/contract-events
Latest events emitted by an EVM contract from the event signature (e.g. Transfer(address indexed from,address indexed to,uint256 value)), decoded with parameter names, block and transaction hash, over the last N blocks.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/contract-read
Call any read-only (view) function of an EVM contract from its signature, e.g. balanceOf(address)(uint256), with arguments, and get the decoded result. Supports address, bool, intN/uintN, bytesN, string, bytes and array…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-read
Call any read-only (view) function of an EVM contract from its signature, e.g. balanceOf(address)(uint256), with arguments, and get the decoded result. Supports address, bool, intN/uintN, bytesN, string, bytes and array…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-verified
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/contract-verified
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 datan/a/ request
2026-10-06
https://api.vextorium.com/v1/coordinate-convert
Convert coordinates between decimal degrees, degrees-minutes-seconds (40°25'00"N), UTM (zone, easting, northing) and geohash, in any direction, plus a map link.
PolygonMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/coordinate-convert
Convert coordinates between decimal degrees, degrees-minutes-seconds (40°25'00"N), UTM (zone, easting, northing) and geohash, in any direction, plus a map link.
OptimismMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/cosmos-wallet
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/v1/cosmos-wallet
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
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.