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/airdrop-candidates
DeFi protocols with significant TVL and no token yet (potential future airdrops): category, suggested activity and difficulty, chains, TVL and links. Signals only, not confirmed airdrops. DefiLlama data.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/airport-distance
Great-circle distance between two airports by IATA or ICAO code in km, miles and nautical miles, bearing, approximate flight time and estimated economy-class CO2 per passenger.
PolygonCommercen/a/ request
2026-10-06
https://api.vextorium.com/v1/airport-distance
Great-circle distance between two airports by IATA or ICAO code in km, miles and nautical miles, bearing, approximate flight time and estimated economy-class CO2 per passenger.
OptimismCommercen/a/ request
2026-10-06
https://api.vextorium.com/v1/airport-lookup
Find airports by IATA/ICAO code, name or city, or the nearest to coordinates: name, codes, city, country, coordinates, elevation and scheduled service. OurAirports open data.
OptimismCommercen/a/ request
2026-10-06
https://api.vextorium.com/v1/airport-lookup
Find airports by IATA/ICAO code, name or city, or the nearest to coordinates: name, codes, city, country, coordinates, elevation and scheduled service. OurAirports open data.
PolygonCommercen/a/ request
2026-10-06
https://api.vextorium.com/v1/algorand-account
Algorand account: ALGO balance and locked minimum, ASA assets (USDC...) with amounts, consensus participation, opted-in apps and USD value.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/algorand-account
Algorand account: ALGO balance and locked minimum, ASA assets (USDC...) with amounts, consensus participation, opted-in apps and USD value.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/apr-apy
Convert APR to APY or APY to APR for any compounding frequency (continuous, daily, hourly, per block...) and optionally project the final value and gain of a deposit over N days. Useful to compare DeFi yields.
OptimismMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/apr-apy
Convert APR to APY or APY to APR for any compounding frequency (continuous, daily, hourly, per block...) and optionally project the final value and gain of a deposit over N days. Useful to compare DeFi yields.
PolygonMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/aptos-wallet
Aptos wallet: APT balance and other fungible assets (USDC, USDT...) with amount and USD value, number of sent transactions and whether the account exists.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/aptos-wallet
Aptos wallet: APT balance and other fungible assets (USDC, USDT...) with amount and USD value, number of sent transactions and whether the account exists.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/arxiv-search
Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...).
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/arxiv-search
Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...).
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/asn-info
Information about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 and IPv6 prefixes announced, approximate IPv4 addresses and a sample of prefixes. RIPEstat data.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/asn-info
Information about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 and IPv6 prefixes announced, approximate IPv4 addresses and a sample of prefixes. RIPEstat data.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/atmospheric-co2
Atmospheric CO2 concentration measured at Mauna Loa (NOAA): latest monthly ppm, yearly change, comparison with 10 years ago and with 1958, and the recent series.
PolygonOthern/a/ request
2026-10-07
https://api.vextorium.com/v1/atmospheric-co2
Atmospheric CO2 concentration measured at Mauna Loa (NOAA): latest monthly ppm, yearly change, comparison with 10 years ago and with 1958, and the recent series.
OptimismOthern/a/ request
2026-10-07
https://api.vextorium.com/v1/barcode-generate
Generate a barcode as SVG (EAN-13, EAN-8, UPC-A, ISBN, ISSN, Code 128, Code 39, ITF, GS1-128...) for labels and products, computing the check digit when missing.
PolygonMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/barcode-generate
Generate a barcode as SVG (EAN-13, EAN-8, UPC-A, ISBN, ISSN, Code 128, Code 39, ITF, GS1-128...) for labels and products, computing the check digit when missing.
OptimismMedian/a/ request
2026-10-06
https://api.vextorium.com/v1/barcode-validate
Validate EAN-8, EAN-13, UPC-A, GTIN-14, ISBN-10 and ISBN-13: check digit (and the expected one if wrong), code type, GS1 prefix and registering country, plus ISBN-10/13 conversion.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/barcode-validate
Validate EAN-8, EAN-13, UPC-A, GTIN-14, ISBN-10 and ISBN-13: check digit (and the expected one if wrong), code type, GS1 prefix and registering country, plus ISBN-10/13 conversion.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/basename-resolve
Resolve a Basename (name.base.eth on Base) to its address, or an address to its verified primary Basename (reverse record checked forward).
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/basename-resolve
Resolve a Basename (name.base.eth on Base) to its address, or an address to its verified primary Basename (reverse record checked forward).
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/beefy-best-vaults
Best-yielding active Beefy Finance vaults for a token (USDC, WETH, cbBTC...), on one chain or all, with a minimum TVL for solidity: APY (auto-compounded, net of Beefy fee), TVL, platform, assets, risk flags and a direct…
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/beefy-best-vaults
Best-yielding active Beefy Finance vaults for a token (USDC, WETH, cbBTC...), on one chain or all, with a minimum TVL for solidity: APY (auto-compounded, net of Beefy fee), TVL, platform, assets, risk flags and a direct…
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/beefy-positions
All Beefy Finance vault positions of a wallet on Base, Ethereum, Arbitrum, Optimism or Polygon, read on-chain (shares and price per share) and valued in USD, including retired vaults where funds are often forgotten.
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/beefy-positions
All Beefy Finance vault positions of a wallet on Base, Ethereum, Arbitrum, Optimism or Polygon, read on-chain (shares and price per share) and valued in USD, including retired vaults where funds are often forgotten.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/beefy-vault
Full detail of a Beefy Finance vault by id or vault contract address: APY breakdown, TVL, performance/deposit/withdraw fees, risk flags, deposited token and price, vault and strategy contracts, last harvest, plus an on-…
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/beefy-vault
Full detail of a Beefy Finance vault by id or vault contract address: APY breakdown, TVL, performance/deposit/withdraw fees, risk flags, deposited token and price, vault and strategy contracts, last harvest, plus an on-…
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/bic-validate
BIC/SWIFT code validation and parsing: bank, country, location and branch codes, test-code flag.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/bic-validate
BIC/SWIFT code validation and parsing: bank, country, location and branch codes, test-code flag.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-address
Balance of any Bitcoin address (legacy, P2SH, SegWit or Taproot) in BTC, sats and USD, pending mempool amount, total received and sent, transaction count and the latest transactions with net effect and confirmations.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-address
Balance of any Bitcoin address (legacy, P2SH, SegWit or Taproot) in BTC, sats and USD, pending mempool amount, total received and sent, transaction count and the latest transactions with net effect and confirmations.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-mining-pools
Bitcoin mining over the last N blocks (max 144, ~1 day): blocks per pool (Foundry, AntPool, ViaBTC, F2Pool...) with share and estimated hashrate, average block reward (subsidy + fees), fees as % of reward and average bl…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-mining-pools
Bitcoin mining over the last N blocks (max 144, ~1 day): blocks per pool (Foundry, AntPool, ViaBTC, F2Pool...) with share and estimated hashrate, average block reward (subsidy + fees), fees as % of reward and average bl…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-mining-profitability
Bitcoin mining profitability now: hashprice (USD per TH/s per day) from the real subsidy and recent fees, and for your machine (hashrate, J/TH efficiency and power price) daily revenue, electricity cost, profit and brea…
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-mining-profitability
Bitcoin mining profitability now: hashprice (USD per TH/s per day) from the real subsidy and recent fees, and for your machine (hashrate, J/TH efficiency and power price) daily revenue, electricity cost, profit and brea…
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-network
Bitcoin network now: block height and latest blocks, recommended fees in sat/vB to confirm in 1, 3, 6, 24 or 144 blocks, mempool size, difficulty, estimated hashrate and next difficulty adjustment (date and expected cha…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-network
Bitcoin network now: block height and latest blocks, recommended fees in sat/vB to confirm in 1, 3, 6, 24 or 144 blocks, mempool size, difficulty, estimated hashrate and next difficulty adjustment (date and expected cha…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-tx
Status of a Bitcoin transaction by txid: confirmed or in mempool, confirmations, block, total fee and fee rate (sat/vB), size, RBF flag, inputs and outputs with amounts.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/bitcoin-tx
Status of a Bitcoin transaction by txid: confirmed or in mempool, confirmations, block, total fee and fee rate (sat/vB), size, RBF flag, inputs and outputs with amounts.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/block-by-date
Block number closest to a date and time on EVM chains (ethereum, base, arbitrum, optimism, polygon, bsc, avax...), with the block's own timestamp. For historical state queries and event filters.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/block-by-date
Block number closest to a date and time on EVM chains (ethereum, base, arbitrum, optimism, polygon, bsc, avax...), with the block's own timestamp. For historical state queries and event filters.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/blockchain-status
Live status of Bitcoin, Solana and 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): latest block, seconds since last block, gas and whether each …
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/blockchain-status
Live status of Bitcoin, Solana and 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): latest block, seconds since last block, gas and whether each …
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/book-info
Book data by ISBN (10 or 13) or search by title and author on Open Library: title, authors, publisher, year, pages, languages, subjects, cover and links.
PolygonSearchn/a/ request
2026-10-07
https://api.vextorium.com/v1/book-info
Book data by ISBN (10 or 13) or search by title and author on Open Library: title, authors, publisher, year, pages, languages, subjects, cover and links.
OptimismSearchn/a/ request
2026-10-07
https://api.vextorium.com/v1/broken-links
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 toolsn/a/ request
2026-10-05
https://api.vextorium.com/v1/broken-links
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 toolsn/a/ request
2026-10-05
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…
PolygonOnchain 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.