x402 merchant

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

as of 2026-10-07

Seller wallet: 0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf
Chains: BaseOptimismPolygon
Hosts: api.vextorium.com
Categories: Onchain data1,038Market data603Other409Developer tools407Web data117Security112Identity111Media78Commerce66AI models36Search27Agents6
First seen: 2026-10-05 · last seen 2026-10-07

What we observed

Payments unknownNo 402 answer2026-10-07Not claimed

See the readings

Endpoints

3,010 registered

https://api.vextorium.com/v1/us-grants
US federal grant opportunities from Grants.gov: title, number, agency, open and close dates, status and link; search by keyword (AI, energy, health...) and agency (NSF, NIH, DOE...), open or forecasted.
PolygonDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-grants
US federal grant opportunities from Grants.gov: title, number, agency, open and close dates, status and link; search by keyword (AI, energy, health...) and agency (NSF, NIH, DOE...), open or forecasted.
OptimismDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-ipos-upcoming
US IPOs and offerings in the pipeline: latest S-1 and F-1 (foreign issuers) registration statements, amendments and final 424B4 prospectuses (priced), with company, stage, date and link.
OptimismOther
n/a/ request
2026-10-06
https://api.vextorium.com/v1/us-ipos-upcoming
US IPOs and offerings in the pipeline: latest S-1 and F-1 (foreign issuers) registration statements, amendments and final 424B4 prospectuses (priced), with company, stage, date and link.
PolygonOther
n/a/ request
2026-10-06
https://api.vextorium.com/v1/us-jobs-report
US labor market: unemployment rate, nonfarm payrolls with monthly job change, and average hourly earnings with annual growth. US Bureau of Labor Statistics, public domain.
OptimismMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-jobs-report
US labor market: unemployment rate, nonfarm payrolls with monthly job change, and average hourly earnings with annual growth. US Bureau of Labor Statistics, public domain.
PolygonMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-market-hours
US stock market clock (NYSE/Nasdaq): open, closed, pre-market or after-hours now (or at a given time), holiday reason, early closes, next open/close and upcoming holidays. Key for 24/7 tokenized stocks.
OptimismMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-market-hours
US stock market clock (NYSE/Nasdaq): open, closed, pre-market or after-hours now (or at a given time), holiday reason, early closes, next open/close and upcoming holidays. Key for 24/7 tokenized stocks.
PolygonMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-mortgage-rates
Average US mortgage rates from Freddie Mac's weekly PMMS survey: 30- and 15-year fixed, latest value, weekly and yearly change and recent series.
OptimismCommerce
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-mortgage-rates
Average US mortgage rates from Freddie Mac's weekly PMMS survey: 30- and 15-year fixed, latest value, weekly and yearly change and recent series.
PolygonCommerce
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-national-debt
Total US public debt outstanding to the penny (held by the public and intragovernmental), with its change over 30 days and one year and the average daily increase. Official US Treasury Fiscal Data.
PolygonMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-national-debt
Total US public debt outstanding to the penny (held by the public and intragovernmental), with its change over 30 days and one year and the average daily increase. Official US Treasury Fiscal Data.
OptimismMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-treasury-auctions
US Treasury debt auctions (bills, notes, bonds, TIPS, FRNs): upcoming announced auctions or recent results with term, offering amount, high yield and bid-to-cover demand. Official Fiscal Data.
OptimismOther
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-treasury-auctions
US Treasury debt auctions (bills, notes, bonds, TIPS, FRNs): upcoming announced auctions or recent results with term, offering amount, high yield and bid-to-cover demand. Official Fiscal Data.
PolygonOther
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-treasury-fx-rates
Official US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country.
OptimismMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-treasury-fx-rates
Official US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country.
PolygonMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/us-treasury-yield-curve
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).
OptimismMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/us-treasury-yield-curve
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).
PolygonMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/us-weather
Official US National Weather Service forecast for coordinates in the United States: next 7 days or hourly, temperature (F and C), wind, chance of rain, plus active weather alerts.
OptimismOther
n/a/ request
2026-10-06
https://api.vextorium.com/v1/us-weather
Official US National Weather Service forecast for coordinates in the United States: next 7 days or hourly, temperature (F and C), wind, chance of rain, plus active weather alerts.
PolygonOther
n/a/ request
2026-10-06
https://api.vextorium.com/v1/user-agent-parse
Parse a User-Agent string: browser and version, OS and version, device brand and model, device type (mobile, tablet, desktop) and whether it is a bot, an AI crawler (GPTBot, ClaudeBot...) or an HTTP library.
PolygonDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/user-agent-parse
Parse a User-Agent string: browser and version, OS and version, device brand and model, device type (mobile, tablet, desktop) and whether it is a bot, an AI crawler (GPTBot, ClaudeBot...) or an HTTP library.
OptimismDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/utxo-balance
Balance of a Litecoin, Dogecoin or Dash address (detected from the prefix if not given): confirmed and pending balance, total received and sent, transaction count and USD value.
PolygonOnchain data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/utxo-balance
Balance of a Litecoin, Dogecoin or Dash address (detected from the prefix if not given): confirmed and pending balance, total received and sent, transaction count and USD value.
OptimismOnchain data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/uuid
Generate cryptographically secure unique IDs: UUID v4, time-sortable UUID v7, ULID, NanoID, hex, base58 or prefixed tokens (e.g. ord_...), up to 1000 per call.
PolygonDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/uuid
Generate cryptographically secure unique IDs: UUID v4, time-sortable UUID v7, ULID, NanoID, hex, base58 or prefixed tokens (e.g. ord_...), up to 1000 per call.
OptimismDeveloper tools
n/a/ request
2026-10-07
https://api.vextorium.com/v1/vat-calculate
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
2026-10-07
https://api.vextorium.com/v1/vat-calculate
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
2026-10-07
https://api.vextorium.com/v1/vehicle-recalls
Safety recall campaigns for a vehicle by make, model and year in the US: affected component, summary, consequence, remedy, date, over-the-air fix and do-not-drive flags. Official NHTSA data.
PolygonSecurity
n/a/ request
2026-10-06
https://api.vextorium.com/v1/vehicle-recalls
Safety recall campaigns for a vehicle by make, model and year in the US: affected component, summary, consequence, remedy, date, over-the-air fix and do-not-drive flags. Official NHTSA data.
OptimismSecurity
n/a/ request
2026-10-06
https://api.vextorium.com/v1/vin-decode
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.
PolygonOther
n/a/ request
2026-10-07
https://api.vextorium.com/v1/vin-decode
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.
OptimismOther
n/a/ request
2026-10-07
https://api.vextorium.com/v1/virtuals-agent
Full detail of one AI agent token on Virtuals Protocol by name or symbol (AIXBT, Toshi...): market cap, 1h/6h/24h change, volume, holders and 24h holder growth, top-10 concentration, liquidity, category, chain, contract…
OptimismMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/virtuals-agent
Full detail of one AI agent token on Virtuals Protocol by name or symbol (AIXBT, Toshi...): market cap, 1h/6h/24h change, volume, holders and 24h holder growth, top-10 concentration, liquidity, category, chain, contract…
PolygonMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/virtuals-agents
AI agent tokens on Virtuals Protocol (Base and Solana): search by name/symbol/category, or rank by market cap, 24h volume, top gainers/losers, newest launches or holders. Returns market cap, 24h change, volume, holders,…
OptimismMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/virtuals-agents
AI agent tokens on Virtuals Protocol (Base and Solana): search by name/symbol/category, or rank by market cap, 24h volume, top gainers/losers, newest launches or holders. Returns market cap, 24h change, volume, holders,…
PolygonMarket data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-analysis
Wallet analysis read directly from the blockchain on Base, Ethereum, Arbitrum, Optimism or Polygon (account type incl. smart wallet / EIP-7702, sent transaction count, ENS name, native and USDC/stablecoin balances with …
OptimismOnchain data
n/a/ request
2026-10-03
https://api.vextorium.com/v1/wallet-balances
Wallet balances on Base or Ethereum in one call: native ETH plus WETH, USDC, USDT, DAI and cbBTC/WBTC (and optionally any extra ERC-20), with approximate USD value from Chainlink oracles.
PolygonOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-balances
Wallet balances on Base or Ethereum in one call: native ETH plus WETH, USDC, USDT, DAI and cbBTC/WBTC (and optionally any extra ERC-20), with approximate USD value from Chainlink oracles.
OptimismOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-identity
Who an EVM address is before you interact: public labels (exchange, protocol, bridge, fund...), ENS name, whether it is a contract and which, verification, scam flag or poor reputation, EIP-7702 delegation, balance and …
PolygonOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-identity
Who an EVM address is before you interact: public labels (exchange, protocol, bridge, fund...), ENS name, whether it is a contract and which, verification, scam flag or poor reputation, EIP-7702 delegation, balance and …
OptimismOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-portfolio
Every ERC-20 token held by an EVM address (not just the majors) with amount, price and USD value when quoted, token holder count and reputation (scam-flagged tokens hidden by default), plus native balance and total USD.
PolygonOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-portfolio
Every ERC-20 token held by an EVM address (not just the majors) with amount, price and USD value when quoted, token holder count and reputation (scam-flagged tokens hidden by default), plus native balance and total USD.
OptimismOnchain data
n/a/ request
2026-10-06
https://api.vextorium.com/v1/wallet-sanctions-check
Check whether a crypto address (Bitcoin, Ethereum/EVM, Tron, Solana, Litecoin, Monero...) is on the US OFAC SDN sanctions list: sanctioned person or entity, program (country or regime) and currency. Compliance check bef…
PolygonSecurity
n/a/ request
2026-10-07
https://api.vextorium.com/v1/wallet-sanctions-check
Check whether a crypto address (Bitcoin, Ethereum/EVM, Tron, Solana, Litecoin, Monero...) is on the US OFAC SDN sanctions list: sanctioned person or entity, program (country or regime) and currency. Compliance check bef…
OptimismSecurity
n/a/ request
2026-10-07
https://api.vextorium.com/v1/wallet-token-transfers
Token transfers (ERC-20, ERC-721 NFTs or ERC-1155) sent or received by an EVM address: date, token, amount, from, to, in/out and transaction, with totals per token.
OptimismOnchain data
n/a/ request
2026-10-03
https://api.vextorium.com/v1/wash-trading
Is a token's volume real or inflated (wash trading)? 0-100 organic score and verdict (organic, doubtful, inflated) from volume-to-liquidity turnover, number and size of trades, buy/sell balance and volume spikes, each s…
OptimismMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/wash-trading
Is a token's volume real or inflated (wash trading)? 0-100 organic score and verdict (organic, doubtful, inflated) from volume-to-liquidity turnover, number and size of trades, buy/sell balance and volume spikes, each s…
PolygonMarket data
n/a/ request
2026-10-07
https://api.vextorium.com/v1/wash-trend
Is a token's volume authenticity getting worse or better? Compares the current organic score, volume, trades and liquidity with snapshots taken ~1h, ~6h and ~24h ago: STABLE (ESTABLE), DEGRADING (EMPEORANDO) or IMPROVIN…
PolygonOther
n/a/ request
2026-10-07
https://api.vextorium.com/v1/wash-trend
Is a token's volume authenticity getting worse or better? Compares the current organic score, volume, trades and liquidity with snapshots taken ~1h, ~6h and ~24h ago: STABLE (ESTABLE), DEGRADING (EMPEORANDO) or IMPROVIN…
OptimismOther
n/a/ request
2026-10-07

Evidence

as of 2026-10-07

Answers HTTP 402

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)

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

Lowest

$0.001

per request, as registeredas of 2026-10-07

Highest

$0.02

per request, as registeredas of 2026-10-07

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.