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/polymarket-holders
Largest holders of each outcome of a Polymarket market (by slug): wallet and shares, with the sum of the top holders. See where the whales are betting.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-market
Detail of one Polymarket market by slug or id: question, resolution rules and source, outcome probabilities, best bid/ask, last price, volume, liquidity and dates.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-market
Detail of one Polymarket market by slug or id: question, resolution rules and source, outcome probabilities, best bid/ask, last price, volume, liquidity and dates.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-markets
Open Polymarket prediction markets: top by 24h volume or liquidity, or matching a search (elections, crypto, sports, economy...), with the implied probability of each outcome, volume, liquidity and close date.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-markets
Open Polymarket prediction markets: top by 24h volume or liquidity, or matching a search (elections, crypto, sports, economy...), with the implied probability of each outcome, volume, liquidity and close date.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-trades
Recent trades of a Polymarket market (by slug): buys and sells per outcome with price, USD size, wallet and tx, net buy/sell flow per outcome and the largest orders. Set a minimum size to follow whales.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-trades
Recent trades of a Polymarket market (by slug): buys and sells per outcome with price, USD size, wallet and tx, net buy/sell flow per outcome and the largest orders. Set a minimum size to follow whales.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-wallet
Open positions of a wallet on Polymarket: market, outcome, shares, average and current price, value, PnL (USD and %), redeemable flag and close date, with portfolio totals.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/polymarket-wallet
Open positions of a wallet on Polymarket: market, outcome, shares, average and current price, value, PnL (USD and %), redeemable flag and close date, with portfolio totals.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-apy-history
History of one liquidity pool's APY and TVL (by its pool id, the 'id' field returned by the DeFi yields service): current, average, min and max APY over the period, current TVL, whether the yield is stable or a one-off …
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-apy-history
History of one liquidity pool's APY and TVL (by its pool id, the 'id' field returned by the DeFi yields service): current, average, min and max APY over the period, current TVL, whether the yield is stable or a one-off …
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-fee-apr
Estimated yield of providing liquidity in a token's pools (or one pool) on any DEX Screener chain: liquidity, 24h volume, pool fee (read on-chain when possible), fees generated, estimated APR, turnover and age, sorted b…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-fee-apr
Estimated yield of providing liquidity in a token's pools (or one pool) on any DEX Screener chain: liquidity, 24h volume, pool fee (read on-chain when possible), fees generated, estimated APR, turnover and age, sorted b…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-swaps
Recent swaps of a DEX pool (Uniswap v2/v3, Aerodrome, SushiSwap, PancakeSwap... on Base, Ethereum, Arbitrum, Optimism or Polygon) read on-chain: buys and sells with USD size, price, wallet and tx, net buy/sell flow, uni…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pool-swaps
Recent swaps of a DEX pool (Uniswap v2/v3, Aerodrome, SushiSwap, PancakeSwap... on Base, Ethereum, Arbitrum, Optimism or Polygon) read on-chain: buys and sells with USD size, price, wallet and tx, net buy/sell flow, uni…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/portfolio-valuation
Value a crypto portfolio such as {"BTC": 0.1, "ETH": 2}: current value and weight of each holding and total; with a start date, its value then, return, annualized volatility and maximum drawdown. Prices from DefiLlama.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/portfolio-valuation
Value a crypto portfolio such as {"BTC": 0.1, "ETH": 2}: current value and weight of each holding and total; with a start date, its value then, return, annualized volatility and maximum drawdown. Prices from DefiLlama.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/position-check
Re-check a token you already hold against your entry: liquidity below 25% of entry, risk score drop, dangerous powers active (mint, freeze, pause...), honeypot pattern or inflated volume. Verdict CLEAN (LIMPIO), DEGRADE…
OptimismSecurityn/a/ request
2026-10-06
https://api.vextorium.com/v1/position-check
Re-check a token you already hold against your entry: liquidity below 25% of entry, risk score drop, dangerous powers active (mint, freeze, pause...), honeypot pattern or inflated volume. Verdict CLEAN (LIMPIO), DEGRADE…
PolygonSecurityn/a/ request
2026-10-06
https://api.vextorium.com/v1/postal-code
Postal code lookup in more than 60 countries (ES, US, DE, FR, GB, IT, MX, BR...): places, province or state and coordinates.
OptimismOthern/a/ request
2026-10-07
https://api.vextorium.com/v1/postal-code
Postal code lookup in more than 60 countries (ES, US, DE, FR, GB, IT, MX, BR...): places, province or state and coordinates.
PolygonOthern/a/ request
2026-10-07
https://api.vextorium.com/v1/pre-trade-check
Before buying or selling a token: risk verdict (contract powers, honeypot pattern, age), main pool liquidity, estimated price impact for your USD amount, recommended slippage and a decision (ok, caution, avoid). Base, E…
OptimismSecurityn/a/ request
2026-10-05
https://api.vextorium.com/v1/pre-trade-check
Before buying or selling a token: risk verdict (contract powers, honeypot pattern, age), main pool liquidity, estimated price impact for your USD amount, recommended slippage and a decision (ok, caution, avoid). Base, E…
PolygonSecurityn/a/ request
2026-10-05
https://api.vextorium.com/v1/price-chart
Daily price series of a token for up to 365 days with change, high, low, maximum drawdown and annualized volatility. Accepts symbols (BTC, ETH, SOL...) or chain:contract ids. Aggregated by DefiLlama.
PolygonMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/price-chart
Daily price series of a token for up to 365 days with change, high, low, maximum drawdown and annualized volatility. Accepts symbols (BTC, ETH, SOL...) or chain:contract ids. Aggregated by DefiLlama.
OptimismMarket datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-compare
Compare two DeFi protocols side by side: TVL, category, number of chains, 7d change, native token and audits, plus which one has more TVL. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/protocol-compare
Compare two DeFi protocols side by side: TVL, category, number of chains, 7d change, native token and audits, plus which one has more TVL. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-05
https://api.vextorium.com/v1/protocol-fees
Fees and revenue of ONE DeFi protocol in detail: 24h, 7d, 30d and all-time totals, with 1d/7d/1m trend. Fees are what users pay; revenue is what the protocol keeps. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-fees
Fees and revenue of ONE DeFi protocol in detail: 24h, 7d, 30d and all-time totals, with 1d/7d/1m trend. Fees are what users pay; revenue is what the protocol keeps. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-security
Security profile of a DeFi protocol by name (Aave, Curve, Pendle...): number of audits and their links, hacks suffered, TVL broken down by chain, category and market cap. More audits and zero hacks is a better signal. L…
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-security
Security profile of a DeFi protocol by name (Aave, Curve, Pendle...): number of audits and their links, hacks suffered, TVL broken down by chain, category and market cap. More audits and zero hacks is a better signal. L…
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-tvl-composition
TVL composition of a DeFi protocol by token (how much is ETH, USDC, WBTC...) and by chain, with weights and top-3 concentration. Measure exposure and concentration risk. DefiLlama data.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-tvl-composition
TVL composition of a DeFi protocol by token (how much is ETH, USDC, WBTC...) and by chain, with weights and top-3 concentration. Measure exposure and concentration risk. DefiLlama data.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-tvl-history
TVL history of a DeFi protocol (up to 5 years): series, 7/30/90/365-day change, all-time high and drawdown from it, and current TVL by chain. Live from DefiLlama.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocol-tvl-history
TVL history of a DeFi protocol (up to 5 years): series, 7/30/90/365-day change, all-time high and drawdown from it, and current TVL by chain. Live from DefiLlama.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocols-by-category
Ranking of DeFi protocols in a category (Lending, Dexs, Liquid Staking, Bridge, Yield, Derivatives, RWA, CDP, Restaking...) by TVL, optionally on one chain, with 1d and 7d change and share of the category.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/protocols-by-category
Ranking of DeFi protocols in a category (Lending, Dexs, Liquid Staking, Bridge, Yield, Derivatives, RWA, CDP, Restaking...) by TVL, optionally on one chain, with 1d and 7d change and share of the category.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/provider-status
Live status of widely used cloud services and APIs (GitHub, Cloudflare, OpenAI, Anthropic, Discord, Vercel, npm, Twilio, DigitalOcean, Coinbase, Atlassian, Netlify, Supabase) from their status pages: overall state, affe…
PolygonAI modelsn/a/ request
2026-10-06
https://api.vextorium.com/v1/provider-status
Live status of widely used cloud services and APIs (GitHub, Cloudflare, OpenAI, Anthropic, Discord, Vercel, npm, Twilio, DigitalOcean, Coinbase, Atlassian, Netlify, Supabase) from their status pages: overall state, affe…
OptimismAI modelsn/a/ request
2026-10-06
https://api.vextorium.com/v1/proxy-detect
Detect whether a contract is an upgradeable proxy (EIP-1967 transparent/UUPS, beacon, ZeppelinOS, EIP-1167 minimal) and return implementation, admin and beacon. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB …
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/proxy-detect
Detect whether a contract is an upgradeable proxy (EIP-1967 transparent/UUPS, beacon, ZeppelinOS, EIP-1167 minimal) and return implementation, admin and beacon. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB …
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/public-holidays
Official public holidays of 150+ countries and their regions (Spanish autonomous communities, US states, German Länder...) for a year, whether a given date is a holiday, and the next holiday.
PolygonOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/public-holidays
Official public holidays of 150+ countries and their regions (Spanish autonomous communities, US states, German Länder...) for a year, whether a given date is a holiday, and the next holiday.
OptimismOthern/a/ request
2026-10-06
https://api.vextorium.com/v1/public-rpcs
Keyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.
PolygonOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/public-rpcs
Keyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.
OptimismOnchain datan/a/ request
2026-10-06
https://api.vextorium.com/v1/pubmed-search
Search biomedical literature on PubMed (NIH): title, authors, journal, date, DOI, PMID and abstract of each article, newest first, with optional year filter.
PolygonSearchn/a/ request
2026-10-06
https://api.vextorium.com/v1/pubmed-search
Search biomedical literature on PubMed (NIH): title, authors, journal, date, DOI, PMID and abstract of each article, newest first, with optional year filter.
OptimismSearchn/a/ request
2026-10-06
https://api.vextorium.com/v1/pypi-package
Python package profile from PyPI: latest version and date, summary, license, required Python, author, links, dependencies, recent downloads and yanked flag.
PolygonDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/pypi-package
Python package profile from PyPI: latest version and date, summary, license, required Python, author, links, dependencies, recent downloads and yanked flag.
OptimismDeveloper toolsn/a/ request
2026-10-06
https://api.vextorium.com/v1/qr-barcode-read
Read the codes in an image URL: QR, Data Matrix, Aztec, PDF417, EAN-13, UPC, Code 128, Code 39... with format, content and position; flags URLs, crypto payment URIs (bitcoin:, ethereum:, solana:) and wifi credentials.
OptimismMedian/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.