ca-tax-api-mainnet.lxtap.workers.dev

• https://ca-tax-api-mainnet.lxtap.workers.dev/x402/ping

  The smallest real x402 paid call: costs $0.001 in USDC and returns ok with the server time and payment network. Useful for checking that an x402 client can sign and settle a payment end to end.

  BaseDeveloper tools

  $0.001/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/allowance

  ERC-20 allowance on Arbitrum One: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/balances

  Native ETH balance of a Arbitrum One wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Arbitrum One.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/contract

  Identify what lives at a Arbitrum One address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation a…

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/gas

  Current Arbitrum One gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD).

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/tx

  Human-readable summary of a Arbitrum One transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/allowance

  ERC-20 allowance on Base: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/balances

  Native ETH balance of a Base wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Base mainnet.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/basename

  Resolve a Basename (name.base.eth) to its Base address and profile records (avatar, description, url, Twitter, GitHub). Accepts "jesse", "jesse.base" or "jesse.base.eth".

  BaseWeb data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/contract

  Identify what lives at a Base address: wallet (EOA) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, bytecode size, nonce and ETH …

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/gas

  Current Base gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of an ETH transfer and an ERC-20 transfer (Chainlink ETH/USD).

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/tx

  Human-readable summary of a Base transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/business-days

  Number of business days between two dates in a Canadian province or territory, excluding weekends and that province's statutory holidays (with weekend holidays moved to their observed weekday). Counts from the start dat…

  BaseOther

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/allowance

  ERC-20 allowance on Ethereum: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/balances

  Native ETH balance of a Ethereum wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Ethereum.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/contract

  Identify what lives at a Ethereum address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and a…

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/ens

  ENS on Ethereum: resolve a name (vitalik.eth) to its address and profile records (avatar, description, url, Twitter, GitHub), or pass an address instead to get its primary ENS name. Uses ENS's universal resolver.

  BaseWeb data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/gas

  Current Ethereum gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD).

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/tx

  Human-readable summary of a Ethereum transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/fx/convert

  Convert an amount between two currencies at the European Central Bank daily reference rate, latest or for a past date, returning the rate used, the result, and the rate date.

  BaseMarket data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/fx/rates

  European Central Bank daily reference exchange rates for about 30 major currencies, from any base currency, latest or for a past date. Rates update once per working day; the response states which day.

  BaseMarket data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/allowance

  ERC-20 allowance on OP Mainnet: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/balances

  Native ETH balance of a OP Mainnet wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from OP Mainnet.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/contract

  Identify what lives at a OP Mainnet address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and…

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/gas

  Current OP Mainnet gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD).

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/tx

  Human-readable summary of a OP Mainnet transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/allowance

  ERC-20 allowance on Polygon PoS: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/balances

  Native POL balance of a Polygon PoS wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Polygon PoS.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/contract

  Identify what lives at a Polygon PoS address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation an…

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/gas

  Current Polygon PoS gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in POL and USD of a native transfer and an ERC-20 transfer (Chainlink POL/USD).

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/tx

  Human-readable summary of a Polygon PoS transaction: status, block and time, sender and recipient, POL value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts.

  BaseOnchain data

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/tax

  Canadian sales tax breakdown for an amount in a province or territory: GST, HST, PST, RST or QST with each rate and amount rounded to the cent, plus the total. Rates are looked up for the given date (default today), so …

  BaseOther

  $0.005/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/nft

  Metadata for an ERC-721 or ERC-1155 token on Arbitrum One: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-l…

  BaseOnchain data

  $0.008/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/nft

  Metadata for an ERC-721 or ERC-1155 token on Base: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable …

  BaseOnchain data

  $0.008/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/nft

  Metadata for an ERC-721 or ERC-1155 token on Ethereum: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loada…

  BaseOnchain data

  $0.008/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/nft

  Metadata for an ERC-721 or ERC-1155 token on OP Mainnet: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loa…

  BaseOnchain data

  $0.008/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/nft

  Metadata for an ERC-721 or ERC-1155 token on Polygon PoS: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-lo…

  BaseOnchain data

  $0.008/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/new-pools

  New trading pools created on Arbitrum One in the last N minutes on Uniswap v4, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity whe…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/token

  Due-diligence snapshot of an ERC-20 token on Arbitrum One: name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, …

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/new-pools

  New trading pools created on Base in the last N minutes on Uniswap v4, Uniswap v3 or Aerodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidit…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/base/token

  Due-diligence snapshot of an ERC-20 token on Base: name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklis…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/new-pools

  New trading pools created on Ethereum in the last N minutes on Uniswap v4, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity where r…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/eth/token

  Due-diligence snapshot of an ERC-20 token on Ethereum: name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blac…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/holidays

  Statutory (general) holidays for a Canadian province or territory in a given year, using the province's local names, with the actual date and the weekday it is observed when it falls on a weekend.

  BaseOther

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/new-pools

  New trading pools created on OP Mainnet in the last N minutes on Uniswap v4, Uniswap v3 or Velodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote li…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/token

  Due-diligence snapshot of an ERC-20 token on OP Mainnet: name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, bl…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/new-pools

  New trading pools created on Polygon PoS in the last N minutes on Uniswap v4, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with POL, WPOL or USDC, and quote liquidity wher…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/token

  Due-diligence snapshot of an ERC-20 token on Polygon PoS: name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, b…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/solana/token

  Due-diligence snapshot of a Solana SPL or Token-2022 token: name, symbol, supply, mint and freeze authority, Token-2022 controls (permanent delegate, transfer fees, transfer hook, pausable), metadata mutability, top-hol…

  BaseOnchain data

  $0.01/ request

  2026-10-22

• https://ca-tax-api-mainnet.lxtap.workers.dev/token

  Is this token safe? Rug check for any token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a 0-100 risk score with plain reasons (mint, freeze, blacklist, fee, pause or trading-switch powers, upgradeable code…

  BaseSecurity

  $0.01/ request

  2026-10-23

By chain

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.

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.