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Arbitrum One Gas Conditions
x402
Arbitrum One Gas Conditions is a paid API for AI agents from ca-tax-api-mainnet.lxtap.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).
Returns current Arbitrum One gas metrics (block number, base fee, gas price, priority fee) plus estimated ETH and USD cost for a native transfer and an ERC-20 transfer.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call data for AI agents, paid in USDC on Base with x402: token risk checks (rug check) on Base, Ethereum, Arbitrum, Optimism, Polygon and Solana, onchain reads (balances, transactions, gas, contracts, NFTs, whale trades, new pools, ENS and Basenames), ECB exchange rates, and Canadian sales tax and business days.
Output
A JSON object containing the current Arbitrum One block number, base fee in gwei, gas price in gwei, priority fee in gwei, estimated cost of a native ETH transfer in ETH and USD, and estimated cost of an ERC-20 transfer in ETH and USD (using Chainlink ETH/USD price feed).
Example use cases
Pre-trade gas cost check
“Before I send this ERC-20 token on Arbitrum One, can you check current gas prices and tell me roughly how much the transaction will cost me in USD?”
Gas timing for DeFi automation
“Check the current Arbitrum One gas conditions — I want to know if base fees are low enough right now to execute my yield rebalancing strategy without paying too much.”
Onchain analytics dashboard update
“Fetch the latest Arbitrum One block number, base fee, and estimated transfer costs in ETH and USD so I can update my gas tracker dashboard.”
Technical details
Endpoint
GEThttps://ca-tax-api-mainnet.lxtap.workers.dev/arbitrum/gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, all-in-one snapshot of current Arbitrum One gas conditions including both gwei-denominated fee components and real-world USD cost estimates for common transaction types. It is particularly useful before submitting transactions or when building gas-aware automation on Arbitrum One, and is cheaper and faster than querying multiple RPC calls or a general-purpose block explorer API.
Side effects
- RPC node unavailable — upstream Arbitrum node unreachable, returns 5xx
- Chainlink price feed stale — ETH/USD price unavailable, USD estimates may be missing
- Rate limiting — too many concurrent requests may result in 429
- Network congestion causing delayed block data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Excludes Arbitrum One's L1 data fee, which adds a small amount per transaction.",
"chain": "arbitrum",
"blockTime": "2026-10-22T15:50:24.000Z",
"nativeUsd": 2392.97,
"baseFeeGwei": "0.020256",
"blockNumber": 517269449,
"gasPriceGwei": "0.020256",
"nativeSymbol": "ETH",
"estimatedCost": {
"erc20Transfer": {
"usd": 0.003151,
"native": "0.00000131664"
},
"nativeTransfer": {
"usd": 0.001018,
"native": "0.000000425376"
}
},
"maxPriorityFeeGwei": "0"
}
}Tags
x402
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