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Base Gas Conditions Snapshot
x402
Base Gas Conditions Snapshot is a paid API for AI agents from onchaincheck.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Returns real-time Base network gas metrics including block number, base fee, gas price, priority fee in gwei, and estimated ETH and USD costs for native and ERC-20 transfers.
Price / call$0.005
Success—
StatusUnknown
How this service works
Current Base 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).
Output
A JSON object containing: the chain name ('base'), current block number, block timestamp, ETH/USD price from Chainlink, base fee in gwei, gas price in gwei, max priority fee in gwei, and estimated costs (in both native ETH and USD) for a native ETH transfer and an ERC-20 token transfer. Also includes a note that Base's L1 data fee is excluded.
Example use cases
Pre-transaction gas check
“Before I send this token transfer on Base, can you tell me what gas is looking like right now — specifically the base fee, gas price, and how much an ERC-20 transfer would cost me in dollars?”
Gas cost alerting for automation
“Check the current Base gas price and estimated ERC-20 transfer cost — I want to know if it's below $0.001 so I can decide whether to trigger my batch of transactions now.”
Real-time gas dashboard update
“Pull the latest Base network gas snapshot for me — block number, base fee, gas price, priority fee in gwei, and the USD cost of a native transfer and a token transfer — I need to refresh my dashboard.”
Technical details
Endpoint
GEThttps://onchaincheck.dev/base/gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, pre-packaged snapshot of Base network gas conditions including USD cost estimates derived from live ETH price data — particularly useful for agents that need to decide whether to submit a transaction, display gas costs to users, or monitor Base gas trends without building their own RPC and price-feed integration.
Side effects
- Network or RPC node unavailability may return a 5xx error
- Chainlink ETH/USD price feed may be stale during extreme volatility, affecting USD estimates
- Rate limiting or payment failure may return a 402 or 429 response
- Temporary block indexing lag may return a slightly outdated block number
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Excludes Base's L1 data fee, which adds a small amount per transaction.",
"chain": "base",
"blockTime": "2026-10-22T15:49:57.000Z",
"nativeUsd": 2388.88,
"baseFeeGwei": "0.005",
"blockNumber": 52947425,
"gasPriceGwei": "0.006",
"nativeSymbol": "ETH",
"estimatedCost": {
"erc20Transfer": {
"usd": 0.0009317,
"native": "0.00000039"
},
"nativeTransfer": {
"usd": 0.000301,
"native": "0.000000126"
}
},
"maxPriorityFeeGwei": "0.001"
}
}Tags
x402
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