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Base Mainnet Gas Price Oracle (gas.apitoll.cloud)
x402
Base Mainnet Gas Price Oracle (gas.apitoll.cloud) is a paid API for AI agents from gas.apitoll.cloud, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns real-time EIP-1559 gas fee tiers (slow/standard/fast) plus base fee, latest block number, and median block fullness for the Base mainnet.
Price / call$0.001
Success—
StatusUnknown
How this service works
Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei — plug straight into a viem/ethers transaction, no gwei conversion. Plus base fee, head block, and network fullness. Call it before every Base tx to set a fair fee or wait out congestion.
Output
A JSON object with three EIP-1559 fee tiers (slow=p10, standard=p50, fast=p90), each containing max_fee_per_gas and max_priority_fee_per_gas in gwei; the predicted next-block base fee in gwei; the latest sampled block number; and stats including timestamp, number of blocks sampled, and median block fullness percentage.
Example use cases
DeFi swap timing optimizer
“Check the current gas fees and block fullness on Base right now. If the fast tier is under 5 gwei, go ahead and execute my swap immediately — otherwise, queue it for later when the network is less congested.”
Batch transaction cost estimator
“I need to send 10 transactions to Base over the next hour. Get me the current slow, standard, and fast gas tiers so I can estimate the total cost and decide which fee tier minimizes my spending without missing my deadline.”
Network congestion alert system
“Pull the latest Base mainnet gas snapshot including block fullness. If median block fullness is above 80%, alert me that the network is congested and I should increase my priority fee by 10% to ensure faster confirmation.”
Technical details
Endpoint
GEThttps://gas.apitoll.cloud/v1/base/gasWhen to prefer
Use this endpoint when you need real-time, EIP-1559-aware gas estimates specifically for the Base mainnet (Coinbase L2), with p10/p50/p90 fee tiers and block congestion signals. Prefer this over generic Ethereum gas APIs when building Base-native dApps, DeFi bots, or transaction schedulers that need structured slow/standard/fast tiers and block fullness context rather than a single gas price value.
Side effects
- RPC node unavailable — upstream eth_feeHistory call fails, returns 5xx
- Invalid blocks parameter (outside 1-50 range) — request rejected or clamped
- Network misconfiguration — may return data for wrong chain if Base RPC is temporarily rerouted
- Rate limiting or payment failure — 402 response if x402 payment not processed
- Empty or sparse block history — tiers may be unreliable if Base has low recent activity
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"blocks": 20
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"stats": {
"ts": "2026-06-10T04:32:29.659Z",
"blocks_sampled": 20,
"median_fullness_pct": 8.66
},
"tiers": {
"fast": {
"max_fee_gwei": 0.0125,
"max_priority_gwei": 0.005
},
"slow": {
"max_fee_gwei": 0.0075,
"max_priority_gwei": 0
},
"standard": {
"max_fee_gwei": 0.0086,
"max_priority_gwei": 0.0011
}
},
"network": "base-mainnet",
"block_number": 47138301,
"base_fee_gwei": 0.005
}Schema · Response
{
"type": "json",
"example": {
"stats": {
"ts": "2026-05-28T15:42:30.000Z",
"blocks_sampled": 20,
"median_fullness_pct": 31.5
},
"tiers": {
"fast": {
"max_fee_gwei": 0.0163,
"max_priority_gwei": 0.01
},
"slow": {
"max_fee_gwei": 0.0083,
"max_priority_gwei": 0.002
},
"standard": {
"max_fee_gwei": 0.0103,
"max_priority_gwei": 0.004
}
},
"network": "base-mainnet",
"block_number": 16842103,
"base_fee_gwei": 0.0042
}
}Tags
x402
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