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Base Gas Price Alert & Transaction Cost Monitor
x402
Base Gas Price Alert & Transaction Cost Monitor is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Checks current Base network gas prices against a user-defined threshold and returns transaction cost estimates with actionable recommendations
Price / call$0.1
Success—
StatusUnknown
Output
Returns the current Base gas price, whether it is above or below the specified threshold, estimated transaction costs in ETH and USD for the requested transaction type, and a recommendation on whether to proceed or wait for lower fees.
Example use cases
Example prompt
“Check if Base gas prices are currently below 0.5 gwei and give me an estimate of what a standard ERC-20 transfer would cost right now, plus a recommendation on whether I should wait or proceed.”
Technical details
Endpoint
POSThttps://defi-shield-hazel.vercel.app/api/monitor/gas-alertWhen to prefer
Use this endpoint when an agent needs to make a real-time decision about submitting a transaction on Base and wants to compare current gas prices against a budget threshold, rather than just fetching raw gas data without context or recommendations.
Side effects
- Base RPC node unavailable — returns error with no gas data
- Invalid threshold value provided — returns validation error
- Gas oracle data stale or unavailable — returns degraded estimate with warning
- Network congestion causing timeout — may return partial data
Input
{
"gasLimit": 21000,
"threshold": 50,
"notifyEmail": "zero-qa@agentmail.to"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"timestamp": "2026-06-16T01:17:31.633Z",
"recommendation": "Gas prices are low. Good time for batch transactions and contract deployments.",
"threshold_gwei": 50,
"alert_triggered": false,
"estimated_costs": {
"dex_swap": {
"cost_eth": 8.3e-7,
"cost_usd": 0.0029,
"cost_gwei": 825,
"gas_limit": 150000
},
"erc20_transfer": {
"cost_eth": 3.6e-7,
"cost_usd": 0.0013,
"cost_gwei": 357.5,
"gas_limit": 65000
},
"simple_transfer": {
"cost_eth": 1.2e-7,
"cost_usd": 0.0004,
"cost_gwei": 115.5,
"gas_limit": 21000
}
},
"current_gas_gwei": {
"fast": 0.0055,
"slow": 0.0055,
"standard": 0.0055
},
"response_time_ms": 71,
"is_above_threshold": false,
"current_vs_threshold": {
"delta": -49.994,
"current": 0.0055,
"threshold": 50,
"percentage_of_threshold": 0
}
}Tags
x402
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