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DeFi Shield Gas Oracle
x402
DeFi Shield Gas Oracle is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Returns current gas prices with swap cost estimates and timing recommendations for DeFi transactions
Price / call$0.05
Success—
StatusUnknown
Output
Returns current gas price levels (base fee, priority fee, gwei estimates), estimated cost for a swap transaction in USD/ETH, and a timing recommendation indicating whether current conditions are favorable, expensive, or neutral for transacting.
Example use cases
Example prompt
“What are the current gas prices and how much would a typical token swap cost right now — and should I wait for cheaper gas or execute now?”
Technical details
Endpoint
POSThttps://defi-shield-hazel.vercel.app/api/mev/gas-oracleWhen to prefer
Use this endpoint when an agent needs to decide whether to execute a DeFi swap or transaction based on current network congestion and cost. Ideal for transaction routing agents, DeFi bots, or portfolio managers that need to time transactions. Prefer over generic gas APIs when you also need swap-specific cost estimates and actionable timing recommendations bundled together.
Side effects
- Gas oracle data unavailable due to RPC node issues — returns 503
- Invalid request body parameters — returns 400 with validation error
- Payment not processed — returns 402 requiring x402 payment of $0.05 USDC
- Upstream gas price feed timeout — returns 504
- Rate limit exceeded — returns 429
Input
{
"chainId": 1,
"tokenIn": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"amountIn": "1000000000",
"tokenOut": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"slippageTolerance": 0.5
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"network": "base",
"data_age": "2026-06-12T03:59:05.993Z",
"gas_gwei": {
"fast": 0.0054,
"slow": 0.0054,
"standard": 0.0054
},
"cache_ttl": 300,
"eth_price_usd": 1670.52,
"recommendation": "Base L2 gas is extremely cheap. Execute freely — costs are sub-cent.",
"estimated_costs": {
"swap_usd": {
"fast": 0.001353,
"slow": 0.001353,
"standard": 0.001353,
"gas_units": 150000
},
"approve_usd": {
"fast": 0.000415,
"slow": 0.000415,
"standard": 0.000415,
"gas_units": 46000
},
"transfer_usd": {
"fast": 0.000189,
"slow": 0.000189,
"standard": 0.000189,
"gas_units": 21000
}
},
"eth_price_source": "DEX Screener (kyo-finance)",
"response_time_ms": 104
}Tags
x402
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