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md.fastdb.in Gas Price Oracle
x402
md.fastdb.in Gas Price Oracle is a paid API for AI agents from md.fastdb.in, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns live gas data for Ethereum, Base, Arbitrum, Optimism, and Polygon — including base fee, priority fee tiers (slow/standard/fast), and USD transfer cost pulled directly from chain RPC.
Price / call$0.001
Success—
StatusUnknown
How this service works
Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon — base fee, priority fee tiers, and USD transfer cost, straight from chain RPC.
Output
Returns a JSON object with a timestamp, the queried chain(s), native token USD price, current base fee in gwei, gas price in gwei, slow/standard/fast priority fee tiers in gwei, and the estimated USD cost of a standard ETH transfer for each requested chain.
Example use cases
Example prompt
“What are the current gas fees on Base right now — give me the base fee, the fast priority fee in gwei, and how much a simple ETH transfer would cost in USD?”
Technical details
Endpoint
POSThttps://md.fastdb.in/pulse/gasWhen to prefer
Prefer this endpoint when you need real-time, multi-chain gas data from live RPC nodes rather than third-party aggregators, especially when you need both gwei-denominated fees and USD cost estimates in a single call. Ideal for agents making transaction cost decisions, displaying gas to users, or automating DeFi workflows that are cost-sensitive across multiple EVM chains.
Side effects
- Unsupported chain name returns error or empty gas object
- RPC node temporarily unavailable causing stale or missing data
- Network congestion may cause slight lag in fee data
- Invalid POST body format returns 400 error
- Chain field missing from request may default to one chain or return error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"at": "2026-07-17T15:00:00.000Z",
"gas": {
"base": {
"chain": "base",
"nativeUsd": 1818.32,
"baseFeeGwei": 0.005,
"blockNumber": 48755195,
"priorityFee": {
"fastGwei": 0.019,
"slowGwei": 0.0001,
"standardGwei": 0.0011
},
"gasPriceGwei": 0.006,
"nativeSymbol": "ETH",
"transferCostUsd": 0.0002291
}
},
"chains": [
"base"
]
}
}Tags
x402
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