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Ethereum Gas Price Estimator
x402
Ethereum Gas Price Estimator is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Returns current Ethereum mainnet gas price estimates (base fee, priority fee, max fee) across slow/standard/fast speed tiers
Price / call$0.002
Success—
StatusUnknown
How this service works
Live Ethereum mainnet gas pricing from PublicNode RPC: next-block base fee, 25/50/75th-percentile priority tips over the last 5 blocks (slow/std/fast), and a ready-to-sign recommendation (max_fee = 2*base + tip). Query: ?speed=slow|std|fast (default std). All values are decimal gwei, no hex parsing needed. 30s cache.
Output
Returns a JSON object with: recommended gas settings for the requested speed tier (max_fee_gwei, max_priority_fee_gwei, speed), current base_fee_gwei derived from recent blocks, legacy_gas_price_gwei, priority_fee_gwei broken down by slow/std/fast percentiles (25th/50th/75th), number of blocks sampled (default 5), and source description indicating PublicNode RPC.
Example use cases
Example prompt
“What's the current Ethereum gas price? Give me the standard speed recommendation with base fee and max priority fee in gwei.”
Technical details
Endpoint
GEThttps://data.greeneris.io/v1/eth/gasWhen to prefer
Use this endpoint when an AI agent needs real-time Ethereum gas price data without setting up its own RPC node or managing API keys. Ideal for agents automating on-chain transactions, estimating transaction costs, or deciding when to submit a transaction based on current network conditions. Pay-per-call x402 model means no subscription needed.
Side effects
- RPC node unavailable — upstream PublicNode failure returns 5xx
- Payment not made — HTTP 402 returned with machine-readable price quote requiring USDC payment on Base via x402 before retry
- Invalid speed parameter value — non-enum value ignored or error returned
- Network congestion causing stale block data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "Ethereum mainnet via PublicNode RPC (eth_gasPrice + eth_feeHistory, last 5 blocks)",
"recommended": {
"speed": "std",
"max_fee_gwei": 0.135,
"max_priority_fee_gwei": 0.0054
},
"base_fee_gwei": 0.0648,
"blocks_sampled": 5,
"priority_fee_gwei": {
"std": 0.0054,
"fast": 0.1337,
"slow": 0.005
},
"legacy_gas_price_gwei": 0.0609
}
}Tags
x402
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