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agent402.tools Gas Price Snapshot
x402
agent402.tools Gas Price Snapshot is a paid API for AI agents from agent402.tools, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns a live gas price snapshot for a specified EVM chain, including slow/standard/fast tiers in gwei and the latest base fee, sampled from eth_feeHistory.
Price / call$0.005
Success—
StatusUnknown
How this service works
Live gas price snapshot for a chain - slow / standard / fast tiers in gwei, plus the latest base fee. Sampled from eth_feeHistory (last 4 blocks, 25th/50th/90th percentile priority fees). Use to estimate before broadcasting a transaction from another tool.
Output
A snapshot object containing gas price tiers (slow, standard, fast) in gwei plus the current base fee, derived from eth_feeHistory over the last 4 blocks at the 25th, 50th, and 90th percentile priority fees for the requested network.
Example use cases
Example prompt
“What are the current slow, standard, and fast gas prices on Ethereum right now — I need the gwei tiers and the latest base fee before I broadcast a transaction.”
Technical details
Endpoint
POSThttps://agent402.tools/api/gas-snapshotWhen to prefer
Use this endpoint when an agent needs a real-time, multi-tier gas price estimate (slow/standard/fast) for EVM-compatible chains before constructing or broadcasting a transaction. Prefer it over static estimates or manual RPC calls when you need percentile-based fee history across Ethereum, Base, Polygon, Arbitrum, or Optimism in a single call.
Side effects
- Unsupported network name returns an error or defaults to Base
- RPC node unavailability for the target chain causes fetch failure
- Stale data if sampled blocks are delayed
- Invalid or missing network field may default to Base silently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| network | string | ethereum / base / polygon / arbitrum / optimism (default base). |
Output
Schema · Response
{
"type": "json",
"example": {
"fast": {
"totalGwei": 0.01,
"priorityFeeGwei": 0.005
},
"slow": {
"totalGwei": 0.006,
"priorityFeeGwei": 0.001
},
"chainId": 8453,
"network": "base",
"standard": {
"totalGwei": 0.007,
"priorityFeeGwei": 0.002
},
"baseFeeGwei": 0.005
}
}Tags
x402
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