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Vextorium EVM Gas History
x402
Vextorium EVM Gas History is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).
Returns historical gas fees (base fee, tip percentiles, gas usage) for EVM chains over recent blocks, plus next-block base fee prediction and tip recommendations.
Price / call$0.003
Success—
StatusUnknown
How this service works
558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.
Output
Returns a JSON object with: the number of blocks analyzed, a per-block detail array (block number, tip p10/p50/p90 in gwei, base fee in gwei, gas usage %), the average base fee across all blocks, the predicted next base fee, and fast/normal tip recommendations in gwei.
Example use cases
Optimize transaction gas on Arbitrum
“I'm about to send a batch of transactions on Arbitrum — can you check the last 10 blocks of gas history and tell me what tip to use for a normal-speed confirmation?”
Monitor Base network congestion
“How congested is the Base network right now? Show me gas usage percentage and base fees across the last 20 blocks so I can decide whether to wait.”
Predict Ethereum next block fee
“What's the predicted next base fee on Ethereum and what's the fast tip recommendation I should set to get my transaction in the next block?”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/gas-history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need historical gas fee data and tip recommendations for a specific EVM chain (Base, Ethereum, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain) with per-block granularity. Ideal for agents that need to optimize transaction gas settings, monitor network congestion, or predict upcoming fees programmatically via a pay-per-call model.
Side effects
- Invalid or unsupported network name returns an error
- Requesting too many blocks may return partial data or an error
- Network connectivity issues to the chain RPC may yield stale or missing data
- Payment failure via x402 returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| blocks | integer | |
| network | string | Chain (default base) |
Output
Schema · Response
{
"type": "json",
"example": {
"blocks": 10,
"detail": [
{
"block": 52091652,
"tip_p10_gwei": 0,
"tip_p50_gwei": 0.001,
"tip_p90_gwei": 0.005,
"base_fee_gwei": 0.005,
"gas_usage_pct": 8.1
},
{
"block": 52091653,
"tip_p10_gwei": 0,
"tip_p50_gwei": 0.00115,
"tip_p90_gwei": 0.0265,
"base_fee_gwei": 0.005,
"gas_usage_pct": 8.1
}
],
"network": "base",
"avg_base_fee_gwei": 0.005,
"next_base_fee_gwei": 0.005,
"tip_recommendation_gwei": {
"fast": 0.013771,
"normal": 0.001015
}
}
}Tags
x402
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