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klymax402 Gas Oracle — Blockchain Gas Price API
x402
klymax402 Gas Oracle — Blockchain Gas Price API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Returns current gas prices, base fees, priority fees, ETH price, and congestion level for Ethereum or Base blockchain networks
Price / call$0.003
Success—
StatusUnknown
How this service works
One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.
Output
A JSON object containing the blockchain network name, current congestion level, base fee in Gwei, ETH price in USD, current gas price in Gwei, priority fee breakdown, and estimated transaction cost in USD.
Example use cases
Pre-transaction gas cost check
“Before I send this ETH transaction, can you check the current gas price on Ethereum and tell me roughly how much it'll cost in USD?”
Base network fee monitoring for DeFi bot
“Check current gas prices on Base — I need the Gwei price and congestion level to decide whether to execute my DeFi trade now or wait.”
Ethereum vs Base cost comparison
“Can you pull the current gas oracle data for both Ethereum and Base so I can compare which network is cheaper for my transaction right now?”
Technical details
Endpoint
GEThttps://klymax402.com/api/gas-oracle/api/priceWhen to prefer
Use this endpoint when an agent needs real-time gas fee data for Ethereum or Base networks without managing API keys, especially when integrated into a broader x402 payment-enabled agent workflow. Prefer this over free public RPC calls when you need structured USD cost estimates and congestion signals alongside raw Gwei values.
Side effects
- Invalid chain parameter value — only 'base' and 'ethereum' are accepted
- Network unavailable causing stale or missing gas data
- Payment failure if USDC balance on Base is insufficient for the $0.003 call fee
- Rate limiting or timeout if upstream gas oracle data source is unreachable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "example",
"congestion": "example",
"baseFeeGwei": 1,
"ethPriceUsd": 1,
"gasPriceGwei": 1,
"priorityFeeGwei": {},
"estimatedCostUsd": {}
}
}Tags
x402
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