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Cortex Cloud Gas Oracle
x402
Cortex Cloud Gas Oracle is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-28).
Returns the current base fee and priority fee (gas price) for a specified blockchain, powered by Alchemy, via x402 micropayment.
Price / call$0.004
Success—
StatusUnknown
How this service works
Current base fee + priority fee (gas price) for a chain (Alchemy). x402-paid, USDC on Base.
Output
Returns the current base fee and priority fee (gas price) for the requested blockchain network, sourced from Alchemy's gas oracle. Typical response includes EIP-1559 parameters: base fee per gas and max priority fee per gas, expressed in standard units (e.g. gwei).
Example use cases
Pre-flight gas check before transaction
“Before I send this USDC transfer on Ethereum, can you check the current base fee and priority fee so I know what gas to set?”
Gas cost monitoring for DeFi bot
“I'm running an arbitrage bot on Arbitrum — what are the current gas fees there so I can decide if this trade is still profitable?”
Cross-chain gas comparison for bridging
“I'm about to bridge tokens and want to pick the cheapest chain — can you pull the current gas oracle data for Ethereum, Polygon, and Base?”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/v1/data/gas-oracle?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time, reliable gas price data (base fee + priority fee) for EVM-compatible chains, especially within an agent workflow that already uses x402 USDC micropayments on Base. It is particularly suited for pre-transaction gas estimation, cost-gating DeFi operations, or any automated agent that submits on-chain transactions and needs accurate EIP-1559 parameters without managing an Alchemy API key directly.
Side effects
- Unsupported chain identifier returns an error or empty result
- Alchemy backend outage causes upstream failure
- Missing or invalid chain parameter results in a 400-level error
- Payment failure via x402 if USDC balance is insufficient or Base network is congested
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "ethereum",
"currency": "USDC",
"cache_hit": false,
"price_usd": 0.004,
"base_fee_gwei": 0.051562,
"priority_fee_gwei": 0.000006
}
}Tags
x402
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