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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 2026-09-14).
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
One pay-per-call API for AI agents: optimization, AI, research, on-chain data, and automation — all settled in USDC on Base via x402. Discover via MCP and Bazaar, estimate free, pay per call. No API keys, no signup.
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-oracleWhen 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 |
|---|---|---|
| input | — | |
| output | — |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {}
}Tags
x402
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