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CoinOpSelect Gas Price API
x402
CoinOpSelect Gas Price API is a paid API for AI agents from coinop.publicvm.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).
Returns current gas prices in Gwei for Base, Arbitrum, and Ethereum networks via a pay-per-call x402 endpoint.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid on-chain token, wallet, contract and research data over x402 on Base.
Output
A JSON object containing gas prices in Gwei for Base, Arbitrum, and Ethereum networks, along with the data source identifier and a timestamp of when the prices were generated.
Example use cases
Pre-trade gas cost check
“Before I submit this swap on Base, what's the current gas price in Gwei so I can estimate the transaction fee?”
Multi-chain gas comparison
“Compare the current gas prices on Base, Arbitrum, and Ethereum — I want to know which network is cheapest to transact on right now.”
DeFi bot gas monitoring
“Check the current gas price on Ethereum and tell me if it's below 0.5 Gwei so I can decide whether to execute my arbitrage trade.”
Technical details
Endpoint
GEThttps://coinop.publicvm.com/api/v1/market/gas?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need real-time gas price data across Base, Arbitrum, and Ethereum in a single call, and can pay per-call via USDC on Base using the x402 protocol. Ideal for AI agents and DeFi bots that need lightweight, pay-as-you-go gas price lookups without a subscription.
Side effects
- Payment not received or invalid x402 payment header returns 402 Payment Required
- Network unavailable may return stale or missing data for specific chains
- Rate limiting or overload may result in 503 errors
- Malformed request may return 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "stream-2-a2a/gas-price",
"networks": {
"base": {
"gasPriceGwei": 0.01
},
"arbitrum": {
"gasPriceGwei": 0.01
},
"ethereum": {
"gasPriceGwei": 0.3
}
},
"generatedAt": "2026-01-01T00:00:00.000Z"
}
}Tags
x402
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