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Polyform Crypto Gas Price API
x402
Polyform Crypto Gas Price API is a paid API for AI agents from api.polyform.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Returns the current gas price on the Base blockchain in both wei and gwei units
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call data endpoints for AI agents. USDC on Base via x402. No account, no API key — one micropayment per call.
Output
Returns a JSON object with the chain name ('base'), the current gas price in wei as a string, and the gas price in gwei as a decimal number. Example: {chain: 'base', gasPriceWei: '6000000', gasPriceGwei: 0.006}.
Example use cases
Pre-transaction gas estimation
“Before I send this USDC transfer on Base, what's the current gas price so I can estimate my total transaction cost?”
Gas price monitoring for cost optimization
“Check the current gas price on Base for me — I want to know if it's cheap enough right now to batch my on-chain transactions.”
DeFi bot fee calculation
“What's the gas price on Base in gwei right now? I need to factor it into my arbitrage profit calculation before executing a swap.”
Technical details
Endpoint
GEThttps://api.polyform.org/v1/crypto/gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-account gas price lookup specifically for the Base L2 network and want to pay per call with USDC micropayments rather than managing API keys or subscriptions. Ideal for AI agents that need on-demand blockchain fee data without provisioning credentials.
Side effects
- Base RPC node unavailable or congested — may return a 502 or timeout
- Payment not received or malformed x402 header — returns 402 Payment Required
- Rate-limiting or transient network issues causing 503 responses
- Stale gas price data if upstream node is lagging behind the chain tip
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"gasPriceWei": "6000000",
"gasPriceGwei": 0.006
}
}Tags
x402
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