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FreeTier Agent API — Base Gas Price
x402
FreeTier Agent API — Base Gas Price is a paid API for AI agents from freetier-agent-api.pages.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).
Returns the current Base network gas price in gwei and the estimated ETH cost of a USDC transfer, along with the latest block number.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call data API for AI agents: AI model prices and cost calculator, 4,259 MCP servers, email domain checks, text-to-JSON extraction, country/holiday/currency lookup, page and link checks, page-to-markdown, 2,230 verified APIs. x402, USDC on Base, no signup. Sources cited in every response.
Output
Returns a JSON object with the latest Base block number, the current gas price in gwei (e.g. 0.006 gwei), and the estimated ETH cost of a USDC transfer (e.g. 3.9e-7 ETH). Sources are cited in the response.
Example use cases
Pre-payment gas estimation for agent
“Before my agent sends a USDC payment on Base, can you check the current gas price in gwei and tell me how much ETH the transfer will cost so I know if it's worth proceeding?”
Monitor Base gas before batch transactions
“What's the Base network gas price right now? I want to know if it's low enough to kick off a batch of USDC transfers.”
Real-time gas cost for DeFi decision
“Check the current Base gas price and tell me the ETH cost for a USDC transfer — I'm trying to figure out if fees are reasonable before I move funds.”
Technical details
Endpoint
GEThttps://freetier-agent-api.pages.dev/api/base-gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs a quick, pay-per-call (no signup) lookup of Base network gas prices denominated in gwei and ETH cost of USDC transfers. Particularly useful for agents that need to estimate transaction fees before executing on-chain payments via x402/USDC on Base. Prefer over raw RPC calls when you want a simple REST JSON response with cited sources and no node infrastructure.
Side effects
- Network unavailability — Base RPC node unreachable, returns error response
- Stale data — gas price may lag real-time by a few seconds depending on block frequency
- Invalid payment — x402 USDC payment not processed, returns 402 with payment requirements
- Unexpected schema — rare format changes in Base RPC responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 30000000,
"gas_price_gwei": 0.006,
"usdc_transfer_eth": 3.9e-7
}
}Tags
x402
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