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Base Network Gas Price Oracle
x402
Base Network Gas Price Oracle is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).
Returns the current Base network base fee, max priority fee, and gas price by querying the latest block
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs the latest Base base fee, max priority fee, and gas price. Send block latest, or omit it. Read-only eth_getBlockByNumber, eth_maxPriorityFeePerGas, and eth_gasPrice. No address. Send JSON {"block":"latest"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/base-gas first.
Output
Returns the current Base network gas parameters from the latest block: the base fee per gas (from EIP-1559), the max priority fee per gas (miner tip), and the overall gas price, all in wei or gwei units.
Example use cases
Pre-transaction gas check
“Before I submit this token swap on Base, can you check the current gas price and base fee so I know what I'll be paying?”
Gas fee monitoring for DeFi bot
“What are the current Base network gas fees? I want to know the base fee and max priority fee before my bot decides whether to execute this trade.”
Gas cost estimation for NFT mint
“Check the latest gas price on Base for me — I'm about to mint an NFT and want to know if fees are reasonable right now.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/base-gas?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs real-time Base L2 gas fee data without running its own Ethereum node or managing RPC credentials. Ideal for agents executing or timing transactions on Base that need EIP-1559 fee parameters (base fee + priority fee) in a single paid call. Prefer the free /v1/sandbox/base-gas endpoint for testing before paying $0.001 USDC per production call.
Side effects
- Non-'latest' block tags rejected — only 'latest' is accepted
- Network unavailability from Base RPC nodes may cause timeouts or 503 errors
- Payment not received or USDC balance insufficient results in 402 Payment Required
- Malformed JSON body returns 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| block | string | Block tag. Only latest is accepted. Example: latest. Omit it for the same current base fee, priority fee, and gas price. No address and no URL. |
Tags
x402
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