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Hermes x402 Toolkit – Base Chain Gas Price Lookup
x402
Hermes x402 Toolkit – Base Chain Gas Price Lookup is a paid API for AI agents from api.zlovev.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-17).
Returns current Base (EVM) network gas prices and USD cost estimates for specified gas amounts, using live ETH/USD pricing.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call data API for AI agents. No API key, no account, no signup — pay USDC on Base (eip155:8453) per request; free /api/meta lists all 22 endpoints. One call each: web page to LLM-ready text and link previews; China A-share quotes and limit-up pool; Chinese text and pinyin; Base/Ethereum on-chain reads (address, token, ERC-20 balances, tx, blocks, transfer history, gas price in USD); NFT records (collection, owner, and ipfs:// tokenURI resolved through public gateways); full-page screenshots; email verification without sending mail; ENS forward/reverse resolution; smart-contract due diligence (ABI, verified source, proxy); token security facts (owner, renounced ownership, paused, bytecode capability selectors); domain dossier (RDAP, DNS, TLS certificate, HTTP facts, hosting network).
Output
Returns a JSON object with: ok (boolean), current block number, ETH/USD exchange rate, current gas price in wei, and an array of cost objects each pairing a requested gas limit with its USD cost.
Example use cases
Pre-flight gas check for DeFi agent
“Before I submit this swap transaction on Base, can you tell me what 200000 and 350000 gas units would cost in USD right now? I want to make sure fees are reasonable.”
Gas budget planner for batch operations
“I'm about to run several on-chain operations on Base. Can you estimate what 21000, 65000, and 500000 gas units will cost in USD at the current gas price?”
Real-time gas monitoring alert
“What is the current gas price on Base in wei, and how much would a simple 21000-gas ETH transfer cost in dollars at today's ETH price?”
Technical details
Endpoint
GEThttps://api.zlovev.com/api/chain/gasWhen to prefer
Choose this endpoint when an AI agent needs real-time gas fee estimates for Base (EVM L2) transactions without setting up API keys or accounts — particularly useful for pay-as-you-go agent workflows that need to budget or gate on current transaction costs. Prefer over self-hosted RPC calls when simplicity and no-account access matter.
Side effects
- More than 8 gas_limits values provided — request rejected
- Gas limit value outside 21000–5000000 range — validation error
- Malformed comma-separated gas_limits string — parse error
- Payment not provided or insufficient USDC — 402 Payment Required
- Network or upstream RPC unavailability — 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"block": 51389007,
"costs": [
{
"gas": 21000,
"usd": 0.0003
}
],
"eth_usd": 2394.84,
"gas_price_wei": 6000000
}
}Tags
x402
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