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Base Network Gas Price Oracle
x402
Base Network Gas Price Oracle is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).
Returns current Base (Layer 2) gas prices across slow/standard/fast tiers with estimated USD costs for a given gas limit
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
A JSON object containing: current block number, chain ID (8453), base fee in gwei, gas price in gwei, congestion score (0-1), recommended tier, per-tier breakdown (slow/standard/fast) with maxFeePerGas, maxPriorityFeePerGas in gwei, estimated cost in USD, EIP-1559 tx fields as hex strings (type 0x2), estimated ETH transfer cost, and a timestamp. Sources array lists the RPC endpoints consulted.
Example use cases
Pre-trade gas cost estimation
“Before I submit this token swap on Base, what will the gas cost me in USD at the standard tier? Assume 150000 gas units.”
Network congestion check before deployment
“Is Base congested right now? Give me the current congestion level and what maxFeePerGas I should use for a fast transaction.”
Automated DeFi bot fee management
“I need the current Base gas prices across all tiers so my trading bot can decide whether fees are low enough to execute arbitrage — what are the current gwei values and USD estimates?”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/base-gas?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time, multi-tier EIP-1559 gas estimates specifically for Base (Chain ID 8453) with USD cost estimates pre-calculated — particularly useful for AI agents that need to autonomously decide gas settings without API keys, paying only $0.001 USDC per call via x402. Prefer over Ethereum mainnet gas APIs when targeting Base L2, and prefer over static gas estimates when network conditions matter.
Side effects
- RPC node unavailable — Base mainnet.base.org unresponsive, may return 502 or stale data
- gas_limit below 21000 or above 30000000 returns 400 validation error
- Payment failure via x402 — USDC balance insufficient on Base or payment header malformed
- Stale data if Base chain is experiencing unusual block times
- Network timeout if Base RPC is congested during high traffic periods
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 37000000,
"chain": "base",
"tiers": {
"fast": {
"est_cost_usd": 0.0007,
"max_fee_gwei": 0.025,
"max_priority_fee_gwei": 0.01
},
"slow": {
"est_cost_usd": 0.0005,
"max_fee_gwei": 0.006,
"max_priority_fee_gwei": 0.001
},
"standard": {
"est_cost_usd": 0.0005,
"max_fee_gwei": 0.011,
"max_priority_fee_gwei": 0.001
}
},
"sources": [
"https://mainnet.base.org"
],
"chain_id": 8453,
"tx_fields": {
"gas": "0x5208",
"type": "0x2",
"maxFeePerGas": "0xa7d8c0",
"maxPriorityFeePerGas": "0xf4240"
},
"congestion": 0.42,
"updated_at": "2026-10-29T13:30:00Z",
"base_fee_gwei": 0.005,
"gas_price_gwei": 0.006,
"recommended_tier": "standard",
"gas_price_wei_hex": "0x5b8d80",
"est_transfer_cost_eth": 1.26e-7,
"max_priority_fee_gwei": 0.001,
"max_priority_fee_wei_hex": "0xf4240"
}
}Tags
x402
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