ApiToll Base Gas Oracle

GETdirect listing

Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei — plug straight into a viem/ethers transaction, no gwei conversion. Plus base fee, head block, and network fullness. Call it before every Base tx to set a fair fee or wait out congestion.

#base#gas#gas-oracle#gas-price#transaction-fees

Trust signals

Success rate

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p95 latency

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Calls settled

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Settled volume

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First seen

2 hours ago

This service registered directly with api.cdp.coinbase.com and does not route traffic through us, so we have nothing of our own to measure. Its listing is shown exactly as the registry publishes it.

What it costs

Scheme	Network	Asset	Amount	Pay to
exact	eip155:8453	USD Coin	1000$0.0010	0xcc69d619E6053F88A4845066518f465bD06Fc96c

Request

{
  "method": "GET",
  "queryParams": {
    "blocks": 20
  },
  "type": "http"
}

Response

{
  "example": {
    "base_fee_gwei": 0.0042,
    "base_fee_wei": "4200000",
    "block_number": 16842103,
    "network": "base-mainnet",
    "stats": {
      "blocks_sampled": 20,
      "median_fullness_pct": 31.5,
      "ts": "2026-05-28T15:42:30.000Z"
    },
    "tiers": {
      "fast": {
        "maxFeePerGas": "16300000",
        "maxPriorityFeePerGas": "10000000",
        "max_fee_gwei": 0.0163,
        "max_priority_gwei": 0.01
      },
      "slow": {
        "maxFeePerGas": "8300000",
        "maxPriorityFeePerGas": "2000000",
        "max_fee_gwei": 0.0083,
        "max_priority_gwei": 0.002
      },
      "standard": {
        "maxFeePerGas": "10300000",
        "maxPriorityFeePerGas": "4000000",
        "max_fee_gwei": 0.0103,
        "max_priority_gwei": 0.004
      }
    }
  },
  "type": "json"
}

Source: api.cdp.coinbase.com · registry updated 2 hours ago

Scheme

Network

Asset

Amount

Pay to

exact

eip155:8453

USD Coin

1000$0.0010

0xcc69d619E6053F88A4845066518f465bD06Fc96c

{ "example": { "base_fee_gwei": 0.0042, "base_fee_wei": "4200000", "block_number": 16842103, "network": "base-mainnet", "stats": { "blocks_sampled": 20, "median_fullness_pct": 31.5, "ts": "2026-05-28T15:42:30.000Z" }, "tiers": { "fast": { "maxFeePerGas": "16300000", "maxPriorityFeePerGas": "10000000", "max_fee_gwei": 0.0163, "max_priority_gwei": 0.01 }, "slow": { "maxFeePerGas": "8300000", "maxPriorityFeePerGas": "2000000", "max_fee_gwei": 0.0083, "max_priority_gwei": 0.002 }, "standard": { "maxFeePerGas": "10300000", "maxPriorityFeePerGas": "4000000", "max_fee_gwei": 0.0103, "max_priority_gwei": 0.004 } } }, "type": "json" }