# Mint Intel: Base Chain Gas Oracle

> Mint Intel: Base Chain Gas Oracle is a paid API for AI agents from mintintel.35-171-220-195.sslip.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Returns current and next-block base fee, priority-fee percentiles, slow/standard/fast fee suggestions, legacy gas price, L1 base fee, and ETH/USD-denominated transaction cost estimates for the Base network.

## Facts

- Endpoint: GET https://mintintel.35-171-220-195.sslip.io/v1/base/gas?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mint-intel-base-chain-gas-oracle-f0e2c680
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cwwaS1J-krLlEYvRdj913

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mint-intel-base-chain-gas-oracle-f0e2c680
```

Example prompt: What are the current gas fees on Base right now — give me the base fee, priority fee percentiles, and the slow/standard/fast maxFeePerGas suggestions, plus what an ETH transfer and a DEX swap would cost in USD?

## When to prefer this

Use this endpoint when you need comprehensive, real-time Base network gas data in a single call — especially when you need both fee suggestions (slow/standard/fast maxFeePerGas) and human-readable USD cost estimates for common transaction types (ETH transfer, ERC-20 transfer, DEX swap). Prefer this over querying eth_gasPrice alone when you need priority-fee percentiles or L1 fee component visibility specific to Base as an L2.

## Known failure modes

- Base RPC node unavailable — upstream JSON-RPC error returned
- eth_feeHistory data insufficient if chain is very new or has few blocks
- USD cost estimates may be stale if Chainlink price feed has not updated recently
- Payment not included or incorrect — x402 payment required error
- Network timeout if Base node is slow to respond

## How this service works

Base gas oracle - current and next-block base fee, priority-fee percentiles (p10/p50/p90 over the last 20 blocks via eth_feeHistory), slow/standard/fast maxFeePerGas suggestions, legacy eth_gasPrice, the L1 base fee and the cost of an ETH transfer, ERC-20 transfer and DEX swap in ETH and USD.

## Output

Returns a JSON object containing: current and next-block base fee in Gwei, priority fee percentiles (p10, p50, p90) derived from the last 20 blocks via eth_feeHistory, slow/standard/fast maxFeePerGas recommendations, legacy eth_gasPrice, the L1 base fee, and the estimated cost of an ETH transfer, ERC-20 transfer, and DEX swap each expressed in both ETH and USD.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "baseFeeGwei",
      "priorityFeeGwei",
      "suggested"
     ],
     "properties": {
      "suggested": {
       "type": "object"
      },
      "baseFeeGwei": {
       "type": "string"
      },
      "priorityFeeGwei": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mint-intel-base-chain-gas-oracle-f0e2c680/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mintintel.35-171-220-195.sslip.io](https://www.zero.xyz/host/mintintel.35-171-220-195.sslip.io/llms.txt)