# VerifyOracle Base Gas Price Feed

> VerifyOracle Base Gas Price Feed is a paid API for AI agents from penger-oracle.run402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-27).

Returns live Base Mainnet (chainId 8453) gas price and EIP-1559 baseFeePerGas data directly from the Base public RPC node.

## Facts

- Endpoint: GET https://penger-oracle.run402.com/api/base-gas?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verifyoracle-base-gas-price-feed-391f9b27
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iPIGCzDLlSDRsCDoqotAJ

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 verifyoracle-base-gas-price-feed-391f9b27
```

Example prompt: What's the current gas price on Base mainnet right now — give me both the raw Wei value and the Gwei equivalent, plus the EIP-1559 base fee?

## When to prefer this

Choose this endpoint when you need real-time, EIP-1559-aware gas price data specifically for Base mainnet (chainId 8453) without running your own RPC node. It is ideal for agents that need to estimate transaction costs, decide whether to submit transactions, or monitor gas conditions on Base L2 — especially in x402-payment-enabled workflows where a pay-per-call model is acceptable.

## Known failure modes

- Base public RPC node is unavailable or rate-limited — may return a server error or stale data
- Network congestion on Base may cause slight latency in block data
- No input validation beyond a GET request — malformed requests return an error
- Returned block number may be slightly behind the chain tip due to RPC propagation delay

## How this service works

Live Base Mainnet (chainId 8453) gas price and EIP-1559 baseFeePerGas directly from Base public RPC.

## Output

A JSON object containing: the data source label ('base-mainnet-rpc'), the chain ID (8453), the network name ('base-mainnet'), the current block number, the current gas price in both Wei and Gwei, and the EIP-1559 baseFeePerGas in both Wei and Gwei.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "base-mainnet-rpc",
  "chainId": 8453,
  "network": "base-mainnet",
  "blockNumber": 25000000,
  "gasPriceWei": "1500000",
  "gasPriceGwei": 0.0015,
  "baseFeePerGasWei": "1200000",
  "baseFeePerGasGwei": 0.0012
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verifyoracle-base-gas-price-feed-391f9b27/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from penger-oracle.run402.com](https://www.zero.xyz/host/penger-oracle.run402.com/llms.txt)