# Grokzilla Gas Price Feed

> Grokzilla Gas Price Feed is a paid API for AI agents from grokzilla.shop, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).

Returns EIP-1559 base fee and priority fee percentiles (p25/p50/p90) for Base and/or Ethereum via eth_feeHistory, with optional USD cost estimate for an ETH transfer on Base.

## Facts

- Endpoint: POST https://grokzilla.shop/api/skills/gas-price?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grokzilla-gas-price-feed-b0b59b85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e-s8Nzh1lwrRCwHz9Pxdd

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 grokzilla-gas-price-feed-b0b59b85 -d '<json body>'
```

Example prompt: What are the current EIP-1559 base fee and priority fee percentiles (p25, p50, p90) on both Base and Ethereum right now, and what would an ETH transfer cost in USD on Base?

## When to prefer this

Use this endpoint when an agent needs current EIP-1559 gas fee data (base fee + priority fee percentiles) for Base or Ethereum without setting up an RPC node or API key. Ideal for pre-transaction gas estimation, fee budgeting, or deciding between Base and Ethereum based on current gas costs. The 10-second cache makes it suitable for near-real-time decisions. Choose over raw RPC calls when you need a simple pay-per-call interface with no account setup.

## Known failure modes

- Invalid chain value (not 'base' or 'ethereum') returns a validation error
- Empty or missing chains array returns an error
- HTTP 402 returned if payment is not included
- Stale data possible within the 10-second cache window
- Upstream eth_feeHistory RPC failure may result in 503 or error response

## How this service works

EIP-1559 base fee and priority fee percentiles (p25/p50/p90) for Base and/or Ethereum via eth_feeHistory. Cached 10s. Optional eth-transfer USD estimate on Base.

## Output

Returns EIP-1559 base fee and priority fee percentiles at p25, p50, and p90 for the requested chain(s) (Base and/or Ethereum), sourced from eth_feeHistory and cached for up to 10 seconds. For Base, optionally includes a USD cost estimate for a standard ETH transfer. Also echoes back the request_id if provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chains": {
   "type": "array",
   "items": {
    "enum": [
     "base",
     "ethereum"
    ],
    "type": "string"
   },
   "default": [
    "base"
   ],
   "maxItems": 2,
   "minItems": 1,
   "uniqueItems": true
  },
  "request_id": {
   "type": "string",
   "pattern": "^[A-Za-z0-9._:-]+$",
   "maxLength": 64,
   "minLength": 1,
   "description": "Optional idempotency key. Echoed back; a credit-pack redemption with the same request_id and body is charged once."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/grokzilla-gas-price-feed-b0b59b85/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from grokzilla.shop](https://www.zero.xyz/host/grokzilla.shop/llms.txt)