---
title: "Ethereum gas: next-block base fee + priority-fee percentiles in gwei"
method: GET
path: "/v1/eth/gas"
---

# Ethereum gas: next-block base fee + priority-fee percentiles in gwei

`GET /v1/eth/gas`

## Request

- Base URL: `https://data.greeneris.io` (the document declares no server; this is the origin it was published from)
- URL: `https://data.greeneris.io/v1/eth/gas`
- Auth: none declared

Live Ethereum mainnet gas pricing from PublicNode RPC: next-block base fee, 25/50/75th-percentile priority tips over the last 5 blocks (slow/std/fast), and a ready-to-sign recommendation (max_fee = 2*base + tip). Query: ?speed=slow|std|fast (default std). All values are decimal gwei, no hex parsing needed. 30s cache.

## Query parameters

- `speed` 'slow' | 'std' | 'fast'

## Response `200`

Successful response

- unknown

---

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