Blocknative Gas API Alternative

Blocknative's Gas Platform API shuts down on June 19, 2026 after Deloitte acqui-hired the engineering team and announced it would discontinue Blocknative's infrastructure products. If your dapp, wallet, dashboard, or backend calls api.blocknative.com/gasprices/blockprices today, you have ~3 weeks to migrate.

Gas Fee Predictor is a free, no-key, drop-in alternative for the gas price portion of Blocknative's API. Live Ethereum mainnet gas, L2 gas (Arbitrum, Optimism, Base, Polygon), historical data, and 24h forward predictions — same JSON, no signup, no quota. Below: endpoint mapping, migration code, honest scope.

What happened to Blocknative?

Deloitte acquired the Blocknative team in May 2026 — an acqui-hire focused on the engineering and research staff. The team is moving into Deloitte's enterprise technology and blockchain division to focus on cryptographic systems and AI verification tools. Blocknative's existing infrastructure products (Gas Platform API, Gas Network, transaction APIs) are being wound down as part of the transition. Services continue through June 19, 2026; after that date the APIs will stop responding. Coverage: The Block, Yahoo Finance.

Endpoint mapping

For each Blocknative endpoint you were calling, here's where to point your client instead. All endpoints return JSON; no auth header needed.

Full request/response examples for each endpoint live at the API docs.

Migration in ~5 minutes

Before — Blocknative

// Blocknative (sunsets June 19, 2026)
const res = await fetch(
  'https://api.blocknative.com/gasprices/blockprices?confidenceLevels=99',
  { headers: { Authorization: process.env.BLOCKNATIVE_API_KEY } }
)
const data = await res.json()
const gwei = data.blockPrices[0].estimatedPrices[0].price

After — Gas Fee Predictor

// Gas Fee Predictor — no API key, no signup
const res = await fetch('https://api.gasfeepredictor.com/api/gas-predictions')
const data = await res.json()
const gwei = data.current.high  // fastest-inclusion tier ≈ BN 99% confidence
// data.current.low / .average / .high — economy / typical / fastest tiers
// data.predictions[] — 24h hourly forecast, each with a confidence score
// data.nextBestTime — cheapest predicted window { timestamp, gasPrices }
// data.decision.recommendation — "WAIT" | "SEND_NOW" (uppercase)

curl one-liner

curl -s https://api.gasfeepredictor.com/api/gas-predictions | jq '.current'

Python

import requests
data = requests.get('https://api.gasfeepredictor.com/api/gas-predictions').json()
print(data['current']['high'])  # gwei

Multi-chain (L2 gas) — bonus

// Blocknative was L1-only. We cover L2s.
const { networks } = await (await fetch('https://api.gasfeepredictor.com/api/l2-gas')).json()
// estimatedWalletFeeUsd can be null on some chains; fall back to execution cost
const fee = (n) => n.estimatedWalletFeeUsd ?? n.executionGasCostUsd
const cheapest = [...networks].sort((a, b) => fee(a) - fee(b))[0]
console.log('Cheapest L2 right now:', cheapest.name)

Migration FAQ