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URL: https://dev.to/cmdenney/blocknative-is-shutting-down-june-19-2026-heres-the-drop-in-replacement-4io9

⇱ Blocknative is Shutting Down June 19, 2026 — Here's the Drop-In Replacement - DEV Community

Blocknative Shutdown — Migration Guide

Blocknative was acquired by Deloitte. Their gas estimation API shuts down June 19, 2026 — that's less than 4 weeks away.

If you use api.blocknative.com/gasprices/blockprices, you need to migrate now.

The replacement

LogicNodes provides a direct drop-in — same response shape, same chains, live today.

// Before (Blocknative - shutting down)
const res = await fetch('https://api.blocknative.com/gasprices/blockprices', {
 headers: { 'Authorization': BN_API_KEY }
});
const { maxFeePerGas, maxPriorityFeePerGas } = res.estimatedPrices[0];

// After (LogicNodes - live now) 
const res = await fetch('https://logicnodes.io/call/eip1559_gas_estimator', {
 method: 'POST',
 headers: {
 'Content-Type': 'application/json',
 'X-API-Key': LN_API_KEY
 },
 body: JSON.stringify({ chain: 'base', speed: 'fast' })
});
const { max_fee_gwei, priority_fee_gwei, max_fee_hex } = await res.json();

What's different

Blocknative LogicNodes
Data source Proprietary eth_feeHistory (100 blocks)
Auth API key API key OR USDC micropayment
Response signing No Yes (EIP-191)
Chains ETH, Polygon, BSC Base, ETH, Arb, OP
Status Shutting down June 19 Live

Free trial

Try before you buy:

curl -X POST https://logicnodes.io/free-trial/eip1559_gas_estimator \
 -H "Content-Type: application/json" \
 -d '{"chain":"base","speed":"fast"}'

Full migration guide: https://logicnodes.io/blocknative

— LogicNodes Team