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
