Technical explainers, troubleshooting playbooks, and infrastructure guidance shaped by the questions developers search for.
A developer's guide to the ERC-4337 bundler JSON-RPC surface: building, estimating, submitting, and polling UserOperations without an SDK.
Read articleTreat eth_estimateGas as a simulation measurement, not a value to send, and derive a safe gas limit with a buffer, a cap, and an affordability check.
Read articleA mechanism deep-dive and troubleshooting playbook for paging Hyperliquid's candleSnapshot into a continuous, deduplicated OHLCV archive that reconciles with the live candle WebSocket.
Read articleA production playbook for paging the Parity-style trace namespace on BNB Smart Chain, covering trace_filter, trace_block, capability probing, cursor persistence, and reorg repair.
Read articleMonad reserves a sender's gas limit before execution, so eth_getBalance can exceed what an account can actually spend; this guide shows how to read the reserve surface and compute spendable MON.
Read articleBuild a multi-provider RPC dispatch layer that distinguishes transport, protocol, semantic, and rate-limit failures, and never serves a lower head than it already served.
Read articleBuild a closed-loop EIP-1559 fee estimator that uses eth_feeHistory reward percentiles and observed inclusion latency to adjust the priority fee percentile automatically.
Read articleDerive a per-transaction compute unit price from getRecentPrioritizationFees, attach ComputeBudget instructions, and verify the choice by landing rate.
Read articleTurn a one-off getProgramAccounts scan into a continuously correct, resumable index with slot cursors, gap-fill, and deletion reconciliation.
Read articleA derivation-aware playbook for keeping a Base indexer correct across unsafe-head replacements, L1 origin windows, and rollback proof.
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