Field notes from the node room.
Guides and reference articles from the team running the nodes: JSON-RPC methods, WebSocket streams, failover patterns and cost optimization across 24 chains. 57 posts and counting.
Decentralized RPC vs Dedicated RPC: Which to Choose
Decentralized RPC networks vs dedicated providers: latency consistency, accountability, cost. An operator's honest guide to choosing for production.
Jul 6, 2026 · 12 min readRPC Rate Limits Explained (and How to Design Around Them)
What RPC rate limits are, why you hit 429 errors, plus how to design around them: batching, caching, quota models.
Jul 6, 2026 · 9 min readRPCHow BoltRPC Request Units Work: Weights & Costs
How BoltRPC calculates RPC costs: fixed method weights, full RU table, worked examples per plan, tips to reduce usage. Transparent pricing, no surprises.
Apr 14, 2026 · 12 min readrpcLoad Balancing for Blockchain RPC: Strategies & Failover (2026)
How to implement load balancing for blockchain RPC: round-robin, latency-based and method-based routing, failover, provider vs app-level strategies.
Apr 14, 2026 · 7 min readBNB ChainBNB Chain RPC: Endpoints, Setup & Rate Limits (2026)
Working BNB Chain RPC endpoints with ethers.js and Web3.py setup, rate limits, PoSA quirks, and how to get a dedicated BSC endpoint with a free 2-week trial.
Apr 13, 2026 · 8 min readEthereumEthereum Beacon Chain API: Endpoints + Examples (2026)
Query the Beacon Chain REST API: validator status, finality checkpoints, sync committees. Copy-paste curl, JavaScript and Python examples that work in 2026.
Apr 13, 2026 · 7 min readPolygonPolygon Amoy RPC: Endpoint, Chain ID 80002 & Faucets
Polygon Amoy testnet RPC endpoint, chain ID 80002, MetaMask setup, working faucets, plus ethers.js and Web3.py examples to deploy your first contract today.
Apr 13, 2026 · 5 min readRPCCompute Units vs Request Units: RPC Pricing Explained
Why 1M requests can cost 3x more on compute-unit pricing: method weights, DeFi workload math, and how fixed request units keep costs predictable.
Apr 8, 2026 · 7 min readDeFiHow to Build a DeFi Price Feed Using RPC: eth_call Patterns (2026)
Read real-time token prices from Uniswap, Chainlink and Curve directly via RPC using eth_call. Includes caching strategy, multi-source aggregation and production patterns.
Apr 8, 2026 · 7 min readERC-20How to Check ERC-20 Balances & Token Data via RPC (2026)
How to check ERC-20 token balances, allowances, transfer history, approvals directly via RPC using ethers.js. Covers Multicall3 batching, event indexing, production patterns.
Apr 8, 2026 · 6 min readeth_getLogsProduction eth_getLogs Pipeline: Index Events at Scale
Build a production-grade eth_getLogs pipeline: chunking, deduplication, reorg handling, retry logic, and storage patterns for indexing events at scale.
Apr 8, 2026 · 7 min readviemviem Custom RPC: Transports, Fallbacks & wagmi Setup
Point viem at any custom RPC in three lines: http and webSocket transports, fallback chains, wagmi config and multi-chain clients, with copy-paste code.
Apr 8, 2026 · 5 min readMEVMEV Bots and RPC: Infrastructure Requirements for Searchers (2026)
RPC infrastructure MEV searchers need: latency, mempool access, Flashbots endpoints, WebSocket patterns, and provider selection criteria.
Apr 8, 2026 · 6 min readSmart ContractsHow to Monitor Smart Contract Events in Production
Build a production-grade smart contract event monitor using ethers.js WebSocket subscriptions. Covers reconnection logic, missed event recovery, multi-contract monitoring and alerting.
Apr 8, 2026 · 6 min readNFTHow to Read NFT Data from the Blockchain via RPC (2026)
Read NFT ownership, metadata, transfer history directly via RPC using ethers.js. Covers ERC-721 and ERC-1155 patterns, tokenURI, batch ownership checks, event indexing.
Apr 8, 2026 · 6 min readRPCRPC API Key Security: Best Practices for Production
How to protect your blockchain RPC API keys in production. Covers environment variables, backend proxies, IP whitelisting, key rotation and what happens when a key is compromised.
Apr 8, 2026 · 7 min readThe GraphThe Graph vs Direct RPC: When to Use Each for Blockchain Data
The Graph and direct RPC endpoints solve different problems. When to use each, when to combine them, how to decide from your app's data requirements.
Apr 8, 2026 · 7 min readweb3.jsweb3.js vs ethers.js: Which Library Should You Use in 2026?
Compare web3.js and ethers.js for Ethereum development. Covers bundle size, API design, TypeScript support, ethers.js v6 changes plus which to choose for your project.
Apr 8, 2026 · 6 min readEthereumEthereum WebSocket Events with ethers.js v6 (2026)
Real-time Ethereum event listening with ethers.js v6 and WebSocket. Covers contract events, new block subscriptions, log filters, reconnection handling and production patterns.
Mar 30, 2026 · 7 min readRPCHow to Choose a Blockchain RPC Provider (2026): 7 Factors
7 factors that separate reliable RPC providers from outages: pricing, latency, chain coverage, support. Includes an evaluation checklist.
Mar 30, 2026 · 7 min readRPCMulti-Chain RPC: Connect Your dApp to Every Chain (2026)
Building on more than one chain? How to manage multi-chain RPC endpoints with one API key, avoid common pitfalls, keep your infrastructure simple as you scale.
Mar 30, 2026 · 6 min readDeFiOptimizing RPC Calls for DeFi: Multicall, Caching and Batch Strategies
How to dramatically reduce RPC call volume in DeFi applications using Multicall3, response caching, batch requests and WebSocket subscriptions instead of polling.
Mar 30, 2026 · 9 min readRPCRPC Failover: How to Build Reliable Blockchain Infrastructure
How to implement RPC failover for your dApp using ethers.js FallbackProvider, health checks, circuit breakers and multi-provider strategies. Prevent downtime before it happens.
Mar 30, 2026 · 7 min readEthereumRun Your Own Ethereum Node vs RPC Provider (2026)
Real cost breakdown: running your own Ethereum node vs using an RPC provider. Hardware, maintenance, syncing time, and when each makes sense. Updated 2026.
Mar 30, 2026 · 8 min readRPCWebSocket vs HTTP for Blockchain RPC: When to Use Each (2026)
WebSocket or HTTP for your RPC calls? Learn when to use each for DeFi, trading bots, wallet apps, with real code examples. Blockchain-first guide.
Mar 30, 2026 · 7 min readgRPCgRPC vs JSON-RPC: The Real Differences for Web3 Devs
gRPC vs JSON-RPC compared: how each protocol works, real performance differences, and why every blockchain node speaks JSON-RPC while gRPC rules microservices.
Mar 22, 2026 · 8 min readRPCRPC vs REST: The Complete Comparison (Plus Why Blockchain Uses RPC)
RPC vs REST explained for developers. How each works, when to use each, side-by-side code examples plus why every blockchain on earth runs on RPC, not REST.
Mar 22, 2026 · 8 min readRPCHow to Improve RPC Reliability for Web3 dApps (2026 Production Guide)
Production framework for RPC reliability in Web3 dApps: multi-provider failover, retry logic, monitoring, and the latency thresholds that matter.
May 18, 2026 · 13 min readRPCShared vs Dedicated RPC Nodes: When to Upgrade (2026 Decision Guide)
When to upgrade from shared to dedicated RPC nodes: a decision framework with cost math, latency thresholds, real triggers for production teams.
May 18, 2026 · 11 min readEnjinEnjin RPC Guide: Matrix & Relay Chain (2026)
Enjin RPC guide: Matrix and Relay Chain endpoints, Polkadot.js, Substrate methods, NFT queries, gaming patterns, and production issues.
Apr 15, 2026 · 11 min readEthereumEthereum Hoodi Beacon Chain API Guide (2026)
Connect to the Ethereum Hoodi Beacon Chain REST API: validator lifecycle testing, finality checkpoints, staking workflows, curl and JavaScript examples.
Apr 15, 2026 · 6 min readEthereumEthereum Sepolia Beacon Chain API Guide (2026)
Connect to the Ethereum Sepolia Beacon Chain REST API. Covers testnet withdrawal testing, validator queries, finality checkpoints, curl and JavaScript examples.
Apr 15, 2026 · 5 min readEthereumEthereum Sepolia Testnet RPC Guide: Endpoints & Setup (2026)
Connect to Ethereum Sepolia with ethers.js, viem, Web3.py, and curl. Chain ID, endpoints, contract deployment, CI/CD, and common issues.
Apr 15, 2026 · 5 min readApeChainApeChain RPC Guide: Endpoints, Providers & Methods (2026)
Complete ApeChain RPC guide covering public endpoints, ethers.js, Web3.py, curl examples, AnyTrust architecture, NFT mint traffic, production patterns.
Apr 14, 2026 · 8 min readArbitrumArbitrum RPC Guide: Endpoints, Providers & Setup (2026)
Arbitrum RPC guide: HTTP vs WebSocket, Arbitrum-specific methods, ethers.js setup, common issues, how to choose a reliable provider.
Apr 14, 2026 · 10 min readpolygonPolygon RPC Guide: Endpoints, Providers & Setup (2026)
2026 Polygon RPC guide: connect with ethers.js and Web3.py, key JSON-RPC methods, common issues, and how to choose a reliable provider.
Apr 14, 2026 · 7 min readSolanaSolana RPC Guide: Connect & Build (2026)
2026 Solana RPC guide: connect with @solana/web3.js, core methods, commitment levels, and patterns for reliable production apps.
Apr 14, 2026 · 11 min readSonicSonic RPC Guide: Endpoints, Providers & Methods (2026)
Complete Sonic RPC guide covering public endpoints, ethers.js, Web3.py, curl examples, fast-block polling strategy, WebSocket subscriptions, production issues.
Apr 14, 2026 · 9 min readsmart contractsWhat is a Smart Contract? A Developer's Guide (2026)
Smart contracts for developers in 2026: how they work, how you write them, interact via RPC, and their real production limitations.
Apr 14, 2026 · 8 min readXLayerX Layer RPC Guide: Endpoints & Methods (2026)
Complete X Layer RPC guide covering public endpoints, ethers.js, Web3.py, curl examples, OKX zkEVM architecture, ZK proof finality, production patterns.
Apr 14, 2026 · 8 min readAvalancheAvalanche RPC Guide: C-Chain Endpoints & Providers (2026)
Avalanche RPC guide: C-Chain vs X-Chain vs P-Chain, key JSON-RPC methods, ethers.js and Web3.py setup, Snowman consensus, provider selection.
Apr 13, 2026 · 7 min readBaseBase RPC Guide: Mainnet Endpoints, Connect & Build (2026)
How to connect to a Base mainnet RPC endpoint, use OP Stack methods, handle production issues, choose the right provider for your dApp or backend.
Apr 13, 2026 · 8 min readEthereumEthereum Hoodi Testnet RPC Guide (2026)
Connect to Ethereum Hoodi testnet with ethers.js, Web3.py, curl. Covers RPC methods, faucet links, smart contract testing workflow, common issues.
Apr 13, 2026 · 6 min readethereumEthereum RPC Guide: Connect & Build (2026)
Ethereum RPC guide for developers: connect with ethers.js, Web3.py plus curl, key JSON-RPC methods, EIP-1559 fees, finality tags, production fixes.
Apr 13, 2026 · 8 min readLineaLinea RPC Guide: Endpoints, Providers & Setup (2026)
Technical guide to Linea RPC endpoints: ZK-EVM architecture, key JSON-RPC methods, ethers.js and Web3.py setup, provider selection for production.
Apr 13, 2026 · 8 min readOptimismOptimism RPC Guide: Endpoints, Custom RPC & Providers (2026)
Optimism RPC guide: custom endpoints, provider comparison, OP Stack methods, HTTP vs WebSocket, ethers.js setup, and production issues.
Apr 13, 2026 · 8 min readScrollScroll RPC Guide: Endpoints, Providers & Dedicated Nodes (2026)
Scroll RPC guide: ethers.js, Web3.py, curl. ZK-EVM architecture, finality stages, L1 data fees, provider selection, and dedicated node options.
Apr 13, 2026 · 7 min readStarknetStarknet RPC Guide: Connect & Build (2026)
Starknet RPC guide for developers: connect with starknet.js, use core starknet_ methods, handle native account abstraction, avoid common migration mistakes.
Apr 13, 2026 · 7 min readzkSynczkSync Era RPC Guide: Endpoints, Providers & Setup (2026)
zkSync Era RPC guide: zks_ methods, ethers.js and Web3.py setup, account abstraction, Paymaster patterns, provider selection for production.
Apr 13, 2026 · 9 min readDeFiBuilding a Liquidation Bot: RPC Requirements and Infrastructure Guide
What RPC infrastructure a production liquidation bot needs — latency, mempool monitoring, health factor scanning, Flashbots submission and failover patterns for DeFi protocols.
Apr 8, 2026 · 6 min readweb3.pyHow to Connect to Ethereum with web3.py: RPC Configuration Guide
Connect web3.py to a custom RPC endpoint. Covers HTTP and WebSocket providers, contract reads, event filtering, async support, and production configuration patterns.
Apr 8, 2026 · 5 min readEthereumEthereum JSON-RPC Methods: A Practical Guide (2026)
The Ethereum JSON-RPC API methods you will actually use. Covers eth_call, eth_getLogs, eth_getBalance, eth_sendRawTransaction and more with real code examples.
Mar 30, 2026 · 8 min readEthereumHow to Connect to Ethereum with ethers.js v6: Complete Guide
Step-by-step guide to connecting to Ethereum using ethers.js v6. Covers HTTP provider, WebSocket provider, signing transactions, reading contracts and error handling.
Mar 30, 2026 · 6 min readRPCHow to Handle RPC Errors in Web3: A Production Guide
Every RPC error your dApp will encounter and exactly how to handle each one. Covers ethers.js v6 error types, retry logic, transaction failure debugging and production patterns.
Mar 30, 2026 · 8 min readBlockchainWhat is a Blockchain Node? The Developer's Guide
What is a blockchain node? Developer guide to node types, RPC connections, and when to self-host vs use a managed RPC provider.
Mar 30, 2026 · 8 min readJSON-RPCWhat is JSON-RPC? A Developer's Guide (2026)
JSON-RPC explained for blockchain developers. How it works, real code examples, common Ethereum methods, error handling plus why every Web3 app depends on it.
Mar 22, 2026 · 9 min readRPCWhat is Remote Procedure Call (RPC)? Complete Guide
Remote Procedure Call (RPC) explained: how it works, real examples, RPC vs REST, and why blockchain developers need reliable RPC infrastructure. Read the guide.
Mar 19, 2026 · 12 min read