Understanding blockchain RPCs from scratch

📰 Dev.to · Victor Eduardo Oliveira

Learn the basics of blockchain RPCs and how to build a tool to display real-time transaction fees

intermediate Published 28 Mar 2026
Action Steps
  1. Build a simple blockchain RPC client using a library like Web3.js or Ethers.js to interact with a blockchain node
  2. Run a local blockchain node using a tool like Ganache or Hardhat to test RPC requests
  3. Configure a blockchain RPC provider like Infura or Alchemy to connect to a mainnet or testnet node
  4. Test RPC requests using a tool like Postman or cURL to verify the functionality of the client
  5. Apply the knowledge to build a tool like gasfee.oeduardoal.dev to display real-time transaction fees
Who Needs to Know This

Developers and blockchain enthusiasts who want to understand how to interact with blockchain nodes and build applications on top of them will benefit from this knowledge

Key Insight

💡 Blockchain RPCs allow developers to interact with blockchain nodes and build applications on top of them

Share This
🚀 Learn blockchain RPCs from scratch and build a tool to display real-time transaction fees! 💡

Key Takeaways

Learn the basics of blockchain RPCs and how to build a tool to display real-time transaction fees

Full Article

A few days ago I deployed gasfee.oeduardoal.dev, a small tool that shows real-time transaction fees...
Read full article → ← Back to Reads