IAMUVIN

Blog

Blog

Technical writing on Web3, AI, and building things. Written by Uvin Vindula.

130 articles

AI & Machine Learning11 min
IAMUVIN

How I Built the EuroParts Lanka AI Part Finder with Claude

A build log of how I integrated Claude's API into europartslanka.lk to let customers describe car problems in plain English and get back exact OEM part numbers, compatible models, and pricing — serving 966 customers and 1,444 parts delivered.

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Uvin Vindula·March 11, 2024
Web3 Development9 min
IAMUVIN

Deploying Smart Contracts on Arbitrum: Step-by-Step

A practical step-by-step guide to deploying Solidity smart contracts on Arbitrum using Foundry. Covers testnet and mainnet deployment, contract verification, gas cost comparison with Ethereum, and key differences you need to know before going live.

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Uvin Vindula·March 11, 2024
AI & Machine Learning11 min
IAMUVIN

Claude API vs OpenAI API: An Honest Comparison for Developers

A developer-first comparison of Claude API and OpenAI API covering pricing, response quality, tool use, streaming, and developer experience — based on months of production usage building real products.

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Uvin Vindula·March 4, 2024
Web3 Development13 min
IAMUVIN

Building a DAO Governance System with Solidity and React

A complete guide to building a production DAO governance system — from OpenZeppelin Governor contracts and timelock execution to a React frontend with wagmi. Based on real governance contracts I have deployed for clients.

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Uvin Vindula·March 4, 2024
AI & Machine Learning13 min
IAMUVIN

Multi-Agent AI Systems: Architecture and Implementation

A practical guide to multi-agent AI system architecture — orchestrator, pipeline, and swarm patterns with TypeScript implementation. Based on real experience building IAMUVIN OS, a multi-business command center powered by Claude AI agents.

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Uvin Vindula·February 19, 2024
Web3 Development10 min
IAMUVIN

Foundry vs Hardhat in 2026: Which Framework Should You Use

A hands-on comparison of Foundry and Hardhat for Solidity development in 2026. Speed benchmarks, testing approaches, fuzz testing, and when to pick each framework.

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Uvin Vindula·February 19, 2024
AI & Machine Learning13 min
IAMUVIN

RAG Systems Explained: Build Your First Retrieval-Augmented Generation App

A production-focused guide to building retrieval-augmented generation systems with TypeScript, Supabase pgvector, and the Claude API. Real code, real architecture, zero hand-waving.

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Uvin Vindula·February 12, 2024
Web3 Development13 min
IAMUVIN

Smart Contract Gas Optimization: 30 Techniques That Work

30 proven gas optimization techniques for Solidity smart contracts with before/after code examples and real gas savings numbers. From storage packing to assembly tricks, based on production deployments on Ethereum and L2s.

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Uvin Vindula·February 12, 2024
AI & Machine Learning14 min
IAMUVIN

Building AI Products with Claude API: The Complete 2026 Guide

A practical guide to building AI products with the Claude API using TypeScript and Next.js. Covers setup, streaming, tool use, error handling, and production deployment. Based on real implementations including the EuroParts Lanka AI Part Finder, where customers describe car problems in plain English and Claude identifies the exact OEM part. Includes cost optimization strategies that reduced API spend by 60% in production.

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Uvin Vindula·February 5, 2024
Web3 Development11 min
IAMUVIN

Building Cross-Chain Applications with Layer 2 Networks

A practical guide to building cross-chain applications across Arbitrum, Optimism, Base, and zkSync — covering architecture patterns, bridge integration, multi-chain contract deployment, and frontend orchestration with wagmi. Based on real production deployments.

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Uvin Vindula·February 5, 2024
Web3 Development10 min
IAMUVIN

ERC-20 Token Development: From Concept to Mainnet

A practical guide to building, testing, and deploying ERC-20 tokens using Solidity, OpenZeppelin, and Foundry. Real contract code, real deployment steps, real mistakes to avoid.

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Uvin Vindula·January 22, 2024
Web3 Development14 min
IAMUVIN

Solidity Smart Contract Development: The Complete 2026 Guide

Solidity smart contract development in 2026 requires Solidity 0.8.24+, Foundry for testing, and OpenZeppelin for battle-tested standards. This guide covers the full workflow I use in production: project setup with forge init, writing secure contracts using Checks-Effects-Interactions, fuzz testing with Foundry, and deploying to Ethereum L2s like Arbitrum and Base. You will learn storage slot packing for gas optimization, the reentrancy guard pattern, access control with role-based permissions, and how to structure upgradeable contracts using the UUPS proxy pattern. Every pattern here is battle-tested across mainnet deployments.

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Uvin Vindula·January 15, 2024