{"slug":"nirholas/lyra-web3-playground","name":"Web3 Playground & Sandbox - Learn, Develop, Test MCP Servers + Toolkit SDK","description":"Free Solidity compiler & Web3 IDE with interactive tutorials. Learn blockchain development, deploy smart contracts to 8+ chains (Ethereum, Polygon, Base, Arbitrum, Solana). Templates for tokens, NFTs, DeFi, DAOs. Monaco Editor, AI assistance, WCAG accessible. Remix alternative. Gas optimization, MetaMask integration, open source. Beginner-friendly. MCP toolkit.","category":"development","tags":[],"official":false,"stars":24,"transport":null,"install":null,"tools":[{"name":"Web Sandbox","description":"Full-featured web IDE with React, Vue, Python, live preview, Vim mode"},{"name":"Solidity IDE","description":"Smart contract IDE with multi-version compiler (0.6.x - 0.8.24)"},{"name":"Full-Stack Playground","description":"Build complete dApps with contract + frontend + live preview"},{"name":"Interactive Sandbox","description":"IDE with AI assistant, templates, and testnet deployment"},{"name":"Innovation Lab","description":"Experimental AI features including AI Code Whisperer, Contract Time Machine, Security Testing Lab, Collaborative Arena, Neural Gas Oracle, and Cross-Chain Deployer"},{"name":"Contract Playground","description":"Template-based contract editor"},{"name":"Learning Playground","description":"Interactive tutorials"},{"name":"Markets","description":"Live crypto prices & DeFi data"},{"name":"Explore","description":"Community projects gallery"}],"env_vars":["BACKEND_API"],"auth_type":"none","github":"https://github.com/nirholas/lyra-web3-playground","homepage":"","server_url":"","status":"active","source":"mcpservers.org","updated_at":"Thu May 28"}