Need a custom tool to monitor wallets, fetch token prices, or automate chain interactions?
I will create:
📡 Wallet watchers using Web3 (ETH, BSC, Polygon)
💹 Price fetchers using Coingecko or DEX APIs
📊 Portfolio tools (Fiat conversion, chart output)
⛓️ On-chain balance fetchers or RPC integrations
Technologies:
Web3j, Retrofit, Java 17, Spring Boot
REST, JSON, H2, Coingecko, Ankr, Infura RPC
✅ Fast delivery, clean architecture, pseudonymous possible.
Price is negotiable and delivery time depends on complexity.
