Sergen Uysal
All authorsSergen is a Senior Technical Writer at Quicknode, where he covers blockchain developer tools, APIs, and data infrastructure across multiple networks, helping developers go from zero to production with hands-on guides and sample apps.
Recent guides
Why eth_signTransaction fails on hosted nodes, and how to sign transactions locally with Viem or ethers.js and broadcast with eth_sendRawTransaction.
Deploy a Hyperliquid Mainnet non-validating node with Docker Compose and Quicknode Peering. Verify full block and raw mempool output, then set retention.
Use the Quicknode CLI to run RPC calls with account-based access or supported stablecoin payments, verify endpoints, automate preflights, and give agents scoped access.
Learn Hyperliquid L1, L2, L3, and L4 order book data with Quicknode gRPC examples, including aggregated depth, individual orders, and wallet attribution.
Crea un flujo de trabajo de monitorización Robinhood con Quicknode Streams detectar en tiempo real las transferencias de tokens de acciones y la actividad de intercambio en Uniswap.
Aprende a consultar los datos de los tokens bursátiles (TSLA, AAPL, NVDA, AMZN) en Robinhood mediante Quicknode y viem: metadatos de los tokens, oferta total, saldos e historial de transferencias.
Learn how to stream live stop-loss and take-profit trigger orders on Hyperliquid using Quicknode's gRPC API. Monitor resting TP/SL orders per block in TypeScript.
Discover, fund, trade, and stream Hyperliquid HIP-4 binary outcome markets using Quicknode's zero-custody REST builder API for Hyperliquid.
Build a terminal-based Sui portfolio tracker that fetches balances and transactions with GraphQL and streams live checkpoints via gRPC using Quicknode.
Recent sample apps
Rastreador de liquidaciones de Aave V3
Monitor and analyze liquidation events on the Aave V3 protocol in real-time. This project demonstrates the power of serverless blockchain data streaming using Quicknode's Streams.
Optimizador de rendimiento DeFi basado en IA
Esta aplicación te enseña a integrar la API de Aerodrome Swap con un modelo de IA para crear un optimizador de rendimiento DeFi personalizado y un panel de análisis para Aerodrome.
dApp que cumple con la normativa sobre la lucha contra el blanqueo de capitales y la financiación del terrorismo
Esta dApp, que cumple con la normativa contra el blanqueo de capitales y la financiación del terrorismo (AML y CFT), permite realizar staking de ETH de forma segura gracias a sus funciones de cumplimiento normativo integradas. Desarrollada sobre Base compatible con cualquier red Ethereum, utiliza Chainlink Functions y la API de evaluación de riesgos Quicknode para garantizar que solo las carteras de bajo riesgo puedan participar en el pool de staking.
Bitcoin Transaction Report Application
The Bitcoin Transaction Report app uses Quicknode's Blockbook API to query the Bitcoin blockchain, filter transaction data, calculate key metrics, and display the results.
Aplicación de informes de Ethereum
The Ethereum Transaction Report app fetches and analyzes Ethereum transactions for a given address using Quicknode's Blockbook API, providing detailed reports within a specified date range
Servidor EVM MCP
EVM MCP Server connects AI assistants like Claude or Cursor to blockchain data across Ethereum and other EVM-compatible chains. This MCP server tool lets Claude check wallet balances, analyze contracts, and monitor gas prices through natural conversation, making crypto data accessible to AI agents.