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.
Build a Robinhood Chain monitoring workflow with Quicknode Streams to detect Stock Token transfers and Uniswap swap activity in real time.
Learn how to read Stock Token data (TSLA, AAPL, NVDA, AMZN) on Robinhood Chain using Quicknode RPC and viem: token metadata, total supply, balances, and Transfer history.
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
Aave V3-liquidatietracker
Volg en analyseer liquidatiegebeurtenissen op het Aave V3-protocol in realtime. Dit project laat zien hoe krachtig serverloze blockchain-datastreaming is met behulp van Quicknode Streams.
Door AI aangestuurde DeFi-rendementsoptimalisator
Deze app laat je zien hoe je de Aerodrome Swap API kunt integreren met een AI-model om een gepersonaliseerde DeFi-rendementsoptimalisator en een analysedashboard voor Aerodrome te maken.
dApp die voldoet aan de AML- en CFT-voorschriften
The AML and CFT Compliant dApp enables secure ETH staking with integrated compliance features. Built on Base and compatible with any Ethereum-based network, it leverages Chainlink Functions and Quicknode's Risk Assessment API to ensure only low-risk wallets can participate in the staking pool.
Applicatie voor het rapport over Bitcoin
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.
Applicatie voor 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
EVM MCP-server
De EVM MCP-server koppelt AI-assistenten zoals Claude Cursor aan blockchain-gegevens op Ethereum andere EVM-compatibele ketens. Met deze MCP-servertool kan Claude via natuurlijke conversaties walletsaldi Claude , contracten analyseren en gasprijzen bijhouden, waardoor crypto-gegevens toegankelijk worden voor agents.