सर्गेन उयसल
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 Liquidation Tracker
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.
एआई संचालित डेफी यील्ड ऑप्टिमाइज़र
यह ऐप आपको सिखाता है कि एयरोड्रोम स्वैप एपीआई को एआई मॉडल के साथ कैसे एकीकृत किया जाए ताकि एयरोड्रोम के लिए एक वैयक्तिकृत डीएफआई यील्ड ऑप्टिमाइज़र और एनालिटिक्स डैशबोर्ड बनाया जा सके।
एएमएल और सीएफटी के अनुरूप डीऐप
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.
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.
Ethereum Transaction Report Application
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
ईवीएम एमसीपी सर्वर
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.