Building developer tools, CLI applications, and systems-oriented software.
I build practical developer tools, CLI applications, and software focused on solving real engineering problems.
My interests span systems programming, blockchain infrastructure, network monitoring, and modern web development. I care about clean architecture, maintainable code, thoughtful APIs, and shipping software that actually works.
Most of my work is open source. I would rather ship a small tool that runs reliably than a large project that exists only as a demonstration.
- chainpulse — Multi-chain EVM gas price tracker CLI with EIP-1559 fee history and percentile priority-fee sampling; works without API keys.
- TokenMaxxing — Repository intelligence and context optimization toolkit in Rust: duplicate detection, context compression, and prompt optimization.
- btc-pulse — Real-time Bitcoin network monitor as a dependency-light CLI and TUI: mempool pulse, fee oracle, whale tracker, and network health.
- chainguard — ChainGuard, an open-source EVM transaction security and risk analysis SDK for wallets, dApps, and custody.
- cross-chain-transaction-simulator — Deterministic, offline-first simulator for visualizing and analyzing cross-chain EVM transaction flows across bridge models.
- website-bug-hunter — Open-source website bug and quality scanner: broken links and images, console errors, redirect anomalies, metadata, and accessibility.
- dontneed-dns — Auditable DNS-over-HTTPS resolver and TLS-splitting proxy for networks where DNS queries or the TLS handshake are blocked.
- DevToolKit — All-in-one developer toolbox built with React and Vite: JSON utilities, generators, converters, and validators.
- smart-to-do — LumaFlow, a React task workspace with local persistence, filtering, global search, and a statistics dashboard.
- CalcSnake — Scientific calculator with memory registers, persistent history, and a hidden Snake game.
- YigitEfe-DEV.github.io — Published build of my personal site, efeyigit.me, served through GitHub Pages.
- YigitEfe-DEV — This profile repository: README, neural network animation, and the generator that produces it.
- merkle-tree-visualizer — Fork of berkturan-coder/merkle-tree-visualizer: builds Merkle trees and generates and verifies proofs.
- skills — Fork of mattpocock/skills: a collection of agent skills for engineering workflows.
- StickPick — Fork of AvishkarPatil/StickPick: converts Telegram stickers for WhatsApp.
- awesome-n8n — Fork of tysoncung/awesome-n8n: community nodes, templates, and hosting guides for n8n automation.
