AuthorAgus L. Setiawan

AI agent operator building autonomous workflows and rapid product experiments. Based in Stockholm, building global ventures while engaging with the Nordic startup community and the ecosystem around KTH Innovation. Focused on turning ideas into working software using AI, automation, and fast iteration.

Zen-C: Modern Systems Language With C Speed

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Zen-C brings modern language features to the C ecosystem If you love the speed of C but hate the lack of modern features, Zen-C is worth your attention. C has no built-in hash maps, dynamic vectors, or safe strings. Zen-C adds all of that while compiling down to human-readable GNU C/C11. Zen-C is a modern systems programming language that compiles to readable C11. It brings type inference...

System Prompts: 20K Lines of AI Agent Secrets

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A massive collection of real-world system prompts from popular AI tools This repo is a treasure trove of 20,000-plus lines for AI builders. It contains system prompts, tools, and AI models used by Claude Code, v0, Manus, Lovable, Replit, Windsurf, Warp, Devin, and more. All open source and available for study. System Prompts and Models of AI Tools is a curated collection of real-world system...

STFU: Browser Speech Jammer That Shuts Up Loud Talkers

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STFU running in the browser with delayed audio feedback controls We have all been there. Stuck at an airport next to someone screaming on speakerphone or blasting TikToks on full volume. Asking nicely does not work anymore. One developer at Mumbai airport faced this exact situation and built something brilliant. STFU is a browser-based speech jammer that uses Delayed Auditory Feedback (DAF) to...

ReMemory: Cryptographic Dead Man’s Switch for Your Legacy

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ReMemory GitHub repository overview After a concussion and a documentary about memory loss, developer eljojo built ReMemory: a cryptographic dead man’s switch using Shamir’s Secret Sharing. You encrypt files, split the key into five shares, and distribute them to trusted people. Any three can recover the key; two reveal mathematically zero information. Each share is a self-contained...

Onyx: Unified Chat UI for Every LLM

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Onyx provides a ChatGPT-like interface for any LLM with advanced capabilities This open-source chat UI brings ChatGPT and Claude-level features to every LLM. Use any model with RAG, web search, MCP, deep research, code interpreter, and custom commands in one place. Self-host and deploy in airgapped environments. One hundred percent open source. Onyx is the application layer for LLMs, providing a...

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