{"slug": "i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless", "title": "I built an AI observability platform with $0 – zero dependencies, zero ops, stateless", "summary": "A developer built Cognilumin, a stateless AI observability platform, on $0/month infrastructure using free tiers of Gemini, Groq, and OpenRouter, with zero dependencies and no frameworks. The platform offers three tools: Illuminator for structured explanations, Topology Visualizer for animated system maps, and Execution Logs for tracing AI agent reasoning steps.", "body_md": "I’ve been building Cognilumin on and off for the past few months, mostly late nights and weekends. It’s a stateless AI observability platform—three tools that help explain, visualize, and debug AI behavior. The catch? It runs on $0/month infrastructure with no frameworks and no paid APIs.\n\nHere’s what it does:\n\n· **Illuminator** – paste any AI‑related question and get back a structured, master‑teacher explanation with analogies, mental models, and a key takeaway. The backend detects the intent (evaluation, debugging, observability, or general teaching) and selects a specialist prompt.\n\n· **Topology Visualizer** – describe a system scenario in plain English and a live particle‑based flow‑field engine renders an animated state map. Think lightweight Galileo Smartscape.\n\n· **Execution Logs **– give an AI agent a task and trace every reasoning step with hex‑formatted indices, action tags, and latency profiling. Browser‑based, zero‑setup LLM debugging.\n\n**How I kept the stack at $0**\n\n· **Hosting**: shared hosting (moved from InfinityFree to Hostinger for cron jobs)\n\n· **AI providers**: Gemini, Groq, and OpenRouter—all free tiers, with a PHP proxy that rotates keys and handles 429s automatically\n\n· **Storage**: none—the platform is completely stateless (no logins, no database, no tracking)\n\n· **Dependencies**: zero—vanilla PHP + vanilla JavaScript, not a single framework\n\n**What I learned along the way\n**\n· **Rate‑limit juggling is a real skill.** Writing the fallback proxy (Gemini → Groq → OpenRouter) took a few hours, and it hasn’t failed once in production.\n\n**What this is (and isn’t)**\n\nThis isn’t a SaaS. It’s a fully functional demo platform that proves AI observability can be done without expensive tooling. If you’re evaluating LLM pipelines, debugging agent behavior, or just want a lightweight way to visualize system states, Cognilumin works right now.\n\n🔗 Live demo: [https://cognilumin.com](https://cognilumin.com)\n\nI’m genuinely looking for feedback—what would you add, what feels clunky, what would make you actually use this regularly? If someone sees a bigger vision for the domain + codebase, I’m open to that conversation too, but honestly I’d just love to hear what the dev community thinks.", "url": "https://wpnews.pro/news/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless", "canonical_source": "https://dev.to/mamman_mohammed_86795ea0e/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless-4e7j", "published_at": "2026-07-29 20:31:35+00:00", "updated_at": "2026-07-29 21:01:44.071793+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-tools", "developer-tools", "ai-infrastructure"], "entities": ["Cognilumin", "Gemini", "Groq", "OpenRouter", "Hostinger"], "alternates": {"html": "https://wpnews.pro/news/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless", "markdown": "https://wpnews.pro/news/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless.md", "text": "https://wpnews.pro/news/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless.txt", "jsonld": "https://wpnews.pro/news/i-built-an-ai-observability-platform-with-0-zero-dependencies-zero-ops-stateless.jsonld"}}