Give your AI an operating system. Persistent context that compounds session over session.
$ curl -sSL contextium.ai/install | bash
$ cd contextium && claude
# "let's onboard" A genuine multiplier across everything you do. But every session starts from zero. You re-explain who you are, what you're working on, what you already decided. The gap between AI's promise and your reality never closes.
A flat list of facts in a black box. No structure. No rules. No routing. No compounding. Your AI has the same IQ on day 1,000 as day 1.
A sticky note.
A structured operating system with persistent context, behavioral rules, multi-agent delegation, and session compounding. Every session builds on the last.
An operating system.
Run the installer, start your AI agent, and say "let's onboard."
One command. It sets up your repo with git, configures updates, and gets you ready. No dependencies, no build step.
Say "let's onboard." Your AI asks 4 questions, sets up your profile, picks your agent config. Done in 5 minutes.
Every session builds on the last. Decisions persist. Context accumulates. Knowledge compounds. Day 30 is dramatically more powerful than day 1.
A structured git repo with six layers that your AI navigates automatically.
The brain. Lazy-loads only the files relevant to the current session. No token bloat, no preloading.
Goals, health tracking, news digest, daily briefing, error remediation, shared utilities. Add your own.
Google Workspace, Todoist, Home Assistant, QuickBooks, Windmill, and 22 more. Configure only what you need.
People cards, health data, goals, finance — domain-organized reference data that grows richer over time.
Behavioral rules, delegation policies, session discipline. Not just documented — actually enforced via hooks.
Every session ends with a structured log. Next session, your AI knows what you decided and why. No repetition.
Contextium is Apache 2.0 licensed. No premium tier. No hosted service. No data collection. Just a git repo of markdown files that you own completely. Fork it, modify it, build on it.
Not a prompt library. Not RAG. Not a vector database. An operating system.
Your AI doesn't preload your entire life. It reads a trigger table and loads only what's relevant — mention a person, it loads their card. Start a project, it loads the README. Call an API, it loads the integration docs.
Rules aren't suggestions — they're enforced. Delegation thresholds, context efficiency, session discipline, credential handling. Hooks catch drift before it happens.
Route research to Gemini. Bulk edits to Codex. Strategy stays with Claude. Each agent gets the right task at the right cost. Your primary AI stays focused.
Plain markdown. Git-versioned. No embeddings. No proprietary format. No subscription. Switch AI agents tomorrow and lose nothing. Your data is yours, forever.
This isn't a weekend project. Contextium was refined through months of daily production use before being open-sourced.
Your AI's effectiveness is proportional to its context. Most people treat AI as stateless — prompt, response, forget. Contextium treats context as infrastructure: persistent, structured, version-controlled.
Every journal entry, every project README, every people card makes the next session richer. This is the flywheel. Day 30 is dramatically more powerful than day 1.
No proprietary formats. No vendor lock-in. No subscription. Just markdown files in a git repo. Your data is yours — human-readable, version-controlled, portable.
Install Contextium, say "let's onboard," and give your AI the operating system it's been missing.
Apache 2.0 · Plain markdown · No lock-in