contextium
100% Open Source Apache 2.0

AI that doesn't learn
isn't intelligence.

Give your AI an operating system. Persistent context that compounds session over session.

terminal
$ curl -sSL contextium.ai/install | bash

You can see what AI should be.

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.

Native AI "Memory"

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.

Contextium

A structured operating system with persistent context, behavioral rules, multi-agent delegation, and session compounding. Every session builds on the last.

An operating system.

After 30 days

Your AI actually knows you.

Your goals. Your relationships. Your communication style. Your decision history. Your health data. Your business metrics.

It's not a generic assistant anymore — it's your assistant. The experience deepens every single day.

# Your AI sees this automatically:
knowledge/people/you/goals.md
knowledge/people/you/bio.md
knowledge/health/biomarkers/2026.md
knowledge/people/partner/README.md
journal/2026-03-19.md
# It never has to ask you again.
Claude
Today
Gemini
Tomorrow
Codex
Next year
Your Contextium
Same context. Zero migration.
No lock-in

Your context. Your data. Forever.

Every other AI tool locks your context inside their platform. If they shut down, raise prices, or pivot — months of accumulated intelligence vanishes.

With Contextium, you own everything. Plain markdown in a git repo. Switch providers anytime. Your context comes with you.

The missing layer

Institutional memory
for individuals.

Companies have wikis, CRMs, and project management tools. Individuals have nothing.

Your career knowledge, health decisions, financial strategy, relationship context — it all lives in your head or scattered across 20 apps. Contextium gives you what organizations have had for decades.

People cards — relationships, preferences, history
Decision journal — what you chose, what you rejected, why
Health tracking — biomarkers, supplements, genetics
Goals & projects — tracked across quarters and years
Strategy
Claude
$$$
Research
Gemini
$
Bulk edits
Codex
$
Browser
Playwright
free
Cost-aware

The right AI for
the right job.

Why burn expensive tokens on web research? Route it to Gemini. Bulk file edits? Codex. Browser automation? Playwright.

Your primary AI stays focused on strategy and decisions. You get more leverage for less money. The system optimizes your AI spend automatically.

Accountability

Every decision.
Version-controlled.

Six months from now, you can git log any decision and see exactly what you chose, what you rejected, and why.

No more "why did I do it that way?" No more re-exploring dead ends. Your journal entries capture the reasoning. Git preserves it forever.

$ git log --oneline journal/
a3f2c1d Chose Windmill over n8n — better API
8b1e4a7 Rejected QSBS — timeline too tight
c7d9f2e Hired ops coordinator, not dispatcher
1e5a3b8 Switched to Mediterranean diet — APOE risk
f4c8d1a Chose Apache 2.0 over MIT — patent grant
# Every "why" preserved forever.
delegation-first enforced by hook
context-efficiency enforced by hook
session-discipline enforced by hook
credential-handling enforced by hook
Not suggestions

Rules that are actually enforced.

Most AI "frameworks" are just prompts. Contextium has actual enforcement — git hooks that catch drift before it happens.

Delegation thresholds. Context efficiency limits. Session discipline. Credential handling. Not documentation — infrastructure.

The flywheel

Every session builds
on the last.

Day 1

Your AI knows your name and what you do.

Day 30

It knows your goals, your team, your decisions, your patterns.

Day 365

It's the most informed collaborator you've ever had.

Journal entries capture decisions. Knowledge domains accumulate reference data. People cards deepen. Projects build history. The compounding never stops.

One command. You're in.

The installer handles everything — your name, your AI agent, your integrations. Five minutes from now, your AI has an operating system.

terminal
$ curl -sSL contextium.ai/install | bash
1

The installer asks

Your name, which AI agent you use, which services to connect. It sets up your personalized repo and installs the CLI.

2

Your AI opens

The installer launches your AI agent inside your new Contextium. It already knows your name and has the right instruction file configured.

3

It starts compounding

Every session from now on builds on the last. Decisions persist. Context accumulates. Day 30 is dramatically more powerful than day 1.

What's inside

A structured git repo with six layers that your AI navigates automatically.

CLAUDE.md

Context Router

The brain. Lazy-loads only the files relevant to the current session. No token bloat, no preloading.

apps/

6 App Protocols

Goals, health tracking, news digest, daily briefing, error remediation, shared utilities. Add your own.

integrations/

27 Connectors

Google Workspace, Todoist, Home Assistant, QuickBooks, Windmill, and 22 more. Configure only what you need.

knowledge/

Persistent Knowledge

People cards, health data, goals, finance — domain-organized reference data that grows richer over time.

preferences/

Rules & Enforcement

Behavioral rules, delegation policies, session discipline. Not just documented — actually enforced via hooks.

journal/

Session Compounding

Every session ends with a structured log. Next session, your AI knows what you decided and why. No repetition.

100% Open Source

Free forever. No catch.

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.

Apache 2.0 License Plain Markdown Git-Versioned No Telemetry

Battle-tested in production

This isn't a weekend project. Contextium was refined through months of daily production use before being open-sourced.

35+
App protocols
100+
Completed projects
600+
Journal entries
27
Live integrations

Stop starting from zero.

One command. Five minutes. Then every session compounds.

$ curl -sSL contextium.ai/install | bash

Apache 2.0 · Plain markdown · No lock-in