Or: teach Contextium once. Every AI tool you use loads your context automatically — and your work, personal, and side-project worlds each stay their own workspace, under one login. Free for individuals.
Free plan · No credit card · Set up in minutes
Your day job, your side project, and your personal life don't belong in one context soup. Keep each world its own workspace — no other tool does this cleanly.
The codebase, the conventions, the deploy gotchas. Loads when you’re working — and only then.
A separate brain for the thing you build at midnight. Its context never bleeds into the day job.
Notes, plans, and life admin — in a workspace your work tools never see.
Full single-player Contextium. The only wall is a second seat.
Separate worlds for work, personal, and every side project — all under one login.
Claude Code, Cursor, Copilot, Gemini and any MCP-compatible tool — hosted endpoint, local server, or CLI.
Workflows and phases your AI reads and updates — resume any project from any tool.
Generous limits, relevance-based loading that keeps token usage low, and no usage-based surprise bills.
And when a teammate needs your context — invite them. That's the whole upgrade.
Yes. The free plan is full single-player Contextium — the capabilities of the paid product for one user, with generous limits. Collaboration (a second seat) is where paid plans begin. Individuals are not a revenue segment for us; teams are.
You keep separate workspaces for separate worlds — work, personal, side project — each with its own context, under one login. Your AI tools load the right world for the task at hand instead of mixing everything together.
Any MCP-compatible tool: Claude (Desktop and Code), Cursor, Copilot, Gemini, Windsurf, Cline and more — via the hosted remote MCP endpoint, a local MCP server, or the npm CLI.
Invite them to a workspace and they connect their own tools — your shared context is immediately theirs too. That moment is exactly what Contextium is built for; upgrading adds seats, nothing else changes.
Free for individuals. Every tool briefed, every world separate.