OzBrain

OzBrain is a hosted knowledge base that acts as a shared brain every AI agent you use can read and write. Rather than letting each platform build its own separate, partial memory, OzBrain gives Claude, ChatGPT, Claude Code, Cursor, Gemini Spark and other connected clients one structured source of truth that agents and teammates both read from and write to. It is a place to hold your projects, decisions, research and the thinking you have already done, so a new chat can begin with what the task actually needs. It is aimed at founders, small teams and individuals whose work increasingly happens inside AI agents, and who want one brain instead of a scattered pile of chats, documents and stale file copies. The problem OzBrain addresses is fragmentation. Today the context of your work lives in your chats, your teammate's context lives in theirs, and the two never meet, so you share a doc, drop a message, and paste the same things over and over again. Meanwhile copies of the same plan sit in Drive, on laptops, in Downloads and in email, and no one is sure which one is current. Platform memory does not solve this: it keeps scraps and summaries, a few preferences and a thin summary of past chats, not the work itself. OzBrain is positioned as the layer underneath the tools you already use, holding the projects, decisions, research and prior thinking that platform memory cannot hold. The first core capability is structure. OzBrain breaks your knowledge into nested pieces, so an agent pulls the exact slice it needs rather than loading everything. The site illustrates this with a launch plan that nests into launch campaigns, which in turn nests into a single launch email: the agent can retrieve the 218-token, 0.87 KB email instead of the 11,842-token, 47.3 KB plan. Because the agent has less to load, it answers faster and more cheaply, and it is less likely to invent an answer out of context it never needed. In practice this means an agent can go straight to the email body it has to write without dragging the whole launch plan, the campaigns and the surrounding research into the conversation. The second capability is freshness. When newer thinking lands, OzBrain goes back through your knowledge on its own, marks the old material as replaced, and points to the latest version. You never have to hunt down every place an old decision lived, and no agent answers from a version you have already moved past. The site shows a company-details article being updated with a new domain, and the website-launch-plan article being updated to record that a new website URL was set and that the old domain is forwarded. Alongside this, OzBrain keeps every change on the record: which agent made it, what changed, and the reasoning behind it. Changes are proposed before they land, so several agents can work at once without writing over each other, and you can always see how the brain got to where it is. A recent-changes table on the site lists the time, the agent, the article and the reason for each edit. The third capability area is privacy and portability. Your brain is encrypted at rest and sealed to your account, so nothing leaks between tenants. OzBrain states that it never trains on your data and never sells it, describing the brain as a sovereign place for your data. On top of that, you can export everything as markdown whenever you want, including after you cancel, and deleting your account removes your content. The company frames this as a deliberate position: your knowledge is yours, you should be free to use the best tools for it, and OzBrain would rather earn your stay than lock you in. OzBrain works as a brain you connect rather than a service you code against. It is explicitly not another memory API: memory APIs sell add and search endpoints to developers building apps, while OzBrain is a hosted brain behind the connector menu that Claude and ChatGPT already show you. There is nothing to install and no coding required: you add OzBrain from the connector menu in Claude or ChatGPT, sign in, and approve it. The knowledge itself is stored as structured articles with links, provenance and freshness. Every write is staged, routed and checked against what the brain already holds, which is what separates it from a notes app: notes are written by you for you, while a brain is written by your agents for your agents. The site also describes it as one URL, so anything that speaks the protocol can hold the same brain. The benefits described follow from that approach. Agents pull only what they need, so they make fewer mistakes and answer faster and more cheaply. Your new and better ideas replace old notes automatically, so you stop chasing outdated versions scattered across drives, downloads, chats and email. Because every change is recorded with its reasoning and proposed before it lands, multiple agents can work simultaneously without overwriting each other, and you can audit how the brain arrived at its current state. Your data stays encrypted and private, and you retain the ability to take it with you as plain markdown at any time. Concrete scenarios in the content include teams where every member's agents work on the same knowledge: point everyone at one OzBrain, and what one person works out is already available to everyone's agents. A launch workflow shows an agent retrieving just the launch email slice instead of the full plan. A domain migration shows an update to company details propagating so agents no longer answer from an outdated domain. A solo founder's export shows seven brains and 503 articles being exported as markdown, and an enterprise scenario shows org-owned shared brains that every seat's agents share. OzBrain connects to Claude and ChatGPT through their native connector flows, plus Claude Code, Cursor, OpenClaw, Hermes Agent and Gemini Spark where Google makes it available (US, Spark eligibility), and any client that supports connectors. Pricing starts free: the Free plan is $0 forever with up to 50 articles, sharing on brains you own, unlimited brains, reads, writes and connections, write-time size discipline, and markdown export anytime. Pro is $20 per month with up to 500 articles for one venture plus personal knowledge, and Max is $99 per month with up to 5,000 articles for when agents run the operation from one brain. Both paid tiers include unlimited brains, reads, writes and connections plus markdown export anytime. Enterprise adds org-owned shared brains above the Max ceiling with per-seat pricing designed with you. The site also publishes comparisons against Mem0 and Supermemory, ChatGPT Memory, Claude Projects, ChatGPT Projects, Notion and Obsidian. The takeaway is straightforward: OzBrain is the shared, structured, portable knowledge layer beneath every AI agent you use, so your agents and your teammates stop working from separate partial memories and start working from one current, auditable source of truth that you can export and leave with whenever you choose.