Asked and answered.

Cortex is an external brain: one place where everything you capture — notes, documents, voice memos, prompts, quotes, links — becomes searchable memory. Its superpower is MCP: every AI you use (Claude, ChatGPT, Cursor, and any other MCP client) can search that memory and save into it, so your context stops living in scattered chats.

One unit of memory. A neuron can be a note, an uploaded document, a reusable prompt, a quote, or an embedded link. Neurons carry tags, an optional project, a visibility level (private, team, or public link), and they are all semantically searchable.

The Connect AI page generates a per-client setup: a ready-made config snippet for Claude Desktop, Claude Code, and Cursor, and a one-click OAuth connector for ChatGPT. Each connection is its own revocable key, and the History page logs every action any AI takes in your brain.

The chip at the bottom of the sidebar that decides where new captures land: your personal brain, a team, or a project. The Brain list and your connected AIs follow it — switch scope once when you change context and everything routes correctly.

No. Creating a team requires the Team plan (€49/mo with 5 seats included, extra seats €7/mo), but joining and working inside someone else’s team is free on any plan — team content never counts against a member’s personal limits.

Pick Pro or Team and save your card through a €0 checkout — nothing is charged that day. You get the full plan for 7 days. Unless you cancel before day 7, the subscription starts automatically on the saved card; we email you two days before the first charge. Cancelling during the trial is free and instant.

Your paid plan stays active until the end of the period you already paid for — then you move to the lower plan or Free. Nothing is deleted, ever: if you hold more neurons than Free allows, they all stay readable, searchable, and editable; only creating new ones pauses until you upgrade again.

Upgrades are prorated. You switch immediately and pay only the price difference for the remaining days of your current cycle — the renewal date does not move. Downgrades cost nothing today and take effect at the period end.

Yes — every charge produces an invoice, emailed automatically and already marked as paid. Add your company details and VAT number under Settings → Billing → Invoice details to have them appear on future invoices.

The monthly budget that powers Cortex’s own AI work on your content: embeddings for search, vision analysis on images, audio transcription. It resets every month per your plan. You can also bring your own OpenRouter API key so heavy processing bills your key instead.

Always. Git sync (Pro and Team) mirrors your entire brain to your own GitHub repository as Markdown with attachments, committing on every change — a standing export you own even if you leave. Public sharing and team access are always explicit choices.

No. Your content is processed only to serve you — indexing, search, analysis you asked for. AI assistants only see what the connection’s scope and your team memberships allow, and the History page shows every access.

Card payments through Revolut’s payment platform — we never see or store card details. Subscriptions are monthly in euros, VAT included where applicable.

The wiki explains every feature in more depth, the Security page covers infrastructure and encryption, and hello@getcortex.org reaches a human.