brain² connects your mail, calendar, GitHub, and notes into a single local vault — powered by your existing Claude or Codex subscription. One place to think, track, and close loops. Stop switching tabs.
Wake up. Your daily note is ready — with yesterday's unfinished loops, today's calendar, and what your mail is asking for. In markdown. On disk.
Your notes live as plain markdown in an Obsidian vault you own. brain² reads, writes, and remembers. Switch machines without losing anything.
Bring your own subscription. We bolt it into the right shape for notebook work — context, tools, memory, and a UI that isn't chat.
Every tool you already pay for, piped into the daily note automatically. The agent reads them so you don't have to open seven tabs.
Tasks surface from your notes, your mail, your calendar. Check them off here, and the markdown updates. One inbox to rule them all.
Everything runs locally against your vault. Open source harness, nothing proprietary in the middle. Ship your own instance to a VPS in one click.
Cass trades equities part-time. brain² watches her positions, pulls earnings transcripts, and tracks sentiment from the analysts she actually trusts.
Every 30 minutes during market hours it pings her with context, not headlines — "NVDA −2.1%. Guidance miss. Your note from Mar 4 said cut if guidance softened."
Screenshot a chart into the vault and it gets tagged to the ticker. Her daily note is a Bloomberg terminal she trained on herself.
Arjun is six months from defending. brain² watches the arXiv categories he cares about and cross-references new papers against his existing notes.
It surfaces the three that actually connect to what he's writing — drafts citation blocks, tracks which thread in his thesis has gone quiet for a week, parses email from his advisor into action items.
The vault becomes a lab notebook — except it's reading the literature alongside him.
Maya runs a 4-person startup. brain² pulls overnight Linear issues, unanswered investor emails, customer Slack threads, and yesterday's metrics into one morning page.
It drafts the reply to the lead in her voice. It flags the customer ticket that's gone two days without a response. It writes the standup.
She doesn't open Linear, Slack, or Gmail until 3pm — and when she does, she's already caught up.
Give brain² the path to your Obsidian vault. It reads the markdown, nothing else.
Claude Code, Codex, or both. Use the one you already pay for. We don't charge per token.
Gmail, Calendar, GitHub, Slack, Linear, Notion. Each connector is one OAuth click.
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