Everything you know, in one place

Obsidian Plugin

Everything you have already written in Obsidian becomes something your AI can use. Connect the whole vault or just the notes you tag, and it stays current as you write. There is a sidebar for searching without leaving the app.

1. Install "Second Brain Sync" from Obsidian's community plugins
2. Add your Worker URL and token in the plugin settings
3. Choose the whole vault, or just notes tagged something like #brain

The pages you already keep in Notion, without copying them anywhere new or maintaining a second version of them. Connect it once and what you write there is readable by every AI tool you use.

1. Create an internal integration at notion.so/my-integrations and copy its token
2. In Notion, share the pages or databases you want with that integration
3. Open Integrations in your dashboard, pick Notion, and paste the token

What you did and when you did it, so "back in March" turns into an actual week you can ask about. Paste the private link your calendar already publishes and it keeps itself current.

1. Google: Settings → your calendar → Integrate calendar → copy the secret address in iCal format
2. Outlook: Settings → Calendar → Shared calendars → Publish → copy the ICS link. iCloud: share the calendar and copy its link
3. Open Integrations in your dashboard, pick your calendar, and paste the link

Second Brain only ever reads the calendar, and nothing is written back. Treat that link like a password: anyone holding it can read the calendar, so reset it on your provider if you ever disconnect.

The threads where you actually said the thing. It skips the newsletters and the promos, and keeps the parts you'd actually want your AI to know.

1. Create an app password (Gmail: your Google account. iCloud: your Apple account)
2. Open Integrations in your dashboard and pick Gmail or iCloud Mail
3. Enter your address and that app password

Mail is read, never sent and never changed. Quoted reply chains and signatures are stripped before anything is saved, and what is kept is stored as plain text rather than summarised, so nothing gets paraphrased on the way in.

Browser Extension

Highlight anything on a page, right-click, and it's saved. Articles, docs, posts, whatever you're reading - kept the moment you find it, without leaving the tab.

1. Install the extension from the GitHub releases page
2. Paste your Worker URL and token into the popup settings
3. Highlight any text → right-click → "Save to Second Brain"

iOS Shortcuts

For the thoughts that turn up away from your desk. Talk it out on a walk, type a quick note, or share straight from any app - it's in there before you've put your phone away.

1. Download the Brain Dump or Text Dump shortcut template
2. Drop in your Worker URL and token when prompted on first run
3. Add it to your Share Sheet or Action Button so it is one tap

Save and search from the terminal. Pipe in meeting notes, command output, or anything else you would otherwise copy and paste somewhere.

Works with Claude, Cursor, Windsurf, Claude Code and anything else that supports MCP. One address to paste in, and they all read from and add to the same place.

1. Copy your Worker's MCP endpoint URL from the dashboard
2. Add it as a custom MCP server in your client of choice
3. From then on it looks things up and saves them mid-conversation on its own

Talk to it directly over HTTP. Build your own integrations, automations or scripts on the same endpoints everything else here runs on.

1. Grab your Worker URL and auth token from the dashboard
2. POST to /remember and GET from /recall with a bearer token
3. Script it, schedule it, or wire it into any webhook you already run