Three minutes from download to done.

M On a Mac

1. Download the installer.

   Download for Apple Silicon (M1/M2/M3/M4) →

   Download for Intel Mac →

   Not sure which Mac you have? Click the Apple menu → About This Mac. If the chip line says "Apple M1/M2/M3/M4," pick the Apple Silicon download. If it says "Intel," pick the other one. Pick wrong and the app won't launch -- harmless, just download the other.

2. Open the DMG. Double-click the file in your Downloads folder. A small window opens with the Mr. Mags icon and a shortcut to your Applications folder.
3. Drag Mr. Mags into Applications. Just like installing any other Mac app.
4. First launch: clear the one-time warning.

   Mac blocks unsigned apps the first time. For most Macs it’s one right-click:

   • In Applications, right-click Mr. Mags (or Control-click) → Open.
   • Click Open in the dialog. Done — double-click works forever after.
   On macOS 15 Sequoia, or right-click didn’t work? Two more ways

   Privacy & Security. Double-click Mr. Mags, click Done on the block, then open System Settings → Privacy & Security, scroll down, find “‘Mr. Mags’ was blocked,” and click Open Anyway (enter your password, then Open Anyway once more).

   Terminal — most reliable, every macOS version. Open Terminal (⌘ Space, type Terminal, Enter) and paste:

   xattr -d com.apple.quarantine "/Applications/Mr. Mags.app"

   Then double-click — it opens with no warning. (That just removes the download “quarantine” flag; the app is unchanged.)

5. Mr. Mags introduces himself — click Got it, and the window opens with a cheat sheet + memory browser.
6. If you use Claude Desktop: quit and reopen it.

   Mr. Mags exposes memory_save / memory_recall / memory_search tools to Claude Desktop via MCP. If Claude Desktop was running, quit it (⌘Q) and reopen so it picks up the new tools.

   Recall in Claude Desktop is rock-solid. For the most dependable capture across every AI, add the browser extension too — it catches facts automatically as you type.

Where the memory file lives: ~/Library/Application Support/Mr. Mags/brain/ No Mr. Mags account, no Mr. Mags cloud, no Mr. Mags telemetry. We don’t collect it because we don’t have a place to collect it to. Your conversations with Claude / ChatGPT / Gemini still go to those AIs like they always do — Mr. Mags is the memory layer, not a man-in-the-middle.

Next: install the browser extension → so auto-capture works across 13 AI sites — claude.ai, ChatGPT, Gemini, Perplexity, Copilot and more.

W On Windows

1. Download the installer.

   Download Mr-Mags-Setup.exe →

2. Run the installer. Double-click Mr-Mags-Setup.exe in your Downloads.
3. The SmartScreen warning — this is the part to read.

   Windows will pop up a blue window: "Microsoft Defender SmartScreen prevented an unrecognized app from starting."

   Click the small "More info" link. The window expands. Click the "Run anyway" button that appears.

   Why? No code-signing cert yet (~$300/yr, early access). SmartScreen flags installers it hasn't seen signed — "Run anyway" is the right button.

4. Step through the installer — "just me" is fine, accept the defaults, Install, Finish.
5. Mr. Mags introduces himself — click Got it, and the window opens with a cheat sheet + memory browser.
6. If you use Claude Desktop: quit and reopen it.

   Mr. Mags exposes memory_save / memory_recall / memory_search tools to Claude Desktop via MCP. If Claude Desktop was running, fully exit (right-click the Claude tray icon → Quit) and reopen so it picks up the new tools.

   Recall in Claude Desktop is rock-solid. For the most dependable capture across every AI, add the browser extension too — it catches facts automatically as you type.

Where the memory file lives: %APPDATA%\Mr. Mags\brain\ No Mr. Mags account, no Mr. Mags cloud, no Mr. Mags telemetry. We don’t collect it because we don’t have a place to collect it to. Your conversations with Claude / ChatGPT / Gemini still go to those AIs like they always do — Mr. Mags is the memory layer, not a man-in-the-middle.

Next: install the browser extension → so auto-capture works across 13 AI sites — claude.ai, ChatGPT, Gemini, Perplexity, Copilot and more.

Q Quick install (Windows)

Three sub-paths, same end state. All three end with the desktop app sitting in your system tray. Sub-paths B and C also set up the browser extension in one go.

Path A — Setup.exe default — visual installer

• Download Mr-Mags-Setup.exe →
• Double-click. On the SmartScreen warning, click More info → Run anyway.
• Step through the installer. Click Finish. Mr. Mags opens. Done.
• After this, install the browser extension separately (use the Browser extension only card up top) if you want auto-capture across the 13 supported AI sites (claude.ai, ChatGPT, Gemini, Perplexity, Copilot, and more).

Path B — PowerShell one-liner faster, if you're comfortable

• Open PowerShell. (Search "PowerShell" in the Start menu, or on Windows 11 right-click Start → Terminal.)
• Paste this line and press Enter:

irm https://cdn.mrmags.org/install.ps1 | iex

• About 60 seconds. Installs the desktop app silently (no admin needed), extracts the browser extension to a known path, and opens Chrome to the extensions page with the path already on your clipboard — paste into Load unpacked, click Select Folder, done.
• Want to read it before you run it? View install.ps1. Plain-text PowerShell, ~9 KB. Same script Path C downloads at runtime. No hidden installer.

Path C — Mr-Mags-Quick-Install.cmd back-compat — one file double-click

• Download Mr-Mags-Quick-Install.cmd →
• Right-click the .cmd → Properties → check Unblock → OK. Then double-click. Click More info → Run anyway on the SmartScreen warning. The same 60-second installer from Path B runs.
• The .cmd is a 1.2 KB wrapper that fetches the same install.ps1 from the CDN and runs it — identical end result to Path B. If your machine has Defender ASR's "Block obfuscated scripts" rule enabled, it may still refuse the .cmd; if Path C fails with "Access is denied," use Path A or Path B.

B Browser extension

Auto-capture across 13 AI sites — claude.ai, ChatGPT, Gemini, Perplexity, Copilot, Grok, DeepSeek, Mistral, Meta AI, Google AI Studio, Poe, T3 Chat, Qwen — plus any custom server. Type a save-worthy fact, hit Enter, and it's saved to your local brain before the AI sees it.

First: the Mr. Mags desktop app must be installed and running — the extension talks to your local brain at 127.0.0.1:11436.

1. Download & unzip — mrmags-extension.zip →, unzip it anywhere you'll remember.
2. Open chrome://extensions (Edge: edge://extensions; Brave: same as Chrome).
3. Flip on Developer mode — the toggle, top-right.
4. Click "Load unpacked" and pick the unzipped folder (the one with manifest.json in it).
5. Pin it — puzzle-piece icon, top-right → pin Mr. Mags to your toolbar.

Test it: open claude.ai, watch for the Mr. Mags pill bottom-right (green dot = connected to your brain), and type "My student Sam has a 504 accommodation for extended time on tests." Hit Enter — a "Memory saved" toast confirms the save.