How to use CortexPlus

Getting started

Create your account and start saving memories on the web or your phone.

1. Create your account — the Free plan includes 5 GB in the cloud.
2. Install the app on iPhone or Android to record audio, take photos, and back up your camera roll.
3. Save anything you want: audio, photos, text, and videos. Everything is searchable by meaning in Memories.
4. Choose the modes that fit how you use CortexPlus and, if you like, connect local storage through the CortexPlus desktop app.

Usage modes

Each mode shapes how you interact with the same memories: it filters by type and tag, and adapts the app menu to what you need.

The selected mode is saved on this device, and the app menu changes to match.

• Home

  Your overview: highlights, summaries and activity.

  Available

• Photos

  A gallery organized by capture date, with phone backup.

  Available

• Files

  Keep attachments together, without uploading the same file twice.

  Available

• Nutrition

  Turn meal photos into calorie and nutrient estimates.

  Available

• Sales

  Notes, meeting audio and business cards become clients, deals and follow-ups.

  Available

• Study

  PDFs, notebook photos and lecture audio become summaries and flashcards.

  Available

• Finance

  Receipts, Pix screenshots and bills become categorized entries.

  Available

• Health

  Measurements, lab results and workouts in one place — private by default.

  Available

• Family

  Coming soon: share selected memories with family.

  Coming soon

Explore all modes

CortexPlus Cloud and local storages keep your originals. Each storage keeps a copy; the CortexPlus desktop app watches folders you choose for local storage.

Download (Beta)

Connect local storage

Install and open the CortexPlus desktop app. It displays a pairing code; enter that code in Settings → Storage. Local storage connects only when the whole library fits on the computer with 10% headroom.

Watched folders

Choose folders to watch. Native operating-system change notifications keep resource use low; idle watching uses no CPU. Deleting a file from a watched folder deletes that memory from your account and your other storages.

Inbox folder

Originals coming from the cloud are saved in the inbox folder, organized by capture year and month. It is watched like any other folder, so deleting there deletes the memory from your account. Copies are verified with SHA-256 before they are placed.

Online and offline

Local storage is shown as Online or Offline in Settings → Storage. With the computer off, the gallery and search keep working from thumbnails and vectors; the original shows as offline until the computer is back online.

File states

• Uploading

  The original is uploading to the cloud.

• In the cloud

  The original is in the cloud and counts toward the 5 GB limit.

• Copying to local storage

  The original is being copied to local storage. The app shows how many files and bytes remain at Settings → Storage.

• On local storage (verified)

  The original reached local storage and its SHA-256 was checked.

• Cloud space freed

  The original left the cloud; only the thumbnail and the index remain, and they don't count toward your quota.

With more than one storage, a file whose original has already left the cloud stays in the storages that have it and shows as “available on another storage” on the others.

1. Get your key

Your key is what lets an app reach your memory. It is like a password for one app: you can take it away at any moment without changing anything else.

1. Open API keys.
2. Create a key and give it a name you recognise, like "Claude" or "iPhone".
3. Copy it — it is shown only once. Keep it to yourself.

Lost it or shared it by accident? Delete it on that same screen and create another. The apps using the old key simply stop seeing your memory.

2. Connect Claude, ChatGPT or Gemini

Wherever an app asks you for an address, paste https://mcp.cortexplus.io. When it asks who you are, sign in or paste your key. That is the whole idea — pick your app below.

Claude

Works on the website, the computer app and the phone. You need a Pro or Max plan; on Team and Enterprise the owner adds it once for everybody.

1. Open Settings → Connectors.
2. Choose Add custom connector.
3. Paste https://mcp.cortexplus.io and save.
4. Press Connect and sign in. If you never set a password, choose Email me a key instead and paste the code you receive.
5. Back in the chat, ask: "what do I have about pricing?"

Screenshots for each plan are in Anthropic’s guide.

ChatGPT

On a personal plan, open the "ChatGPT on any plan" box below — it is the easier route and takes the same couple of minutes. The steps here need a Business, Enterprise or Edu workspace.

1. An administrator turns on developer mode in the workspace settings.
2. Open Apps → Create.
3. Paste https://mcp.cortexplus.io as the address.
4. For sign-in, choose OAuth and sign in to CortexPlus.
5. Press Scan Tools, then Create.

The settings live in different places per plan; OpenAI’s guide has the screens.

Gemini

Today Google requires a personal Google Account in the US, 18 or older, with Keep Activity on, and it has to be added on a computer — after that it also works on the phone.

1. On a computer, open gemini.google.com.
2. Go to Settings → Connected Apps (or Personal Intelligence → Connected Apps).
3. Under Custom apps, choose Add a custom app.
4. Paste https://mcp.cortexplus.io and press Next.
5. Sign in to CortexPlus. Never set a password? Choose Email me a key instead and paste the code from the email.
6. In the chat, type @ and pick CortexPlus.

Ignore the credential fields under Advanced features — CortexPlus fills those in by itself. Google’s guide has the screens.

Then just talk

"Remember that pricing is per indexed page" saves. "What did we decide about pricing?" brings it back, with the related notes around it. Your assistant asks before saving, never before reading.

Your key stays inside the app and is never shown to the AI itself. You can leave saving turned off and connect read-only, and removing the key in API keys disconnects every app that used it.

claude mcp add --transport http cortexplus https://mcp.cortexplus.io \
  --header "Authorization: Bearer cortex_..."

{
  "mcpServers": {
    "cortexplus": {
      "type": "http",
      "url": "https://mcp.cortexplus.io",
      "headers": { "Authorization": "Bearer cortex_..." }
    }
  }
}

{
  "mcpServers": {
    "cortexplus": {
      "httpUrl": "https://mcp.cortexplus.io",
      "headers": { "Authorization": "Bearer cortex_..." },
      "timeout": 30000
    }
  }
}

{
  "model": "gpt-5",
  "tools": [{
    "type": "mcp",
    "server_label": "cortexplus",
    "server_url": "https://mcp.cortexplus.io",
    "authorization": "cortex_...",
    "require_approval": "never"
  }],
  "input": "What did we decide about pricing?"
}

https://mcp.cortexplus.io
Authorization: Bearer cortex_...

3. Save memories by voice

Speak and CortexPlus works out what you meant. "Nota, cliente Bradesco tem 85% das aplicações em mainframe" becomes a note filed under that client. "Tarefa, criar o ambiente do piloto do BTG" becomes a task to do. And "já criei o ambiente do BTG" finds that task and ticks it off.

On the iPhone

1. On the iPhone, open /app/ios and create your key there.
2. Tap install. The Shortcuts app asks for the key while importing — paste it.
3. Tap the shortcut to record, or say "Hey Siri, Cortex Memory".

That is the whole setup. You can also share a voice message from WhatsApp or a recording from Voice Memos into it, instead of speaking live.

Nothing is ever thrown away for being unclear: when CortexPlus is not sure how to file something, it keeps it and flags it for review in Memories.

curl -sX POST https://api.cortexplus.io/v1/memories \
  -H "Authorization: Bearer cortex_..." \
  -H "content-type: application/json" \
  -d '{"text":"Nota, cliente Ambev tem como prioridade migrar o mainframe para Java","via":"ios-shortcut"}'

# request an upload URL
curl -sX POST https://api.cortexplus.io/v1/uploads \
  -H "Authorization: Bearer cortex_..." \
  -H "content-type: application/json" \
  -d '{"name":"recording.m4a","contentType":"audio/mp4"}'
# -> { "key": "...", "uploadUrl": "https://...", "expiresIn": 900 }

curl -sX PUT "$uploadUrl" -H "content-type: audio/mp4" --data-binary @recording.m4a

curl -sX POST https://api.cortexplus.io/v1/memories \
  -H "Authorization: Bearer cortex_..." \
  -H "content-type: application/json" \
  -d '{"key":"'"$key"'","contentType":"audio/mp4","name":"recording.m4a","durationSeconds":7,"via":"ios-shortcut"}'

{
  "id": "nd_...",
  "type": "task",
  "title": "Criar o ambiente do piloto",
  "client": "BTG",
  "status": "open",
  "memory": "ready",
  "review": null,
  "resolved": null,
  "url": "https://cortexplus.io/app/memories?node=nd_..."
}

4. Other apps and automations

Anything that can send a web request can save to CortexPlus and read from it — an iPhone shortcut, Zapier, Make, n8n, your own spreadsheet script. Your key is the only setting.

curl -sS https://api.cortexplus.io/v1/remember \
  -H 'authorization: Bearer cortex_...' \
  -H 'content-type: application/json' \
  -d '{
    "title": "Pricing review",
    "content": "We index pages, not gigabytes…",
    "tags": ["pricing", "product"]
  }'

curl -sS https://api.cortexplus.io/v1/recall \
  -H 'authorization: Bearer cortex_...' \
  -H 'content-type: application/json' \
  -d '{ "query": "what did we decide about pricing?", "maxChars": 6000 }'

# { "text": "…the passages that answer it…", "matches": 3 }