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PopNx MCPMCP servers for people who use AI · explained in plain words

Squirrel Brain

by squirrelbrainapp.comversion 1.0.0i★ –iRuns in the cloud
Registry namecom.squirrelbrainapp/squirrel-brain

Install

Overview

Description from the maker (original English)

Give your AI agent a memory and body on your iPhone: set alarms, ring your phone, over MCP.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Chat & email
  • You need to fill in: X-API-Key, Authorization, apikey

Install

Pick the AI app you use, then copy the settings.

Before you install

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http squirrel-brain https://geczbtsjfbvfukdzdemr.supabase.co/functions/v1/mcp-server --header 'X-API-Key: your-value' --header 'Authorization: your-value' --header 'apikey: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "squirrel-brain": {
      "url": "https://geczbtsjfbvfukdzdemr.supabase.co/functions/v1/mcp-server",
      "headers": {
        "X-API-Key": "your-value",
        "Authorization": "your-value",
        "apikey": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "squirrel-brain": {
      "type": "http",
      "url": "https://geczbtsjfbvfukdzdemr.supabase.co/functions/v1/mcp-server",
      "headers": {
        "X-API-Key": "your-value",
        "Authorization": "your-value",
        "apikey": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • X-API-Key secret required HTTP header
    Your personal Squirrel Brain key from the iOS app (Settings -> API keys; starts with sb_)
  • Authorization required HTTP header
  • apikey required HTTP header

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

All apps, with pros and cons →

Related guides

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 11, 2026

  • ! Caution

    Maker matches the repo

    The registry lists no source repo, so we cannot match the publisher (squirrelbrainapp.com) to the code

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 149 ms (HTTP 401)

  • ! Caution

    Sign-in with OAuth

    Needs a key or token that you copy and paste yourself

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

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Posts here are written by users, not the PopNx team.

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User reviews

No reviews yet

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Compared with others in Chat & emaili

  • More stars than 0% of the other 1937 servers in this category
  • Published to the registry more recently than 14% of the other 1937 servers in this category
  • Basic checks equal to or better than 8% of the other 1937 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Squirrel Brain safe?

It passed 1 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: X-API-Key, Authorization, apikey

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 4 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.

What can I use instead?

In the same category: Inbox Zero, Agent-Native Chat, draw.io

Alternatives

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draw.io

Create draw.io diagrams in chat from Mermaid or XML, shown live and interactive. 10,000+ shapes.

by jgraphWidely used★ 5.8KUpdated today

Runs in the cloud✓ draw.io

README from the maker

No README found in the repo