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The Margin

Official registry AI and agents

Notes, boards, habits, money and family life in one place your AI can read and act on.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http the-margin 'https://mcp.themarginapp.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "the-margin": {
            "type": "http",
            "url": "https://mcp.themarginapp.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. The Margin
  2. What it is
  3. Connect your AI
  4. Report a problem or ask for something
  5. What is in this repository

The Margin

One place for work, home and your own plans, that works offline and that your AI can use.

Website · Try it, no account · Docs · Changelog · Discussions

What it is

The Margin keeps boards, notes, checklists, habits, money, meals, chores and chat in one app. A household or a team shares what it wants to share, and each person keeps a private side.

  • It works with no signal. A full copy of your data lives on the device and catches up when it is back online.
  • It has an assistant built in. Margin Intelligence can read across everything you keep there and act on it.
  • It works with the assistant you already use. Claude, ChatGPT, Grok, Cursor and any other MCP client can connect to your workspace, and each thing they add is marked with who added it.
  • Your data is yours. Export all of it whenever you like.

It runs in the browser and installs to a phone's home screen. Native apps for iPhone and Android are coming soon.

Connect your AI

The server is at https://mcp.themarginapp.com/mcp and speaks MCP over Streamable HTTP. Sign-in is OAuth 2.1, so most clients only need the URL.

ClientHow
ClaudeSettings → Connectors → Add custom connector, paste the URL
ChatGPTSettings → Apps & Connectors → Create, paste the URL
GrokSettings → Connectors → Add custom, paste the URL
Claude Codeclaude mcp add --transport http margin https://mcp.themarginapp.com/mcp
Cursor and other JSON-config clientsSee connector/examples

Menu names move around between releases of each client. If one of these is out of date, tell us.

Try it without an account

Point a client at https://mcp.themarginapp.com/sandbox/mcp with no credential. The server makes a demo household for that connection and deletes it about an hour after your last call.

claude mcp add --transport http margin-sandbox https://mcp.themarginapp.com/sandbox/mcp
What an assistant can do

271 tools. 112 only read, 82 add or change, 77 can remove or overwrite. Every one is scoped to the person who signed in and the workspaces they chose.

The full list is in connector/TOOLS.md, with input schemas in connector/tools.json. The guide is at themarginapp.com/docs/agents-and-mcp.

Report a problem or ask for something

What is in this repository

PathWhat
server.jsonThe MCP Registry entry
connector/The tool catalog, client configs and example prompts
ROADMAP.mdWhat we are working on next
Issues and DiscussionsWhere bugs, requests and questions go

The Margin's application code is not open source and is not in this repository. The files here are MIT licensed so you can copy the configs and examples freely.

Made by Meliura Ltd

Frequently asked questions

What is The Margin?

Notes, boards, habits, money and family life in one place your AI can read and act on.

How do I install The Margin?

It runs as a remote server. In Claude Code: claude mcp add --transport http the-margin 'https://mcp.themarginapp.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does The Margin need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is The Margin open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains The Margin?

It is published by themarginapp. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.