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Project 04 · Open beta

Margin

Anchored discussions for generated documents. Comments stay with the writing across revisions, and the agent producing the next version gets the review context it needs.

Install the Chrome extension

Download Margin v0.11.3 beta
  1. Download and unzip the current Margin beta build.
  2. Open chrome://extensions and turn on Developer mode.
  3. Choose Load unpacked and select the unzipped chrome-mv3 folder.
  4. Open chrome://extensions/shortcuts and confirm Toggle Margin annotation mode is assigned Alt+Shift+A.
  5. Pin Margin, open a supported document, then click the Margin toolbar icon.

Install Margin Write

Margin Write creates and revises reviewable documents with stable anchors and verified authorship.

npx skills add gerrymi/margin-skills --skill margin-write

Update an existing installation with:

npx skills update margin-write

Connect your AI client

Add Margin as a Streamable HTTP MCP server, then complete Google sign-in. No API key or client secret is required.

https://margin.supabase.co/functions/v1/margin-mcp/mcp

Desktop app or IDE extension

  1. Open Settings → MCP servers and choose Add server.
  2. Name it Margin, choose Streamable HTTP, and paste the endpoint below.
  3. Save, restart the client, then choose Authenticate.

CLI

codex mcp add margin --url https://margin.supabase.co/functions/v1/margin-mcp/mcpcodex mcp login margin

Run codex mcp list or type /mcp to verify the connection.

Official Codex MCP guide