Alto Index
Docs Alto Index extension for Claude Desktop

Claude Desktop extension

Connect Claude to your Apple Notes, Mail, Calendar, Reminders, and Messages through Alto Index.

Download

Download the extension package: altoindex-extension.mcpb

Installation

  1. Download the extension file above
  2. Open Claude Desktop Settings > Extensions
  3. Click “Install Extension” and select the downloaded file
  4. Alto Index tools will be available automatically

Prerequisites

  • Alto Index installed and running on macOS
  • the MCP server started inside the app (Integrations tab, press start)
  • Claude Desktop

Usage examples

Find meeting notes

Ask Claude: “Search my notes for anything about the Q4 planning meeting”

Check recent activity

Ask Claude: “What have I been working on in the last few days?”

Read a specific note

Ask Claude: “Read my note called Project Ideas”

Available tools

  • list: List items from notes, reminders, messages, or events
  • search: Search for content within a specific source
  • read: Read the full content of a specific item
  • get_metadata: Get counts and last sync times for each source
  • get_recent: Get recently modified items across all sources
  • get_stats: Get counts and totals for each source

All tools are read-only and do not modify your data.

Troubleshooting

Cannot connect to Alto Index:

  • Make sure the Alto Index app is running
  • Check that the MCP server is started (green indicator in the Integrations tab)
  • Verify port 8743 is not blocked

No data returned:

  • Ensure you’ve synced your data sources in Alto Index
  • Check that the export folder is configured in Alto Index settings