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Day One

Verified Integration
Author: @Quevin•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Python#Git#AI#GitHub#Node.js

Client Configuration

— Connect Day One to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "day-one": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-day-one"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Integrates Day One Journal with Claude Desktop, enabling natural language control over journaling.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Day One

You can create new journal entries with rich content, attachments, and metadata, read recent entries, search your journal by text, and retrieve historical 'On This Day' entries from past years. You can also list journals and get entry counts.

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