notion2ical-cli

A command-line tool that converts a Notion calendar database into iCalendar (.ics) format.

Features

• Export Notion calendar databases to iCalendar format
• Supports incremental updates for efficient syncing
• Customizable event mapping and error handling
• Written in TypeScript, ESM-first

Installation

npm install -g notion2ical-cli

Or use it directly with npx:

npx notion2ical-cli --help

Usage

notion2ical-cli \
  --auth <token> \
  --database-id <id> \
  --title-property-name <name> \
  --date-property-name <name>

Options

• -a, --auth <token>: (Required) Notion integration token (or set NOTION_AUTH_TOKEN in env)
• -d, --database-id <id>: (Required) Notion database ID (or set NOTION_DATABASE_ID in env)
• -t, --title-property-name <name>: (Required) Name of the property containing the event title (or set NOTION_TITLE_PROPERTY_NAME in env)
• -e, --date-property-name <name>: (Required) Name of the property containing the event start/end date (or set NOTION_DATE_PROPERTY_NAME in env)
• -s, --desc-property-name <name>: (Optional) Name of the property containing the event description (or set NOTION_DESC_PROPERTY_NAME in env)
• -f, --fallback-duration <min>: (Optional) Default duration for events without an end, in minutes (must be a positive integer, default: 60)
• -i, --ignore-missing-dates: (Optional) Ignore events with no date set (default: false)
• --calendar-name <name>: (Optional) Name of the calendar to create (default: Notion Calendar)
• --from-date <date>: (Optional) Include events starting on or after this date (inclusive). Accepts YYYY-MM-DD, YYYY/MM/DD, YYYY.MM.DD, or full ISO 8601 (e.g., 2025-06-28T14:30:00Z)
• --until-date <date>: (Optional) Include events starting on or before this date (inclusive). Accepts YYYY-MM-DD, YYYY/MM/DD, YYYY.MM.DD, or full ISO 8601 (e.g., 2025-06-28T14:30:00Z)
• --incremental: (Optional) Enable incremental sync (enables --cache-dir and --cache-max-age options, default: false)
• --cache-dir <path>: (Optional) Directory to store cached sync state (requires --incremental, default: system cache folder; will be created if it does not exist)
• --cache-max-age <sec>: (Optional) Perform a full resync if the cache is older than this many seconds (requires --incremental, a non-negative integer in seconds or 0 to disable, default: 0)
• -v, --verbose: (Optional) Enable verbose logging (can be used multiple times for more verbosity)
• -o, --output <file>: (Optional) Write the generated .ics to a file instead of stdout

Warning: Incremental mode does not detect deleted events/pages in Notion. If you delete an event in Notion, it will remain in the generated .ics file until you perform a full (non-incremental) sync or manually clear the cache directory. The --cache-max-age option can be used to force a full resync after a specified period, which will remove deleted events from the output. Use incremental mode for performance, but be aware of this limitation.

Example

notion2ical-cli \
  --auth secret_xxx \
  --database-id 1234567890abcdef \
  --title-property-name Name \
  --date-property-name Date

Environment Variables

You can set some options via environment variables instead of command-line flags:

• NOTION_AUTH_TOKEN: Notion integration token
• NOTION_DATABASE_ID: Notion database ID
• NOTION_TITLE_PROPERTY_NAME: Name of the title property
• NOTION_DATE_PROPERTY_NAME: Name of the date property
• NOTION_DESC_PROPERTY_NAME: Name of the description property

Output & Logging

• The generated .ics file is written to stdout.
• All logging and informational messages are sent to stderr.

License

MIT

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See also:

• notion2ical (library)