About
Time makes more sense at the scale of a year.
Twelve Month Calendar is a focused visual calendar for people who need perspective before detail. It turns an entire year into one calm surface, then lets a person—or an agent they authorize—move closer only when exact dates matter.
Why this exists
Most calendars are excellent at the next hour and awkward at the next twelve months. A family deciding when to travel, a team spacing major work, or a person protecting time off needs to see clusters, gaps, seasons, and overlaps before reading individual event names.
The annual view therefore uses one compact cell per day. Color, pattern, and small symbols carry the overview; immediate hover and keyboard details preserve precision without filling the grid with labels.
Principles
The product stays intentionally narrow: private calendar data, unlimited user-defined categories, flexible people and tags, saved perspectives, and large-screen display profiles. It does not require Google Calendar and it does not publish personal events for indexing.
The web app, REST API, OpenAPI contract, and MCP tools share one typed procedure model. That keeps human and agent behavior aligned, including permissions, validation, conflict handling, and mutation safety.