Temporal-first calendar engine

Build calendars without timezone bugs.

Headless month, week, and day views with explicit timezone, range, and projection contracts.

Read the docs

The prompt points your coding agent to Calendar's llms.txt and installable Agent Skill.

Basic monthA navigable month whose event type is inferred from values.

July 2026

Sun
Mon
Tue
Wed
Thu
Fri
Sat
28
29
30
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1

Calendar contracts that stay explicit

Timezone explicit

Today, visible ranges, and item projection share one timezone.

Boundary safe

Half-open ranges prevent duplicated events between views.

Data independent

Each projection keeps its own item type and query lifecycle.

Learn from compiling examples

For humans who need the why. For agents that need the exact contract.

Human quick startRender your first monthInstall, configure views, add items, and navigate a real calendar.ArchitectureFetch below SuspenseKeep controls interactive while each view owns its query and item type.Agent contextGive your agent the contractCanonical examples, public types, range semantics, and decision rules in one file.